Fix stack overflow due to large AF_INET6 requests

Resolves #16072 (CVE-2013-4458). This patch fixes another stack overflow in getaddrinfo when it is called with AF_INET6. The AF_UNSPEC case was fixed as CVE-2013-1914, but the AF_INET6 case went undetected back then. (cherry picked from commit 7cbcdb3699) Conflicts: NEWS
Fix incorrect getaddrinfo assertion trigger
2026-09-09 11:58:23 +08:00 · 2013-10-25 23:59:00 +10:00 · 2013-10-25 23:58:29 +10:00 · 2013-10-25 23:56:45 +10:00 · 2013-10-25 23:56:33 +10:00 · 2013-10-25 23:55:07 +10:00
1257 changed files with 133568 additions and 62900 deletions
@@ -133,6 +133,21 @@ will be used, and CFLAGS sets optimization options for the compiler.
     library.  This option hardcodes the newly built C library path in
     dynamic tests so that they can be invoked directly.

+`--enable-lock-elision=yes'
+     Enable lock elision for pthread mutexes by default.
+
+`--enable-pt_chown'
+     The file `pt_chown' is a helper binary for `grantpt' (*note
+     Pseudo-Terminals: Allocation.) that is installed setuid root to
+     fix up pseudo-terminal ownership.  It is not built by default
+     because systems using the Linux kernel are commonly built with the
+     `devpts' filesystem enabled and mounted at `/dev/pts', which
+     manages pseudo-terminal ownership automatically.  By using
+     `--enable-pt_chown', you may build `pt_chown' and install it
+     setuid and owned by `root'.  The use of `pt_chown' introduces
+     additional security risks to the system and you should enable it
+     only if you understand and accept those risks.
+
 `--build=BUILD-SYSTEM'
 `--host=HOST-SYSTEM'
     These options are for cross-compiling.  If you specify both
@@ -315,9 +330,9 @@ build the GNU C Library:
     recommend GNU `make' version 3.79.  All earlier versions have
     severe bugs or lack features.

-   * GCC 4.3 or newer, GCC 4.6 recommended
+   * GCC 4.4 or newer, GCC 4.6 recommended

-     GCC 4.3 or higher is required; as of this writing, GCC 4.6 is the
+     GCC 4.4 or higher is required; as of this writing, GCC 4.6 is the
     compiler we advise to use to build the GNU C Library.

     You can use whatever compiler you like to compile programs that use
@@ -340,10 +355,11 @@ build the GNU C Library:
     installation mechanism for the info files is not present or works
     differently.

-   * GNU `awk' 3.0, or higher
+   * GNU `awk' 3.1.2, or higher

-     `Awk' is used in several places to generate files.  `gawk' 3.0 is
-     known to work.
+     `awk' is used in several places to generate files.  Some `gawk'
+     extensions are used, including the `asorti' function, which was
+     introduced in version 3.1.2 of `gawk'.

   * Perl 5

@@ -127,6 +127,9 @@ lib: $(common-objpfx)libc.so

 lib: $(common-objpfx)linkobj/libc.so

+# Do not filter ld.so out of libc.so link.
+$(common-objpfx)linkobj/libc.so: link-libc-deps = # empty
+
 $(common-objpfx)linkobj/libc.so: $(elfobjdir)/soinit.os \
 				 $(common-objpfx)linkobj/libc_pic.a \
 				 $(elfobjdir)/sofini.os \
@@ -217,14 +217,9 @@ endif
 # later directory would be chosen over a .c file in an earlier directory,
 # which does not preserve the desired sysdeps ordering behavior.

-# System-dependent makefiles can put in `inhibit-sysdep-asm' wildcard
-# patterns matching sysdep directories whose assembly source files should
-# be suppressed.
-ifdef inhibit-sysdep-asm
-define check-inhibit-asm
-case $$sysdir in $(subst $(empty) ,|,$(inhibit-sysdep-asm))) asm= ;; esac;
-endef
-endif
+# System-dependent makefiles can put in `inhibit-sysdep-asm' regexps
+# matching sysdep directories whose assembly source files should be
+# suppressed.

 -include $(common-objpfx)sysd-rules
 ifneq ($(sysd-rules-sysdirs),$(config-sysdirs))
@@ -233,34 +228,16 @@ ifneq ($(sysd-rules-sysdirs),$(config-sysdirs))
 sysd-rules-force = FORCE
 FORCE:
 endif
-$(common-objpfx)sysd-rules: $(common-objpfx)config.make $(..)Makerules \
+$(common-objpfx)sysd-rules: $(..)scripts/sysd-rules.awk \
+			    $(common-objpfx)config.make $(..)Makerules \
 			    $(sysdep-makefiles) $(sysdep-makeconfigs) \
 			    $(sysd-rules-force)
 	-@rm -f $@T
-	(echo 'sysd-rules-sysdirs := $(config-sysdirs)';		      \
-	 for dir in $(config-sysdirs); do				      \
-	   case "$$dir" in						      \
-	   /*) ;;							      \
-	   *) dir="\$$(..)$$dir" ;;					      \
-	   esac;							      \
-	   asm='.S';							      \
-	   $(check-inhibit-asm)						      \
-	   for o in $(all-object-suffixes); do				      \
-	     set $(subst :, ,$(sysd-rules-patterns));			      \
-	     while [ $$# -ge 2 ]; do					      \
-	       t=$$1; shift; 						      \
-	       d=$$1; shift;						      \
-	       v=$${t%%%}; [ x"$$v" = x ] || v="\$$($${v}CPPFLAGS)";	      \
-	       for s in $$asm .c; do					      \
-		 echo "\$$(objpfx)$$t$$o: $$dir/$$d$$s \$$(before-compile)";  \
-		 echo "	\$$(compile-command$$s) $$v";			      \
-	       done;							      \
-	     done;							      \
-	   done;							      \
-	   echo "\$$(inst_includedir)/%.h: $$dir/%.h \$$(+force)";	      \
-	   echo "	\$$(do-install)"; 				      \
-	 done;								      \
-	 echo 'sysd-rules-done = t') > $@T
+	LC_ALL=C $(AWK) -f $< > $@T \
+			-v all_object_suffixes='$(all-object-suffixes)' \
+			-v inhibit_sysdep_asm='$(inhibit-sysdep-asm)' \
+			-v sysd_rules_patterns='$(sysd-rules-patterns)' \
+			-v config_sysdirs='$(config-sysdirs)'
 	mv -f $@T $@

 ifndef sysd-rules-done
@@ -432,13 +409,33 @@ map-file = $(firstword $($(@F:.so=-map)) \
 load-map-file = $(map-file:%=-Wl,--version-script=%)
 endif

+# Compiler arguments to use to link a shared object with libc and
+# ld.so.  This is intended to be as similar as possible to a default
+# link with an installed libc.
+link-libc-args = -Wl,--start-group \
+		 $(libc-for-link) \
+		 $(common-objpfx)libc_nonshared.a \
+		 $(as-needed) $(elfobjdir)/ld.so $(no-as-needed) \
+		 -Wl,--end-group
+
+# The corresponding shared libc to use.  This may be modified for a
+# particular target.
+libc-for-link = $(common-objpfx)libc.so
+
+# The corresponding dependencies.  As these are used in dependencies,
+# not just commands, they cannot use target-specific variables so need
+# to name both possible libc.so objects.
+link-libc-deps = $(common-objpfx)libc.so $(common-objpfx)linkobj/libc.so \
+		 $(common-objpfx)libc_nonshared.a $(elfobjdir)/ld.so
+
 # Pattern rule to build a shared object from an archive of PIC objects.
 # This must come after the installation rules so Make doesn't try to
 # build shared libraries in place from the installed *_pic.a files.
 # $(LDLIBS-%.so) may contain -l switches to generate run-time dependencies
-# on other shared objects.
-lib%.so: lib%_pic.a $(+preinit) $(+postinit) $(+interp)
-	$(build-shlib)
+# on other shared objects.  The linking with libc and ld.so is intended
+# to be as similar as possible to a default link with an installed libc.
+lib%.so: lib%_pic.a $(+preinit) $(+postinit) $(+interp) $(link-libc-deps)
+	$(build-shlib) $(link-libc-args)

 define build-shlib-helper
 $(LINK.o) -shared $(static-libgcc) -Wl,-O1 $(sysdep-LDFLAGS) \
@@ -513,17 +510,19 @@ endef
 # not for shared objects
 define build-module
 $(build-module-helper) -o $@ $(shlib-lds-flags) \
-	  $(csu-objpfx)abi-note.o $(build-module-objlist)
+	  $(csu-objpfx)abi-note.o $(build-module-objlist) $(link-libc-args)
 endef
 define build-module-asneeded
 $(build-module-helper) -o $@ $(shlib-lds-flags) \
 	  $(csu-objpfx)abi-note.o \
-	  -Wl,--as-needed $(build-module-objlist) -Wl,--no-as-needed
+	  -Wl,--as-needed $(build-module-objlist) -Wl,--no-as-needed \
+	  $(link-libc-args)
 endef

 build-module-helper-objlist = \
 	$(patsubst %_pic.a,$(whole-archive) %_pic.a $(no-whole-archive),\
-		   $(filter-out %.lds $(map-file) $(+preinit) $(+postinit),$^))
+		   $(filter-out %.lds $(map-file) $(+preinit) $(+postinit) \
+				$(link-libc-deps),$^))

 build-module-objlist = $(build-module-helper-objlist) $(LDLIBS-$(@F:%.so=%).so)
 build-shlib-objlist = $(build-module-helper-objlist) \
@@ -566,6 +565,9 @@ generated += libc_pic.opts libc_pic.os.clean
 libc_pic_clean := .clean
 endif

+# Do not filter ld.so out of libc.so link.
+$(common-objpfx)libc.so: link-libc-deps = # empty
+
 # Use our own special initializer and finalizer files for libc.so.
 $(common-objpfx)libc.so: $(elfobjdir)/soinit.os \
 			 $(common-objpfx)libc_pic.os$(libc_pic_clean) \
@@ -621,8 +623,7 @@ include $(patsubst %,$(..)extra-modules.mk,$(modules-names))

 extra-modules-build := $(filter-out $(modules-names-nobuild),$(modules-names))
 $(extra-modules-build:%=$(objpfx)%.so): $(objpfx)%.so: \
-		$(objpfx)%.os $(shlib-lds) \
-		$(common-objpfx)libc.so $(common-objpfx)libc_nonshared.a
+		$(objpfx)%.os $(shlib-lds) $(link-libs-deps)
 	$(build-module)
 endif

@@ -9,13 +9,27 @@ Version 2.18

 * The following bugs are resolved with this release:

-  10060, 10062, 10357, 11120, 11561, 12723, 13550, 13889, 13951, 13988,
-  14142, 14176, 14200, 14280, 14293, 14317, 14327, 14478, 14496, 14686,
-  14812, 14888, 14920, 14964, 14981, 14982, 14985, 14994, 14996, 15003,
-  15006, 15007, 15020, 15023, 15036, 15054, 15055, 15062, 15078, 15084,
-  15085, 15086, 15160, 15214, 15221, 15232, 15234, 15283, 15285, 15287,
-  15304, 15305, 15307, 15309, 15327, 15330, 15335, 15336, 15337, 15342,
-  15346, 15361, 15366, 15380, 15394, 15405, 15406, 15409.
+  2546, 2560, 5159, 6809, 7006, 10060, 10062, 10283, 10357, 10686, 11120,
+  11561, 12310, 12387, 12492, 12515, 12723, 13550, 13889, 13951, 13988,
+  14142, 14176, 14200, 14256, 14280, 14293, 14317, 14327, 14478, 14496,
+  14582, 14686, 14812, 14888, 14894, 14907, 14908, 14909, 14920, 14952,
+  14964, 14981, 14982, 14985, 14991, 14994, 14996, 15000, 15003, 15006,
+  15007, 15014, 15020, 15022, 15023, 15036, 15054, 15055, 15062, 15078,
+  15084, 15085, 15086, 15100, 15160, 15214, 15221, 15232, 15234, 15283,
+  15285, 15287, 15304, 15305, 15307, 15309, 15327, 15330, 15335, 15336,
+  15337, 15339, 15342, 15346, 15359, 15361, 15366, 15380, 15381, 15394,
+  15395, 15405, 15406, 15409, 15416, 15418, 15419, 15423, 15424, 15426,
+  15429, 15431, 15432, 15441, 15442, 15448, 15465, 15480, 15485, 15488,
+  15490, 15492, 15493, 15497, 15506, 15529, 15536, 15553, 15577, 15583,
+  15618, 15627, 15631, 15654, 15655, 15666, 15667, 15674, 15711, 15755,
+  15759.
+
+* CVE-2013-2207 Incorrectly granting access to another user's pseudo-terminal
+  has been fixed by disabling the use of pt_chown (Bugzilla #15755).
+  Distributions can re-enable building and using pt_chown via the new configure
+  option `--enable-pt_chown'.  Enabling the use of pt_chown carries with it
+  considerable security risks and should only be used if the distribution
+  understands and accepts the risks.

 * CVE-2013-0242 Buffer overrun in regexp matcher has been fixed (Bugzilla
  #15078).
@@ -33,30 +47,63 @@ Version 2.18
 * Support for priority inherited mutexes in pthread condition variables on
  non-x86 architectures.

+* Port to Xilinx MicroBlaze contributed by David Holsgrove.
+
+* Optimized string functions for AArch64.  Implemented by Marcus Shawcroft.
+
+* Optimized string functions for ARM.  Implemented by Will Newton and
+  Richard Henderson.
+
+* Optimized libm functions for SPARC.  Implemented by David S. Miller.
+
+* Support for building more of ARM glibc as Thumb-2 code.  Implemented by
+  Richard Henderson.
+
+* Support for building most of MIPS glibc as MIPS16 code.  Implemented by
+  Chung-Lin Tang, Maciej W. Rozycki and Maxim Kuvyrkov.
+
 * Added a benchmark framework to track performance of functions in glibc.

 * New <math.h> macro named issignaling to check for a signaling NaN (sNaN).
  It is based on draft TS 18661 and currently enabled as a GNU extension.
+
+* On Linux, the clock function now uses the clock_gettime system call
+  for improved precision, rather than old times system call.
+
+* Added new API functions pthread_getattr_default_np and
+  pthread_setattr_default_np to get and set the default pthread
+  attributes of a process.
+
+* Added support for TSX lock elision for pthread mutexes on i386 and x86-64.
+  This may improve lock scaling of existing programs on TSX capable systems.
+  When the --enable-lock-elision=yes parameter is specified at configure
+  time lock elision will be enabled by default for all PTHREAD_MUTEX_DEFAULT
+  mutexes.
+
+* Support added for AT_HWCAP2 (to coincide with Linux kernel 3.10
+  availability).  Implemented by Ryan S. Arnold.
+
+* Support added for POWER8 platform.  Implemented by Ryan S. Arnold.

 Version 2.17

 * The following bugs are resolved with this release:

  1349, 3439, 3479, 3665, 5044, 5246, 5298, 5400, 6530, 6677, 6778, 6808,
-  9685, 9914, 10014, 10038, 10114, 10631, 10873, 11438, 11607, 11638, 11741,
-  12140, 13013, 13412, 13542, 13601, 13603, 13604, 13629, 13679, 13696,
-  13698, 13717, 13741, 13759, 13761, 13763, 13881, 13939, 13950, 13952,
-  13966, 14042, 14047, 14090, 14150, 14151, 14152, 14154, 14157, 14166,
-  14173, 14195, 14197, 14237, 14246, 14251, 14252, 14283, 14298, 14303,
-  14307, 14328, 14331, 14336, 14337, 14347, 14349, 14368, 14376, 14417,
-  14447, 14459, 14476, 14477, 14501, 14505, 14510, 14516, 14518, 14519,
-  14530, 14532, 14538, 14543, 14544, 14545, 14557, 14562, 14568, 14576,
-  14579, 14583, 14587, 14595, 14602, 14610, 14621, 14638, 14645, 14648,
-  14652, 14660, 14661, 14669, 14672, 14683, 14694, 14716, 14719, 14743,
-  14767, 14783, 14784, 14785, 14793, 14796, 14797, 14801, 14803, 14805,
-  14807, 14811, 14815, 14821, 14822, 14824, 14828, 14831, 14833, 14835,
-  14838, 14856, 14863, 14865, 14866, 14868, 14869, 14871, 14872, 14879,
-  14889, 14893, 14898, 14914.
+  9685, 9914, 10014, 10038, 10114, 10191, 10631, 10873, 11438, 11607, 11638,
+  11741, 12140, 13013, 13412, 13542, 13601, 13603, 13604, 13629, 13679,
+  13696, 13698, 13717, 13741, 13759, 13761, 13763, 13881, 13939, 13950,
+  13952, 13966, 14042, 14047, 14090, 14150, 14151, 14152, 14154, 14157,
+  14166, 14173, 14195, 14197, 14237, 14246, 14251, 14252, 14283, 14298,
+  14303, 14307, 14328, 14331, 14336, 14337, 14347, 14349, 14368, 14376,
+  14417, 14447, 14459, 14476, 14477, 14501, 14505, 14510, 14516, 14518,
+  14519, 14530, 14532, 14538, 14543, 14544, 14545, 14557, 14562, 14568,
+  14576, 14579, 14583, 14587, 14595, 14602, 14610, 14621, 14638, 14645,
+  14648, 14652, 14660, 14661, 14669, 14672, 14683, 14694, 14716, 14719,
+  14743, 14767, 14783, 14784, 14785, 14793, 14796, 14797, 14801, 14803,
+  14805, 14807, 14811, 14815, 14821, 14822, 14824, 14828, 14831, 14833,
+  14835, 14838, 14856, 14863, 14865, 14866, 14868, 14869, 14871, 14872,
+  14879, 14889, 14893, 14898, 14914.

 * Optimization of memcpy for MIPS.

@@ -102,6 +102,7 @@ libpthread {
  GLIBC_2.6
  GLIBC_2.11
  GLIBC_2.12
+  GLIBC_2.18
  GLIBC_PRIVATE
 }
 libresolv {
@@ -17,137 +17,122 @@


 # Makefile for benchmark tests.  The only useful target here is `bench`.
-
-# Adding a new function `foo`:
-# ---------------------------
-
-# - Append the function name to the bench variable
-
-# - Define foo-ITER with the number of iterations you want to run.  Keep it
-#   high enough that the overhead of clock_gettime is only a small fraction of
-#   the total run time of the test.  A good idea would be to keep the run time
-#   of each test at around 10 seconds for x86_64.  That is just a guideline,
-#   since some scenarios may require higher run times.
-
-# - Define foo-ARGLIST as a colon separated list of types of the input
-#   arguments.  Use `void` if function does not take any inputs.  Put in quotes
-#   if the input argument is a pointer, e.g.:
-
-#      malloc-ARGLIST: "void *"
-
-# - Define foo-RET as the type the function returns.  Skip if the function
-#   returns void.  One could even skip foo-ARGLIST if the function does not
-#   take any inputs AND the function returns void.
-
-
-# - Make a file called `foo-inputs` with one input value per line, an input
-#   being a comma separated list of arguments to be passed into the function.
-#   See pow-inputs for an example.
+# Add benchmark functions in alphabetical order.

 subdir := benchtests
-bench := exp pow rint sin cos tan atan modf \
-	 slowexp slowpow slowsin slowcos slowtan slowatan
+bench := acos acosh asin asinh atan atanh cos cosh exp log modf pow rint sin \
+	 sinh tan tanh

-# exp function fast path: sysdeps/ieee754/dbl-64/e_exp.c
-exp-ITER = 5e8
-exp-ARGLIST = double
-exp-RET = double
-LDFLAGS-bench-exp = -lm
+# String function benchmarks.
+string-bench := bcopy bzero memccpy memchr memcmp memmem memmove mempcpy \
+		memset rawmemchr stpcpy stpncpy strcasecmp strcasestr strcat \
+		strchr strchrnul strcmp strcpy strcspn strlen strncasecmp \
+		strncat strncmp strncpy strnlen strpbrk strrchr strspn strstr \
+		strcpy_chk stpcpy_chk
+string-bench-ifunc := $(addsuffix -ifunc, $(string-bench))
+string-bench-all := $(string-bench) $(string-bench-ifunc)

-# pow function fast path: sysdeps/ieee754/dbl-64/e_pow.c
-pow-ITER = 2e8
-pow-ARGLIST = double:double
-pow-RET = double
-LDFLAGS-bench-pow = -lm
+benchset := $(string-bench-all)

-rint-ITER = 250000000
-rint-ARGLIST = double
-rint-RET = double
-LDFLAGS-bench-rint = -lm
+acos-ARGLIST = double
+acos-RET = double
+LDFLAGS-bench-acos = -lm

-# exp function slowest path: sysdeps/ieee754/dbl-64/mpexp.c
-slowexp-ITER = 3e5
-slowexp-ARGLIST = double
-slowexp-RET = double
-slowexp-INCLUDE = slowexp.c
-LDFLAGS-bench-slowexp = -lm
+acosh-ARGLIST = double
+acosh-RET = double
+LDFLAGS-bench-acosh = -lm

-# sin function fast path: sysdeps/ieee754/dbl-64/s_sin.c
-sin-ITER = 3e9
-sin-ARGLIST = double
-sin-RET = double
-LDFLAGS-bench-sin = -lm
+asin-ARGLIST = double
+asin-RET = double
+LDFLAGS-bench-asin = -lm

-# cos function fast path: sysdeps/ieee754/dbl-64/s_sin.c
-cos-ITER = 3e9
-cos-ARGLIST = double
-cos-RET = double
-LDFLAGS-bench-cos = -lm
+asinh-ARGLIST = double
+asinh-RET = double
+LDFLAGS-bench-asinh = -lm

-# tan function fast path: sysdeps/ieee754/dbl-64/s_tan.c
-tan-ITER = 3e9
-tan-ARGLIST = double
-tan-RET = double
-LDFLAGS-bench-tan = -lm
-
-# atan function fast path: sysdeps/ieee754/dbl-64/s_atan.c
-atan-ITER = 6e9
 atan-ARGLIST = double
 atan-RET = double
 LDFLAGS-bench-atan = -lm

-# pow function slowest path: sysdeps/ieee754/dbl-64/slowpow.c
-slowpow-ITER = 1e5
-slowpow-ARGLIST = double:double
-slowpow-RET = double
-slowpow-INCLUDE = slowpow.c
-LDFLAGS-bench-slowpow = -lm
+atanh-ARGLIST = double
+atanh-RET = double
+LDFLAGS-bench-atanh = -lm

-# sin function slowest path: sysdeps/ieee754/dbl-64/sincos32.c
-slowsin-ITER = 3e7
-slowsin-ARGLIST = double
-slowsin-RET = double
-slowsin-INCLUDE = slowsin.c
-LDFLAGS-bench-slowsin = -lm
+cos-ARGLIST = double
+cos-RET = double
+LDFLAGS-bench-cos = -lm

-# cos function slowest path: sysdeps/ieee754/dbl-64/sincos32.c
-slowcos-ITER = 3e7
-slowcos-ARGLIST = double
-slowcos-RET = double
-slowcos-INCLUDE = slowcos.c
-LDFLAGS-bench-slowcos = -lm
+cosh-ARGLIST = double
+cosh-RET = double
+LDFLAGS-bench-cosh = -lm

-# tan function slowest path: sysdeps/ieee754/dbl-64/mptan.c
-slowtan-ITER = 3e7
-slowtan-ARGLIST = double
-slowtan-RET = double
-slowtan-INCLUDE = slowtan.c
-LDFLAGS-bench-slowtan = -lm
+exp-ARGLIST = double
+exp-RET = double
+LDFLAGS-bench-exp = -lm

-# atan function slowest path: sysdeps/ieee754/dbl-64/mpatan.c
-slowatan-ITER = 3e8
-slowatan-ARGLIST = double
-slowatan-RET = double
-slowatan-INCLUDE = slowatan.c
-LDFLAGS-bench-slowatan = -lm
+log-ARGLIST = double
+log-RET = double
+LDFLAGS-bench-log = -lm
+
+pow-ARGLIST = double:double
+pow-RET = double
+LDFLAGS-bench-pow = -lm
+
+rint-ARGLIST = double
+rint-RET = double
+LDFLAGS-bench-rint = -lm
+
+sin-ARGLIST = double
+sin-RET = double
+LDFLAGS-bench-sin = -lm
+
+sinh-ARGLIST = double
+sinh-RET = double
+LDFLAGS-bench-sinh = -lm
+
+tan-ARGLIST = double
+tan-RET = double
+LDFLAGS-bench-tan = -lm
+
+tanh-ARGLIST = double
+tanh-RET = double
+LDFLAGS-bench-tanh = -lm



 # Rules to build and execute the benchmarks.  Do not put any benchmark
 # parameters beyond this point.

+# We don't want the benchmark programs to run in parallel since that could
+# affect their performance.
+.NOTPARALLEL:
+
 include ../Makeconfig
 include ../Rules

 binaries-bench := $(addprefix $(objpfx)bench-,$(bench))
+binaries-benchset := $(addprefix $(objpfx)bench-,$(benchset))
+
+# The default duration: 10 seconds.
+ifndef BENCH_DURATION
+BENCH_DURATION := 10
+endif
+
+CPPFLAGS-nonlib += -DDURATION=$(BENCH_DURATION)
+
+# Use clock_gettime to measure performance of functions.  The default is to use
+# HP_TIMING if it is available.
+ifdef USE_CLOCK_GETTIME
+CPPFLAGS-nonlib += -DUSE_CLOCK_GETTIME
+endif

 # This makes sure CPPFLAGS-nonlib and CFLAGS-nonlib are passed
 # for all these modules.
-cpp-srcs-left := $(binaries-bench:=.c)
+cpp-srcs-left := $(binaries-benchset:=.c) $(binaries-bench:=.c)
 lib := nonlib
 include $(patsubst %,$(..)cppflags-iterator.mk,$(cpp-srcs-left))

-bench-deps := bench-skeleton.c Makefile
+bench-deps := bench-skeleton.c bench-timing.h Makefile

 run-bench = $(test-wrapper-env) \
 	    GCONV_PATH=$(common-objpfx)iconvdata LC_ALL=C \
@@ -155,8 +140,17 @@ run-bench = $(test-wrapper-env) \

 bench-clean:
 	rm -f $(binaries-bench) $(addsuffix .o,$(binaries-bench))
+	rm -f $(binaries-benchset) $(addsuffix .o,$(binaries-benchset))

-bench: $(binaries-bench)
+bench: bench-set bench-func
+
+bench-set: $(binaries-benchset)
+	for run in $^; do \
+	  echo "Running $${run}"; \
+	  $(run-bench) > $${run}.out; \
+	done
+
+bench-func: $(binaries-bench)
 	{ for run in $^; do \
 	  echo "Running $${run}" >&2; \
 	  $(run-bench); \
@@ -166,7 +160,7 @@ bench: $(binaries-bench)
 	fi; \
 	mv -f $(objpfx)bench.out-tmp $(objpfx)bench.out

-$(binaries-bench): %: %.o \
+$(binaries-bench) $(binaries-benchset): %: %.o \
  $(sort $(filter $(common-objpfx)lib%,$(link-libc))) \
  $(addprefix $(csu-objpfx),start.o) $(+preinit) $(+postinit)
 	$(+link)
@@ -176,5 +170,5 @@ $(objpfx)bench-%.c: %-inputs $(bench-deps)
 	  cat $($*-INCLUDE); \
 	fi; \
 	$(..)scripts/bench.pl $(patsubst %-inputs,%,$<) \
-	  $($*-ITER) $($*-ARGLIST) $($*-RET); } > $@-tmp
+	  $($*-ARGLIST) $($*-RET); } > $@-tmp
 	mv -f $@-tmp $@
@@ -0,0 +1,89 @@
+Using the glibc microbenchmark suite
+====================================
+
+The glibc microbenchmark suite automatically generates code for specified
+functions, builds and calls them repeatedly for given inputs to give some
+basic performance properties of the function.
+
+Running the benchmark:
+=====================
+
+The benchmark can be executed by invoking make as follows:
+
+  $ make bench
+
+This runs each function for 10 seconds and appends its output to
+benchtests/bench.out.  To ensure that the tests are rebuilt, one could run:
+
+  $ make bench-clean
+
+The duration of each test can be configured setting the BENCH_DURATION variable
+in the call to make.  One should run `make bench-clean' before changing
+BENCH_DURATION.
+
+  $ make BENCH_DURATION=1 bench
+
+The benchmark suite does function call measurements using architecture-specific
+high precision timing instructions whenever available.  When such support is
+not available, it uses clock_gettime (CLOCK_PROCESS_CPUTIME_ID).  One can force
+the benchmark to use clock_gettime by invoking make as follows:
+
+  $ make USE_CLOCK_GETTIME=1 bench
+
+Again, one must run `make bench-clean' before changing the measurement method.
+
+Adding a function to benchtests:
+===============================
+
+If the name of the function is `foo', then the following procedure should allow
+one to add `foo' to the bench tests:
+
+- Append the function name to the bench variable in the Makefile.
+
+- Define foo-ARGLIST as a colon separated list of types of the input
+  arguments.  Use `void' if function does not take any inputs.  Put in quotes
+  if the input argument is a pointer, e.g.:
+
+     malloc-ARGLIST: "void *"
+
+- Define foo-RET as the type the function returns.  Skip if the function
+  returns void.  One could even skip foo-ARGLIST if the function does not
+  take any inputs AND the function returns void.
+
+- Make a file called `foo-inputs` with one input value per line, an input
+  being a comma separated list of arguments to be passed into the function.
+  See pow-inputs for an example.
+
+  The script that parses the -inputs file treats lines beginning with a single
+  `#' as comments.  Lines beginning with two hashes `##' are treated specially
+  as `directives'.
+
+Multiple execution units per function:
+=====================================
+
+Some functions have distinct performance characteristics for different input
+domains and it may be necessary to measure those separately.  For example, some
+math functions perform computations at different levels of precision (64-bit vs
+240-bit vs 768-bit) and mixing them does not give a very useful picture of the
+performance of these functions.  One could separate inputs for these domains in
+the same file by using the `name' directive that looks something like this:
+
+  ##name: 240bit
+
+See the pow-inputs file for an example of what such a partitioned input file
+would look like.
+
+Benchmark Sets:
+==============
+
+In addition to standard benchmarking of functions, one may also generate
+custom outputs for a set of functions.  This is currently used by string
+function benchmarks where the aim is to compare performance between
+implementations at various alignments and for various sizes.
+
+To add a benchset for `foo':
+
+- Add `foo' to the benchset variable.
+- Write your bench-foo.c that prints out the measurements to stdout.
+- On execution, a bench-foo.out is created in $(objpfx) with the contents of
+  stdout.
@@ -0,0 +1,7 @@
+0.5
+0.1
+0.2
+0.3
+0.4
+0.8
+0.7
@@ -0,0 +1,5 @@
+0.1
+0.2
+0.3
+0.4
+0.5
@@ -0,0 +1,7 @@
+0.5
+0.1
+0.2
+0.3
+0.4
+0.8
+0.7
@@ -0,0 +1,5 @@
+0.1
+0.2
+0.3
+0.4
+0.5
@@ -1,3 +1,9 @@
 0x1.000000c5cba86p0
 0x1.000001883003ap0
 0x1.00000dfb2b674p0
+# atan slowest path at 768 bits
+# Implemented in sysdeps/ieee754/dbl-64/mpatan.c
+## name: 768bits
+0x1.000000c5cba87p0
+0x1.000001883003bp0
+0x1.00000dfb2b675p0
@@ -0,0 +1,5 @@
+0.1
+0.2
+0.3
+0.4
+0.5
@@ -1,4 +1,4 @@
-/* Define slowcos.
+/* Measure IFUNC implementations of bcopy function.
   Copyright (C) 2013 Free Software Foundation, Inc.
   This file is part of the GNU C Library.

@@ -16,4 +16,5 @@
   License along with the GNU C Library; if not, see
   <http://www.gnu.org/licenses/>.  */

-#define slowcos cos
+#define TEST_IFUNC 1
+#include "bench-bcopy.c"
@@ -1,4 +1,4 @@
-/* Define slowatan.
+/* Measure bcopy functions.
   Copyright (C) 2013 Free Software Foundation, Inc.
   This file is part of the GNU C Library.

@@ -16,4 +16,5 @@
   License along with the GNU C Library; if not, see
   <http://www.gnu.org/licenses/>.  */

-#define slowatan atan
+#define TEST_BCOPY
+#include "bench-memmove.c"
@@ -0,0 +1,20 @@
+/* Measure IFUNC implementations of bzero function.
+   Copyright (C) 2013 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#define TEST_IFUNC 1
+#include "bench-bzero.c"
@@ -1,4 +1,4 @@
-/* Define slowexp.
+/* Measure bzero functions.
   Copyright (C) 2013 Free Software Foundation, Inc.
   This file is part of the GNU C Library.

@@ -15,5 +15,5 @@
   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, see
   <http://www.gnu.org/licenses/>.  */
-
-#define slowexp exp
+#define TEST_BZERO
+#include "bench-memset.c"
@@ -0,0 +1,20 @@
+/* Measure IFUNC implementations of memccpy function.
+   Copyright (C) 2013 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#define TEST_IFUNC 1
+#include "bench-memccpy.c"
@@ -0,0 +1,169 @@
+/* Measure memccpy functions.
+   Copyright (C) 2013 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#define TEST_MAIN
+#define TEST_NAME "memccpy"
+#include "bench-string.h"
+
+void *simple_memccpy (void *, const void *, int, size_t);
+void *stupid_memccpy (void *, const void *, int, size_t);
+
+IMPL (stupid_memccpy, 0)
+IMPL (simple_memccpy, 0)
+IMPL (memccpy, 1)
+
+void *
+simple_memccpy (void *dst, const void *src, int c, size_t n)
+{
+  const char *s = src;
+  char *d = dst;
+
+  while (n-- > 0)
+    if ((*d++ = *s++) == (char) c)
+      return d;
+
+  return NULL;
+}
+
+void *
+stupid_memccpy (void *dst, const void *src, int c, size_t n)
+{
+  void *p = memchr (src, c, n);
+
+  if (p != NULL)
+    return mempcpy (dst, src, p - src + 1);
+
+  memcpy (dst, src, n);
+  return NULL;
+}
+
+typedef void *(*proto_t) (void *, const void *, int c, size_t);
+
+static void
+do_one_test (impl_t *impl, void *dst, const void *src, int c, size_t len,
+	     size_t n)
+{
+  void *expect = len > n ? NULL : (char *) dst + len;
+  if (CALL (impl, dst, src, c, n) != expect)
+    {
+      error (0, 0, "Wrong result in function %s %p %p", impl->name,
+	     CALL (impl, dst, src, c, n), expect);
+      ret = 1;
+      return;
+    }
+
+  if (memcmp (dst, src, len > n ? n : len) != 0)
+    {
+      error (0, 0, "Wrong result in function %s", impl->name);
+      ret = 1;
+      return;
+    }
+
+  if (HP_TIMING_AVAIL)
+    {
+      hp_timing_t start __attribute__ ((unused));
+      hp_timing_t stop __attribute__ ((unused));
+      hp_timing_t best_time = ~ (hp_timing_t) 0;
+      size_t i;
+
+      for (i = 0; i < 32; ++i)
+	{
+	  HP_TIMING_NOW (start);
+	  CALL (impl, dst, src, c, n);
+	  HP_TIMING_NOW (stop);
+	  HP_TIMING_BEST (best_time, start, stop);
+	}
+
+      printf ("\t%zd", (size_t) best_time);
+    }
+}
+
+static void
+do_test (size_t align1, size_t align2, int c, size_t len, size_t n,
+	 int max_char)
+{
+  size_t i;
+  char *s1, *s2;
+
+  align1 &= 7;
+  if (align1 + len >= page_size)
+    return;
+
+  align2 &= 7;
+  if (align2 + len >= page_size)
+    return;
+
+  s1 = (char *) (buf1 + align1);
+  s2 = (char *) (buf2 + align2);
+
+  for (i = 0; i < len - 1; ++i)
+    {
+      s1[i] = 32 + 23 * i % (max_char - 32);
+      if (s1[i] == (char) c)
+	--s1[i];
+    }
+  s1[len - 1] = c;
+  for (i = len; i + align1 < page_size && i < len + 64; ++i)
+    s1[i] = 32 + 32 * i % (max_char - 32);
+
+  if (HP_TIMING_AVAIL)
+    printf ("Length %4zd, n %4zd, char %d, alignment %2zd/%2zd:", len, n, c, align1, align2);
+
+  FOR_EACH_IMPL (impl, 0)
+    do_one_test (impl, s2, s1, c, len, n);
+
+  if (HP_TIMING_AVAIL)
+    putchar ('\n');
+}
+
+int
+test_main (void)
+{
+  size_t i;
+
+  test_init ();
+
+  printf ("%28s", "");
+  FOR_EACH_IMPL (impl, 0)
+    printf ("\t%s", impl->name);
+  putchar ('\n');
+
+  for (i = 1; i < 8; ++i)
+    {
+      do_test (i, i, 12, 16, 16, 127);
+      do_test (i, i, 23, 16, 16, 255);
+      do_test (i, 2 * i, 28, 16, 16, 127);
+      do_test (2 * i, i, 31, 16, 16, 255);
+      do_test (8 - i, 2 * i, 1, 1 << i, 2 << i, 127);
+      do_test (2 * i, 8 - i, 17, 2 << i, 1 << i, 127);
+      do_test (8 - i, 2 * i, 0, 1 << i, 2 << i, 255);
+      do_test (2 * i, 8 - i, i, 2 << i, 1 << i, 255);
+    }
+
+  for (i = 1; i < 8; ++i)
+    {
+      do_test (0, 0, i, 4 << i, 8 << i, 127);
+      do_test (0, 0, i, 16 << i, 8 << i, 127);
+      do_test (8 - i, 2 * i, i, 4 << i, 8 << i, 127);
+      do_test (8 - i, 2 * i, i, 16 << i, 8 << i, 127);
+    }
+
+  return ret;
+}
+
+#include "../test-skeleton.c"
@@ -0,0 +1,20 @@
+/* Measure IFUNC implementations of memchr function.
+   Copyright (C) 2013 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#define TEST_IFUNC 1
+#include "bench-memchr.c"
@@ -0,0 +1,137 @@
+/* Measure memchr functions.
+   Copyright (C) 2013 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#define TEST_MAIN
+#define TEST_NAME "memchr"
+#include "bench-string.h"
+
+typedef char *(*proto_t) (const char *, int, size_t);
+char *simple_memchr (const char *, int, size_t);
+
+IMPL (simple_memchr, 0)
+IMPL (memchr, 1)
+
+char *
+simple_memchr (const char *s, int c, size_t n)
+{
+  while (n--)
+    if (*s++ == (char) c)
+      return (char *) s - 1;
+  return NULL;
+}
+
+static void
+do_one_test (impl_t *impl, const char *s, int c, size_t n, char *exp_res)
+{
+  char *res = CALL (impl, s, c, n);
+  if (res != exp_res)
+    {
+      error (0, 0, "Wrong result in function %s %p %p", impl->name,
+	     res, exp_res);
+      ret = 1;
+      return;
+    }
+
+  if (HP_TIMING_AVAIL)
+    {
+      hp_timing_t start __attribute ((unused));
+      hp_timing_t stop __attribute ((unused));
+      hp_timing_t best_time = ~ (hp_timing_t) 0;
+      size_t i;
+
+      for (i = 0; i < 32; ++i)
+	{
+	  HP_TIMING_NOW (start);
+	  CALL (impl, s, c, n);
+	  HP_TIMING_NOW (stop);
+	  HP_TIMING_BEST (best_time, start, stop);
+	}
+
+      printf ("\t%zd", (size_t) best_time);
+    }
+}
+
+static void
+do_test (size_t align, size_t pos, size_t len, int seek_char)
+{
+  size_t i;
+  char *result;
+
+  align &= 7;
+  if (align + len >= page_size)
+    return;
+
+  for (i = 0; i < len; ++i)
+    {
+      buf1[align + i] = 1 + 23 * i % 127;
+      if (buf1[align + i] == seek_char)
+        buf1[align + i] = seek_char + 1;
+    }
+  buf1[align + len] = 0;
+
+  if (pos < len)
+    {
+      buf1[align + pos] = seek_char;
+      buf1[align + len] = -seek_char;
+      result = (char *) (buf1 + align + pos);
+    }
+  else
+    {
+      result = NULL;
+      buf1[align + len] = seek_char;
+    }
+
+  if (HP_TIMING_AVAIL)
+    printf ("Length %4zd, alignment %2zd:", pos, align);
+
+  FOR_EACH_IMPL (impl, 0)
+    do_one_test (impl, (char *) (buf1 + align), seek_char, len, result);
+
+  if (HP_TIMING_AVAIL)
+    putchar ('\n');
+}
+
+int
+test_main (void)
+{
+  size_t i;
+
+  test_init ();
+
+  printf ("%20s", "");
+  FOR_EACH_IMPL (impl, 0)
+    printf ("\t%s", impl->name);
+  putchar ('\n');
+
+  for (i = 1; i < 8; ++i)
+    {
+      do_test (0, 16 << i, 2048, 23);
+      do_test (i, 64, 256, 23);
+      do_test (0, 16 << i, 2048, 0);
+      do_test (i, 64, 256, 0);
+    }
+  for (i = 1; i < 32; ++i)
+    {
+      do_test (0, i, i + 1, 23);
+      do_test (0, i, i + 1, 0);
+    }
+
+  return ret;
+}
+
+#include "../test-skeleton.c"
@@ -0,0 +1,20 @@
+/* Measure IFUNC implementations of memcmp function.
+   Copyright (C) 2013 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#define TEST_IFUNC 1
+#include "bench-memcmp.c"
@@ -0,0 +1,183 @@
+/* Measure memcmp functions.
+   Copyright (C) 2013 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#define TEST_MAIN
+#ifdef WIDE
+# define TEST_NAME "wmemcmp"
+#else
+# define TEST_NAME "memcmp"
+#endif
+#include "bench-string.h"
+#ifdef WIDE
+# include <inttypes.h>
+# include <wchar.h>
+
+# define MEMCMP wmemcmp
+# define MEMCPY wmemcpy
+# define SIMPLE_MEMCMP simple_wmemcmp
+# define CHAR wchar_t
+# define UCHAR wchar_t
+# define CHARBYTES 4
+# define CHAR__MIN WCHAR_MIN
+# define CHAR__MAX WCHAR_MAX
+int
+simple_wmemcmp (const wchar_t *s1, const wchar_t *s2, size_t n)
+{
+  int ret = 0;
+  /* Warning!
+	wmemcmp has to use SIGNED comparison for elements.
+	memcmp has to use UNSIGNED comparison for elemnts.
+  */
+  while (n-- && (ret = *s1 < *s2 ? -1 : *s1 == *s2 ? 0 : 1) == 0) {s1++; s2++;}
+  return ret;
+}
+#else
+# include <limits.h>
+
+# define MEMCMP memcmp
+# define MEMCPY memcpy
+# define SIMPLE_MEMCMP simple_memcmp
+# define CHAR char
+# define MAX_CHAR 255
+# define UCHAR unsigned char
+# define CHARBYTES 1
+# define CHAR__MIN CHAR_MIN
+# define CHAR__MAX CHAR_MAX
+
+int
+simple_memcmp (const char *s1, const char *s2, size_t n)
+{
+  int ret = 0;
+
+  while (n-- && (ret = *(unsigned char *) s1++ - *(unsigned char *) s2++) == 0);
+  return ret;
+}
+#endif
+
+typedef int (*proto_t) (const CHAR *, const CHAR *, size_t);
+
+IMPL (SIMPLE_MEMCMP, 0)
+IMPL (MEMCMP, 1)
+
+static void
+do_one_test (impl_t *impl, const CHAR *s1, const CHAR *s2, size_t len,
+	     int exp_result)
+{
+  if (HP_TIMING_AVAIL)
+    {
+      hp_timing_t start __attribute ((unused));
+      hp_timing_t stop __attribute ((unused));
+      hp_timing_t best_time = ~ (hp_timing_t) 0;
+      size_t i;
+
+      for (i = 0; i < 32; ++i)
+	{
+	  HP_TIMING_NOW (start);
+	  CALL (impl, s1, s2, len);
+	  HP_TIMING_NOW (stop);
+	  HP_TIMING_BEST (best_time, start, stop);
+	}
+
+      printf ("\t%zd", (size_t) best_time);
+    }
+}
+
+static void
+do_test (size_t align1, size_t align2, size_t len, int exp_result)
+{
+  size_t i;
+  CHAR *s1, *s2;
+
+  if (len == 0)
+    return;
+
+  align1 &= 63;
+  if (align1 + (len + 1) * CHARBYTES >= page_size)
+    return;
+
+  align2 &= 63;
+  if (align2 + (len + 1) * CHARBYTES >= page_size)
+    return;
+
+  s1 = (CHAR *) (buf1 + align1);
+  s2 = (CHAR *) (buf2 + align2);
+
+  for (i = 0; i < len; i++)
+    s1[i] = s2[i] = 1 + (23 << ((CHARBYTES - 1) * 8)) * i % CHAR__MAX;
+
+  s1[len] = align1;
+  s2[len] = align2;
+  s2[len - 1] -= exp_result;
+
+  if (HP_TIMING_AVAIL)
+    printf ("Length %4zd, alignment %2zd/%2zd:", len, align1, align2);
+
+  FOR_EACH_IMPL (impl, 0)
+    do_one_test (impl, s1, s2, len, exp_result);
+
+  if (HP_TIMING_AVAIL)
+    putchar ('\n');
+}
+
+int
+test_main (void)
+{
+  size_t i;
+
+  test_init ();
+
+  printf ("%23s", "");
+  FOR_EACH_IMPL (impl, 0)
+    printf ("\t%s", impl->name);
+  putchar ('\n');
+
+  for (i = 1; i < 16; ++i)
+    {
+      do_test (i * CHARBYTES, i * CHARBYTES, i, 0);
+      do_test (i * CHARBYTES, i * CHARBYTES, i, 1);
+      do_test (i * CHARBYTES, i * CHARBYTES, i, -1);
+    }
+
+  for (i = 0; i < 16; ++i)
+    {
+      do_test (0, 0, i, 0);
+      do_test (0, 0, i, 1);
+      do_test (0, 0, i, -1);
+    }
+
+  for (i = 1; i < 10; ++i)
+    {
+      do_test (0, 0, 2 << i, 0);
+      do_test (0, 0, 2 << i, 1);
+      do_test (0, 0, 2 << i, -1);
+      do_test (0, 0, 16 << i, 0);
+      do_test ((8 - i) * CHARBYTES, (2 * i) * CHARBYTES, 16 << i, 0);
+      do_test (0, 0, 16 << i, 1);
+      do_test (0, 0, 16 << i, -1);
+    }
+
+  for (i = 1; i < 8; ++i)
+    {
+      do_test (i * CHARBYTES, 2 * (i * CHARBYTES), 8 << i, 0);
+      do_test (i * CHARBYTES, 2 * (i * CHARBYTES), 8 << i, 1);
+      do_test (i * CHARBYTES, 2 * (i * CHARBYTES), 8 << i, -1);
+    }
+
+  return ret;
+}
+#include "../test-skeleton.c"
@@ -0,0 +1,20 @@
+/* Measure IFUNC implementations of memcpy function.
+   Copyright (C) 2013 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#define TEST_IFUNC 1
+#include "bench-memcpy.c"
@@ -0,0 +1,163 @@
+/* Measure memcpy functions.
+   Copyright (C) 2013 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifndef MEMCPY_RESULT
+# define MEMCPY_RESULT(dst, len) dst
+# define MIN_PAGE_SIZE 131072
+# define TEST_MAIN
+# define TEST_NAME "memcpy"
+# include "bench-string.h"
+
+char *simple_memcpy (char *, const char *, size_t);
+char *builtin_memcpy (char *, const char *, size_t);
+
+IMPL (simple_memcpy, 0)
+IMPL (builtin_memcpy, 0)
+IMPL (memcpy, 1)
+
+char *
+simple_memcpy (char *dst, const char *src, size_t n)
+{
+  char *ret = dst;
+  while (n--)
+    *dst++ = *src++;
+  return ret;
+}
+
+char *
+builtin_memcpy (char *dst, const char *src, size_t n)
+{
+  return __builtin_memcpy (dst, src, n);
+}
+#endif
+
+typedef char *(*proto_t) (char *, const char *, size_t);
+
+static void
+do_one_test (impl_t *impl, char *dst, const char *src,
+	     size_t len)
+{
+  if (CALL (impl, dst, src, len) != MEMCPY_RESULT (dst, len))
+    {
+      error (0, 0, "Wrong result in function %s %p %p", impl->name,
+	     CALL (impl, dst, src, len), MEMCPY_RESULT (dst, len));
+      ret = 1;
+      return;
+    }
+
+  if (memcmp (dst, src, len) != 0)
+    {
+      error (0, 0, "Wrong result in function %s dst \"%s\" src \"%s\"",
+	     impl->name, dst, src);
+      ret = 1;
+      return;
+    }
+
+  if (HP_TIMING_AVAIL)
+    {
+      hp_timing_t start __attribute ((unused));
+      hp_timing_t stop __attribute ((unused));
+      hp_timing_t best_time = ~ (hp_timing_t) 0;
+      size_t i;
+
+      for (i = 0; i < 32; ++i)
+	{
+	  HP_TIMING_NOW (start);
+	  CALL (impl, dst, src, len);
+	  HP_TIMING_NOW (stop);
+	  HP_TIMING_BEST (best_time, start, stop);
+	}
+
+      printf ("\t%zd", (size_t) best_time);
+    }
+}
+
+static void
+do_test (size_t align1, size_t align2, size_t len)
+{
+  size_t i, j;
+  char *s1, *s2;
+
+  align1 &= 63;
+  if (align1 + len >= page_size)
+    return;
+
+  align2 &= 63;
+  if (align2 + len >= page_size)
+    return;
+
+  s1 = (char *) (buf1 + align1);
+  s2 = (char *) (buf2 + align2);
+
+  for (i = 0, j = 1; i < len; i++, j += 23)
+    s1[i] = j;
+
+  if (HP_TIMING_AVAIL)
+    printf ("Length %4zd, alignment %2zd/%2zd:", len, align1, align2);
+
+  FOR_EACH_IMPL (impl, 0)
+    do_one_test (impl, s2, s1, len);
+
+  if (HP_TIMING_AVAIL)
+    putchar ('\n');
+}
+
+int
+test_main (void)
+{
+  size_t i;
+
+  test_init ();
+
+  printf ("%23s", "");
+  FOR_EACH_IMPL (impl, 0)
+    printf ("\t%s", impl->name);
+  putchar ('\n');
+
+  for (i = 0; i < 18; ++i)
+    {
+      do_test (0, 0, 1 << i);
+      do_test (i, 0, 1 << i);
+      do_test (0, i, 1 << i);
+      do_test (i, i, 1 << i);
+    }
+
+  for (i = 0; i < 32; ++i)
+    {
+      do_test (0, 0, i);
+      do_test (i, 0, i);
+      do_test (0, i, i);
+      do_test (i, i, i);
+    }
+
+  for (i = 3; i < 32; ++i)
+    {
+      if ((i & (i - 1)) == 0)
+	continue;
+      do_test (0, 0, 16 * i);
+      do_test (i, 0, 16 * i);
+      do_test (0, i, 16 * i);
+      do_test (i, i, 16 * i);
+    }
+
+  do_test (0, 0, getpagesize ());
+
+  return ret;
+}
+
+#include "../test-skeleton.c"
@@ -0,0 +1,20 @@
+/* Measure IFUNC implementations of memmem function.
+   Copyright (C) 2013 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#define TEST_IFUNC 1
+#include "bench-memmem.c"
@@ -0,0 +1,172 @@
+/* Measure memmem functions.
+   Copyright (C) 2013 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#define TEST_MAIN
+#define TEST_NAME "memmem"
+#define BUF1PAGES 20
+#define ITERATIONS 500
+#include "bench-string.h"
+
+typedef char *(*proto_t) (const void *, size_t, const void *, size_t);
+void *simple_memmem (const void *, size_t, const void *, size_t);
+
+IMPL (simple_memmem, 0)
+IMPL (memmem, 1)
+
+void *
+simple_memmem (const void *haystack, size_t haystack_len, const void *needle,
+	       size_t needle_len)
+{
+  const char *begin;
+  const char *const last_possible
+    = (const char *) haystack + haystack_len - needle_len;
+
+  if (needle_len == 0)
+    /* The first occurrence of the empty string is deemed to occur at
+       the beginning of the string.  */
+    return (void *) haystack;
+
+  /* Sanity check, otherwise the loop might search through the whole
+     memory.  */
+  if (__builtin_expect (haystack_len < needle_len, 0))
+    return NULL;
+
+  for (begin = (const char *) haystack; begin <= last_possible; ++begin)
+    if (begin[0] == ((const char *) needle)[0] &&
+	!memcmp ((const void *) &begin[1],
+		 (const void *) ((const char *) needle + 1),
+		 needle_len - 1))
+      return (void *) begin;
+
+  return NULL;
+}
+
+static void
+do_one_test (impl_t *impl, const void *haystack, size_t haystack_len,
+	     const void *needle, size_t needle_len, const void *expected)
+{
+  if (HP_TIMING_AVAIL)
+    {
+      hp_timing_t start __attribute ((unused));
+      hp_timing_t stop __attribute ((unused));
+      hp_timing_t best_time = ~ (hp_timing_t) 0;
+      size_t i;
+
+      for (i = 0; i < 32; ++i)
+	{
+	  HP_TIMING_NOW (start);
+	  CALL (impl, haystack, haystack_len, needle, needle_len);
+	  HP_TIMING_NOW (stop);
+	  HP_TIMING_BEST (best_time, start, stop);
+	}
+
+      printf ("\t%zd", (size_t) best_time);
+    }
+}
+
+static void
+do_test (const char *str, size_t len, size_t idx)
+{
+  char tmpbuf[len];
+
+  memcpy (tmpbuf, buf1 + idx, len);
+  memcpy (buf1 + idx, str, len);
+
+  if (HP_TIMING_AVAIL)
+    printf ("String %s, offset %zd:", str, idx);
+
+  FOR_EACH_IMPL (impl, 0)
+    do_one_test (impl, buf1, BUF1PAGES * page_size, str, len, buf1 + idx);
+
+  memcpy (buf1 + idx, tmpbuf, len);
+
+  if (HP_TIMING_AVAIL)
+    putchar ('\n');
+}
+
+static void
+do_random_tests (void)
+{
+  for (size_t n = 0; n < ITERATIONS; ++n)
+    {
+      char tmpbuf[32];
+
+      size_t shift = random () % 11;
+      size_t rel = random () % ((2 << (shift + 1)) * 64);
+      size_t idx = MIN ((2 << shift) * 64 + rel, BUF1PAGES * page_size - 2);
+      size_t len = random () % (sizeof (tmpbuf) - 1) + 1;
+      len = MIN (len, BUF1PAGES * page_size - idx - 1);
+      memcpy (tmpbuf, buf1 + idx, len);
+      for (size_t i = random () % len / 2 + 1; i > 0; --i)
+	{
+	  size_t off = random () % len;
+	  char ch = '0' + random () % 10;
+
+	  buf1[idx + off] = ch;
+	}
+
+      if (HP_TIMING_AVAIL)
+	printf ("String %.*s, offset %zd:", (int) len, buf1 + idx, idx);
+
+      FOR_EACH_IMPL (impl, 0)
+	do_one_test (impl, buf1, BUF1PAGES * page_size, buf1 + idx, len,
+		     buf1 + idx);
+
+      if (HP_TIMING_AVAIL)
+	putchar ('\n');
+
+      memcpy (buf1 + idx, tmpbuf, len);
+    }
+}
+
+static const char *const strs[] =
+  {
+    "00000", "00112233", "0123456789", "0000111100001111",
+    "00000111110000022222", "012345678901234567890",
+    "abc0", "aaaa0", "abcabc0"
+  };
+
+
+int
+test_main (void)
+{
+  size_t i;
+
+  test_init ();
+
+  printf ("%23s", "");
+  FOR_EACH_IMPL (impl, 0)
+    printf ("\t%s", impl->name);
+  putchar ('\n');
+
+  for (i = 0; i < BUF1PAGES * page_size; ++i)
+    buf1[i] = 60 + random () % 32;
+
+  for (i = 0; i < sizeof (strs) / sizeof (strs[0]); ++i)
+    for (size_t j = 0; j < 120; j += 7)
+      {
+	size_t len = strlen (strs[i]);
+
+	do_test (strs[i], len, j);
+      }
+
+  do_random_tests ();
+  return ret;
+}
+
+#include "../test-skeleton.c"
@@ -0,0 +1,20 @@
+/* Measure IFUNC implementations of memmove function.
+   Copyright (C) 2013 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#define TEST_IFUNC 1
+#include "bench-memmove.c"
@@ -0,0 +1,188 @@
+/* Measure memmove functions.
+   Copyright (C) 2013 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#define TEST_MAIN
+#ifdef TEST_BCOPY
+# define TEST_NAME "bcopy"
+#else
+# define TEST_NAME "memmove"
+#endif
+#include "bench-string.h"
+
+char *simple_memmove (char *, const char *, size_t);
+
+#ifdef TEST_BCOPY
+typedef void (*proto_t) (const char *, char *, size_t);
+void simple_bcopy (const char *, char *, size_t);
+
+IMPL (simple_bcopy, 0)
+IMPL (bcopy, 1)
+
+void
+simple_bcopy (const char *src, char *dst, size_t n)
+{
+  simple_memmove (dst, src, n);
+}
+#else
+typedef char *(*proto_t) (char *, const char *, size_t);
+
+IMPL (simple_memmove, 0)
+IMPL (memmove, 1)
+#endif
+
+char *
+inhibit_loop_to_libcall
+simple_memmove (char *dst, const char *src, size_t n)
+{
+  char *ret = dst;
+  if (src < dst)
+    {
+      dst += n;
+      src += n;
+      while (n--)
+	*--dst = *--src;
+    }
+  else
+    while (n--)
+      *dst++ = *src++;
+  return ret;
+}
+
+static void
+do_one_test (impl_t *impl, char *dst, char *src, const char *orig_src,
+	     size_t len)
+{
+  memcpy (src, orig_src, len);
+#ifdef TEST_BCOPY
+  CALL (impl, src, dst, len);
+#else
+  char *res;
+
+  res = CALL (impl, dst, src, len);
+  if (res != dst)
+    {
+      error (0, 0, "Wrong result in function %s %p %p", impl->name,
+	     res, dst);
+      ret = 1;
+      return;
+    }
+#endif
+
+  if (memcmp (dst, orig_src, len) != 0)
+    {
+      error (0, 0, "Wrong result in function %s dst \"%s\" src \"%s\"",
+	     impl->name, dst, src);
+      ret = 1;
+      return;
+    }
+
+  if (HP_TIMING_AVAIL)
+    {
+      hp_timing_t start __attribute ((unused));
+      hp_timing_t stop __attribute ((unused));
+      hp_timing_t best_time = ~ (hp_timing_t) 0;
+      size_t i;
+
+      for (i = 0; i < 32; ++i)
+	{
+	  HP_TIMING_NOW (start);
+#ifdef TEST_BCOPY
+	  CALL (impl, src, dst, len);
+#else
+	  CALL (impl, dst, src, len);
+#endif
+	  HP_TIMING_NOW (stop);
+	  HP_TIMING_BEST (best_time, start, stop);
+	}
+
+      printf ("\t%zd", (size_t) best_time);
+    }
+}
+
+static void
+do_test (size_t align1, size_t align2, size_t len)
+{
+  size_t i, j;
+  char *s1, *s2;
+
+  align1 &= 63;
+  if (align1 + len >= page_size)
+    return;
+
+  align2 &= 63;
+  if (align2 + len >= page_size)
+    return;
+
+  s1 = (char *) (buf1 + align1);
+  s2 = (char *) (buf2 + align2);
+
+  for (i = 0, j = 1; i < len; i++, j += 23)
+    s1[i] = j;
+
+  if (HP_TIMING_AVAIL)
+    printf ("Length %4zd, alignment %2zd/%2zd:", len, align1, align2);
+
+  FOR_EACH_IMPL (impl, 0)
+    do_one_test (impl, s2, (char *) (buf2 + align1), s1, len);
+
+  if (HP_TIMING_AVAIL)
+    putchar ('\n');
+}
+
+int
+test_main (void)
+{
+  size_t i;
+
+  test_init ();
+
+  printf ("%23s", "");
+  FOR_EACH_IMPL (impl, 0)
+    printf ("\t%s", impl->name);
+  putchar ('\n');
+
+  for (i = 0; i < 14; ++i)
+    {
+      do_test (0, 32, 1 << i);
+      do_test (32, 0, 1 << i);
+      do_test (0, i, 1 << i);
+      do_test (i, 0, 1 << i);
+    }
+
+  for (i = 0; i < 32; ++i)
+    {
+      do_test (0, 32, i);
+      do_test (32, 0, i);
+      do_test (0, i, i);
+      do_test (i, 0, i);
+    }
+
+  for (i = 3; i < 32; ++i)
+    {
+      if ((i & (i - 1)) == 0)
+	continue;
+      do_test (0, 32, 16 * i);
+      do_test (32, 0, 16 * i);
+      do_test (0, i, 16 * i);
+      do_test (i, 0, 16 * i);
+    }
+
+  return ret;
+}
+
+#include "../test-skeleton.c"
@@ -0,0 +1,20 @@
+/* Measure IFUNC implementations of mempcpy function.
+   Copyright (C) 2013 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#define TEST_IFUNC 1
+#include "bench-mempcpy.c"
@@ -0,0 +1,37 @@
+/* Measure mempcpy functions.
+   Copyright (C) 2013 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#define MEMCPY_RESULT(dst, len) (dst) + (len)
+#define TEST_MAIN
+#define TEST_NAME "mempcpy"
+#include "bench-string.h"
+
+char *simple_mempcpy (char *, const char *, size_t);
+
+IMPL (simple_mempcpy, 0)
+IMPL (mempcpy, 1)
+
+char *
+simple_mempcpy (char *dst, const char *src, size_t n)
+{
+  while (n--)
+    *dst++ = *src++;
+  return dst;
+}
+
+#include "bench-memcpy.c"
@@ -0,0 +1,20 @@
+/* Measure IFUNC implementations of memset function.
+   Copyright (C) 2013 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#define TEST_IFUNC 1
+#include "bench-memset.c"
@@ -0,0 +1,170 @@
+/* Measure memset functions.
+   Copyright (C) 2013 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#define TEST_MAIN
+#ifdef TEST_BZERO
+# define TEST_NAME "bzero"
+#else
+# define TEST_NAME "memset"
+#endif
+#define MIN_PAGE_SIZE 131072
+#include "bench-string.h"
+
+char *simple_memset (char *, int, size_t);
+
+#ifdef TEST_BZERO
+typedef void (*proto_t) (char *, size_t);
+void simple_bzero (char *, size_t);
+void builtin_bzero (char *, size_t);
+
+IMPL (simple_bzero, 0)
+IMPL (builtin_bzero, 0)
+IMPL (bzero, 1)
+
+void
+simple_bzero (char *s, size_t n)
+{
+  simple_memset (s, 0, n);
+}
+
+void
+builtin_bzero (char *s, size_t n)
+{
+  __builtin_bzero (s, n);
+}
+#else
+typedef char *(*proto_t) (char *, int, size_t);
+char *builtin_memset (char *, int, size_t);
+
+IMPL (simple_memset, 0)
+IMPL (builtin_memset, 0)
+IMPL (memset, 1)
+
+char *
+builtin_memset (char *s, int c, size_t n)
+{
+  return __builtin_memset (s, c, n);
+}
+#endif
+
+char *
+inhibit_loop_to_libcall
+simple_memset (char *s, int c, size_t n)
+{
+  char *r = s, *end = s + n;
+  while (r < end)
+    *r++ = c;
+  return s;
+}
+
+static void
+do_one_test (impl_t *impl, char *s, int c __attribute ((unused)), size_t n)
+{
+  char tstbuf[n];
+#ifdef TEST_BZERO
+  simple_bzero (tstbuf, n);
+  CALL (impl, s, n);
+  if (memcmp (s, tstbuf, n) != 0)
+#else
+  char *res = CALL (impl, s, c, n);
+  if (res != s
+      || simple_memset (tstbuf, c, n) != tstbuf
+      || memcmp (s, tstbuf, n) != 0)
+#endif
+    {
+      error (0, 0, "Wrong result in function %s", impl->name);
+      ret = 1;
+      return;
+    }
+
+  if (HP_TIMING_AVAIL)
+    {
+      hp_timing_t start __attribute ((unused));
+      hp_timing_t stop __attribute ((unused));
+      hp_timing_t best_time = ~ (hp_timing_t) 0;
+      size_t i;
+
+      for (i = 0; i < 32; ++i)
+	{
+	  HP_TIMING_NOW (start);
+#ifdef TEST_BZERO
+	  CALL (impl, s, n);
+#else
+	  CALL (impl, s, c, n);
+#endif
+
+	  HP_TIMING_NOW (stop);
+	  HP_TIMING_BEST (best_time, start, stop);
+	}
+
+      printf ("\t%zd", (size_t) best_time);
+    }
+}
+
+static void
+do_test (size_t align, int c, size_t len)
+{
+  align &= 7;
+  if (align + len > page_size)
+    return;
+
+  if (HP_TIMING_AVAIL)
+    printf ("Length %4zd, alignment %2zd, c %2d:", len, align, c);
+
+  FOR_EACH_IMPL (impl, 0)
+    do_one_test (impl, (char *) buf1 + align, c, len);
+
+  if (HP_TIMING_AVAIL)
+    putchar ('\n');
+}
+
+int
+test_main (void)
+{
+  size_t i;
+  int c = 0;
+
+  test_init ();
+
+  printf ("%24s", "");
+  FOR_EACH_IMPL (impl, 0)
+    printf ("\t%s", impl->name);
+  putchar ('\n');
+
+#ifndef TEST_BZERO
+  for (c = -65; c <= 130; c += 65)
+#endif
+    {
+      for (i = 0; i < 18; ++i)
+	do_test (0, c, 1 << i);
+      for (i = 1; i < 32; ++i)
+	{
+	  do_test (i, c, i);
+	  if (i & (i - 1))
+	    do_test (0, c, i);
+	}
+      do_test (1, c, 14);
+      do_test (3, c, 1024);
+      do_test (4, c, 64);
+      do_test (2, c, 25);
+    }
+
+  return ret;
+}
+
+#include "../test-skeleton.c"
@@ -17,23 +17,28 @@

 extern double modf (double, double *);

-#define CALL_BENCH_FUNC(j, i) modf ( in[j].arg0, &i);
+#define CALL_BENCH_FUNC(j, i) modf (in[j].arg0, &i);

 struct args
 {
-  double arg0;
+  volatile double arg0;
 } in[] =
 {
  {  42.42 },
  { -42.42 }
 };

-#define NUM_SAMPLES (sizeof (in) / sizeof (struct args))
+#define NUM_VARIANTS 1
+#define NUM_SAMPLES(v) (sizeof (in) / sizeof (struct args))

 static volatile double ret = 0.0;
-#define BENCH_FUNC(j) ({double iptr; ret =  CALL_BENCH_FUNC (j, iptr);})
+#define BENCH_FUNC(v, j) \
+({									      \
+  double iptr;								      \
+  ret =  CALL_BENCH_FUNC (j, iptr);					      \
+})

-#define ITER 250000000
 #define FUNCNAME "modf"
+#define VARIANT(v) FUNCNAME "()"

 #include "bench-skeleton.c"
@@ -0,0 +1,20 @@
+/* Measure IFUNC implementations of rawmemchr function.
+   Copyright (C) 2013 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#define TEST_IFUNC 1
+#include "bench-rawmemchr.c"
@@ -0,0 +1,133 @@
+/* Measure memchr functions.
+   Copyright (C) 2013 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <assert.h>
+
+#define TEST_MAIN
+#define TEST_NAME "rawmemchr"
+#include "bench-string.h"
+
+typedef char *(*proto_t) (const char *, int);
+char *simple_rawmemchr (const char *, int);
+
+IMPL (simple_rawmemchr, 0)
+IMPL (rawmemchr, 1)
+
+char *
+simple_rawmemchr (const char *s, int c)
+{
+  while (1)
+    if (*s++ == (char) c)
+      return (char *) s - 1;
+  return NULL;
+}
+
+static void
+do_one_test (impl_t *impl, const char *s, int c, char *exp_res)
+{
+  char *res = CALL (impl, s, c);
+  if (res != exp_res)
+    {
+      error (0, 0, "Wrong result in function %s %p %p", impl->name,
+	     res, exp_res);
+      ret = 1;
+      return;
+    }
+
+  if (HP_TIMING_AVAIL)
+    {
+      hp_timing_t start __attribute ((unused));
+      hp_timing_t stop __attribute ((unused));
+      hp_timing_t best_time = ~ (hp_timing_t) 0;
+      size_t i;
+
+      for (i = 0; i < 32; ++i)
+	{
+	  HP_TIMING_NOW (start);
+	  CALL (impl, s, c);
+	  HP_TIMING_NOW (stop);
+	  HP_TIMING_BEST (best_time, start, stop);
+	}
+
+      printf ("\t%zd", (size_t) best_time);
+    }
+}
+
+static void
+do_test (size_t align, size_t pos, size_t len, int seek_char)
+{
+  size_t i;
+  char *result;
+
+  align &= 7;
+  if (align + len >= page_size)
+    return;
+
+  for (i = 0; i < len; ++i)
+    {
+      buf1[align + i] = 1 + 23 * i % 127;
+      if (buf1[align + i] == seek_char)
+	buf1[align + i] = seek_char + 1;
+    }
+  buf1[align + len] = 0;
+
+  assert (pos < len);
+
+  buf1[align + pos] = seek_char;
+  buf1[align + len] = -seek_char;
+  result = (char *) (buf1 + align + pos);
+
+  if (HP_TIMING_AVAIL)
+    printf ("Length %4zd, alignment %2zd:", pos, align);
+
+  FOR_EACH_IMPL (impl, 0)
+    do_one_test (impl, (char *) (buf1 + align), seek_char, result);
+
+  if (HP_TIMING_AVAIL)
+    putchar ('\n');
+}
+
+int
+test_main (void)
+{
+  size_t i;
+
+  test_init ();
+
+  printf ("%20s", "");
+  FOR_EACH_IMPL (impl, 0)
+    printf ("\t%s", impl->name);
+  putchar ('\n');
+
+  for (i = 1; i < 7; ++i)
+    {
+      do_test (0, 16 << i, 2048, 23);
+      do_test (i, 64, 256, 23);
+      do_test (0, 16 << i, 2048, 0);
+      do_test (i, 64, 256, 0);
+    }
+  for (i = 1; i < 32; ++i)
+    {
+      do_test (0, i, i + 1, 23);
+      do_test (0, i, i + 1, 0);
+    }
+
+  return ret;
+}
+
+#include "../test-skeleton.c"
@@ -21,55 +21,90 @@
 #include <stdio.h>
 #include <time.h>
 #include <inttypes.h>
+#include "bench-timing.h"

+volatile unsigned int dontoptimize = 0;
+
+void
+startup (void)
+{
+  /* This loop should cause CPU to switch to maximal freqency.
+     This makes subsequent measurement more accurate.  We need a side effect
+     to prevent the loop being deleted by compiler.
+     This should be enough to cause CPU to speed up and it is simpler than
+     running loop for constant time. This is used when user does not have root
+     access to set a constant freqency.  */
+  for (int k = 0; k < 10000000; k++)
+    dontoptimize += 23 * dontoptimize + 2;
+}
+
+#define TIMESPEC_AFTER(a, b) \
+  (((a).tv_sec == (b).tv_sec) ?						      \
+     ((a).tv_nsec > (b).tv_nsec) :					      \
+	((a).tv_sec > (b).tv_sec))
 int
 main (int argc, char **argv)
 {
-  unsigned long i, j, k;
-  uint64_t total = 0, max = 0, min = 0x7fffffffffffffff;
-  struct timespec start, end;
+  unsigned long i, k;
+  struct timespec runtime;
+  timing_t start, end;

-  memset (&start, 0, sizeof (start));
-  memset (&end, 0, sizeof (end));
+  startup();

-  clock_getres (CLOCK_PROCESS_CPUTIME_ID, &start);
+  memset (&runtime, 0, sizeof (runtime));

-  /* Measure 1000 times the resolution of the clock.  So for a 1ns resolution
-     clock, we measure 1000 iterations of the function call at a time.
-     Measurements close to the minimum clock resolution won't make much sense,
-     but it's better than having nothing at all.  */
-  unsigned long iters = 1000 * start.tv_nsec;
-  unsigned long total_iters = ITER / iters;
+  unsigned long iters;

-  for (i = 0; i < NUM_SAMPLES; i++)
+  TIMING_INIT (iters);
+
+  for (int v = 0; v < NUM_VARIANTS; v++)
    {
-      for (j = 0; j < total_iters; j ++)
+      /* Run for approximately DURATION seconds.  */
+      clock_gettime (CLOCK_MONOTONIC_RAW, &runtime);
+      runtime.tv_sec += DURATION;
+
+      double d_total_i = 0;
+      timing_t total = 0, max = 0, min = 0x7fffffffffffffff;
+      while (1)
 	{
-	  clock_gettime (CLOCK_PROCESS_CPUTIME_ID, &start);
-	  for (k = 0; k < iters; k++)
-	    BENCH_FUNC(i);
-	  clock_gettime (CLOCK_PROCESS_CPUTIME_ID, &end);
+	  for (i = 0; i < NUM_SAMPLES (v); i++)
+	    {
+	      uint64_t cur;
+	      TIMING_NOW (start);
+	      for (k = 0; k < iters; k++)
+		BENCH_FUNC (v, i);
+	      TIMING_NOW (end);

-	  uint64_t cur = (end.tv_nsec - start.tv_nsec
-			 + ((end.tv_sec - start.tv_sec)
-			    * (uint64_t) 1000000000));
+	      TIMING_DIFF (cur, start, end);

-	  if (cur > max)
-	    max = cur;
+	      if (cur > max)
+		max = cur;

-	  if (cur < min)
-	    min = cur;
+	      if (cur < min)
+		min = cur;

-	  total += cur;
+	      TIMING_ACCUM (total, cur);
+
+	      d_total_i += iters;
+	    }
+	  struct timespec curtime;
+
+	  memset (&curtime, 0, sizeof (curtime));
+	  clock_gettime (CLOCK_MONOTONIC_RAW, &curtime);
+	  if (TIMESPEC_AFTER (curtime, runtime))
+	    goto done;
 	}
-    }

-  double d_total_s = total * 1e-9;
-  double d_iters = iters;
-  double d_total_i = (double)ITER * NUM_SAMPLES;
-  printf (FUNCNAME ": ITERS:%g: TOTAL:%gs, MAX:%gns, MIN:%gns, %g iter/s\n",
-	  d_total_i, d_total_s, max / d_iters, min / d_iters,
-	  d_total_i / d_total_s);
+      double d_total_s;
+      double d_iters;
+
+    done:
+      d_total_s = total;
+      d_iters = iters;
+
+      TIMING_PRINT_STATS (VARIANT (v), d_total_s, d_iters, d_total_i, max,
+			  min);
+    }

  return 0;
 }
@@ -0,0 +1,20 @@
+/* Measure IFUNC implementations of stpcpy function.
+   Copyright (C) 2013 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#define TEST_IFUNC 1
+#include "bench-stpcpy.c"
@@ -0,0 +1,36 @@
+/* Measure stpcpy functions.
+   Copyright (C) 2013 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#define STRCPY_RESULT(dst, len) ((dst) + (len))
+#define TEST_MAIN
+#define TEST_NAME "stpcpy"
+#include "bench-string.h"
+
+char *simple_stpcpy (char *, const char *);
+
+IMPL (simple_stpcpy, 0)
+IMPL (stpcpy, 1)
+
+char *
+simple_stpcpy (char *dst, const char *src)
+{
+  while ((*dst++ = *src++) != '\0');
+  return dst - 1;
+}
+
+#include "bench-strcpy.c"
@@ -0,0 +1,20 @@
+/* Measure IFUNC implementations of stpcpy checking function.
+   Copyright (C) 2013 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#define TEST_IFUNC 1
+#include "bench-stpcpy_chk.c"
@@ -0,0 +1,45 @@
+/* Measure stpcpy checking functions.
+   Copyright (C) 2013 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#define STRCPY_RESULT(dst, len) ((dst) + (len))
+#define TEST_MAIN
+#define TEST_NAME "stpcpy_chk"
+#include "bench-string.h"
+
+extern void __attribute__ ((noreturn)) __chk_fail (void);
+char *simple_stpcpy_chk (char *, const char *, size_t);
+extern char *normal_stpcpy (char *, const char *, size_t)
+  __asm ("stpcpy");
+extern char *__stpcpy_chk (char *, const char *, size_t);
+
+IMPL (simple_stpcpy_chk, 0)
+IMPL (normal_stpcpy, 1)
+IMPL (__stpcpy_chk, 2)
+
+char *
+simple_stpcpy_chk (char *dst, const char *src, size_t len)
+{
+  if (! len)
+    __chk_fail ();
+  while ((*dst++ = *src++) != '\0')
+    if (--len == 0)
+      __chk_fail ();
+  return dst - 1;
+}
+
+#include "bench-strcpy_chk.c"
@@ -0,0 +1,20 @@
+/* Measure IFUNC implementations of stpncpy function.
+   Copyright (C) 2013 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#define TEST_IFUNC 1
+#include "bench-stpncpy.c"
@@ -0,0 +1,59 @@
+/* Measure stpncpy functions.
+   Copyright (C) 2013 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#define STRNCPY_RESULT(dst, len, n) ((dst) + ((len) > (n) ? (n) : (len)))
+#define TEST_MAIN
+#define TEST_NAME "stpncpy"
+#include "bench-string.h"
+
+char *simple_stpncpy (char *, const char *, size_t);
+char *stupid_stpncpy (char *, const char *, size_t);
+
+IMPL (stupid_stpncpy, 0)
+IMPL (simple_stpncpy, 0)
+IMPL (stpncpy, 1)
+
+char *
+simple_stpncpy (char *dst, const char *src, size_t n)
+{
+  while (n--)
+    if ((*dst++ = *src++) == '\0')
+      {
+	size_t i;
+
+	for (i = 0; i < n; ++i)
+	  dst[i] = '\0';
+	return dst - 1;
+      }
+  return dst;
+}
+
+char *
+stupid_stpncpy (char *dst, const char *src, size_t n)
+{
+  size_t nc = strnlen (src, n);
+  size_t i;
+
+  for (i = 0; i < nc; ++i)
+    dst[i] = src[i];
+  for (; i < n; ++i)
+    dst[i] = '\0';
+  return dst + nc;
+}
+
+#include "bench-strncpy.c"
@@ -0,0 +1,20 @@
+/* Measure IFUNC implementations of strcasecmp function.
+   Copyright (C) 2013 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#define TEST_IFUNC 1
+#include "bench-strcasecmp.c"
@@ -0,0 +1,183 @@
+/* Measure strcasecmp functions.
+   Copyright (C) 2013 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <ctype.h>
+#define TEST_MAIN
+#define TEST_NAME "strcasecmp"
+#include "bench-string.h"
+
+typedef int (*proto_t) (const char *, const char *);
+static int simple_strcasecmp (const char *, const char *);
+static int stupid_strcasecmp (const char *, const char *);
+
+IMPL (stupid_strcasecmp, 0)
+IMPL (simple_strcasecmp, 0)
+IMPL (strcasecmp, 1)
+
+static int
+simple_strcasecmp (const char *s1, const char *s2)
+{
+  int ret;
+
+  while ((ret = ((unsigned char) tolower (*s1)
+		 - (unsigned char) tolower (*s2))) == 0
+	 && *s1++)
+    ++s2;
+  return ret;
+}
+
+static int
+stupid_strcasecmp (const char *s1, const char *s2)
+{
+  size_t ns1 = strlen (s1) + 1, ns2 = strlen (s2) + 1;
+  size_t n = ns1 < ns2 ? ns1 : ns2;
+  int ret = 0;
+
+  while (n--)
+    {
+      if ((ret = ((unsigned char) tolower (*s1)
+		  - (unsigned char) tolower (*s2))) != 0)
+	break;
+      ++s1;
+      ++s2;
+    }
+  return ret;
+}
+
+static void
+do_one_test (impl_t *impl, const char *s1, const char *s2, int exp_result)
+{
+  int result = CALL (impl, s1, s2);
+  if ((exp_result == 0 && result != 0)
+      || (exp_result < 0 && result >= 0)
+      || (exp_result > 0 && result <= 0))
+    {
+      error (0, 0, "Wrong result in function %s %d %d", impl->name,
+	     result, exp_result);
+      ret = 1;
+      return;
+    }
+
+  if (HP_TIMING_AVAIL)
+    {
+      hp_timing_t start __attribute ((unused));
+      hp_timing_t stop __attribute ((unused));
+      hp_timing_t best_time = ~ (hp_timing_t) 0;
+      size_t i;
+
+      for (i = 0; i < 32; ++i)
+	{
+	  HP_TIMING_NOW (start);
+	  CALL (impl, s1, s2);
+	  HP_TIMING_NOW (stop);
+	  HP_TIMING_BEST (best_time, start, stop);
+	}
+
+      printf ("\t%zd", (size_t) best_time);
+    }
+}
+
+static void
+do_test (size_t align1, size_t align2, size_t len, int max_char,
+	 int exp_result)
+{
+  size_t i;
+  char *s1, *s2;
+
+  if (len == 0)
+    return;
+
+  align1 &= 7;
+  if (align1 + len + 1 >= page_size)
+    return;
+
+  align2 &= 7;
+  if (align2 + len + 1 >= page_size)
+    return;
+
+  s1 = (char *) (buf1 + align1);
+  s2 = (char *) (buf2 + align2);
+
+  for (i = 0; i < len; i++)
+    {
+      s1[i] = toupper (1 + 23 * i % max_char);
+      s2[i] = tolower (s1[i]);
+    }
+
+  s1[len] = s2[len] = 0;
+  s1[len + 1] = 23;
+  s2[len + 1] = 24 + exp_result;
+  if ((s2[len - 1] == 'z' && exp_result == -1)
+      || (s2[len - 1] == 'a' && exp_result == 1))
+    s1[len - 1] += exp_result;
+  else
+    s2[len - 1] -= exp_result;
+
+  if (HP_TIMING_AVAIL)
+    printf ("Length %4zd, alignment %2zd/%2zd:", len, align1, align2);
+
+  FOR_EACH_IMPL (impl, 0)
+    do_one_test (impl, s1, s2, exp_result);
+
+  if (HP_TIMING_AVAIL)
+    putchar ('\n');
+}
+
+int
+test_main (void)
+{
+  size_t i;
+
+  test_init ();
+
+  printf ("%23s", "");
+  FOR_EACH_IMPL (impl, 0)
+    printf ("\t%s", impl->name);
+  putchar ('\n');
+
+  for (i = 1; i < 16; ++i)
+    {
+      do_test (i, i, i, 127, 0);
+      do_test (i, i, i, 127, 1);
+      do_test (i, i, i, 127, -1);
+    }
+
+  for (i = 1; i < 10; ++i)
+    {
+      do_test (0, 0, 2 << i, 127, 0);
+      do_test (0, 0, 2 << i, 254, 0);
+      do_test (0, 0, 2 << i, 127, 1);
+      do_test (0, 0, 2 << i, 254, 1);
+      do_test (0, 0, 2 << i, 127, -1);
+      do_test (0, 0, 2 << i, 254, -1);
+    }
+
+  for (i = 1; i < 8; ++i)
+    {
+      do_test (i, 2 * i, 8 << i, 127, 0);
+      do_test (2 * i, i, 8 << i, 254, 0);
+      do_test (i, 2 * i, 8 << i, 127, 1);
+      do_test (2 * i, i, 8 << i, 254, 1);
+      do_test (i, 2 * i, 8 << i, 127, -1);
+      do_test (2 * i, i, 8 << i, 254, -1);
+    }
+
+  return ret;
+}
+
+#include "../test-skeleton.c"
@@ -0,0 +1,20 @@
+/* Measure IFUNC implementations of strcasestr function.
+   Copyright (C) 2013 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#define TEST_IFUNC 1
+#include "bench-strcasestr.c"
@@ -0,0 +1,186 @@
+/* Measure strcasestr functions.
+   Copyright (C) 2013 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#define TEST_MAIN
+#define TEST_NAME "strcasestr"
+#include "bench-string.h"
+
+
+#define STRCASESTR simple_strcasestr
+#define NO_ALIAS
+#define __strncasecmp strncasecmp
+#include "../string/strcasestr.c"
+
+
+static char *
+stupid_strcasestr (const char *s1, const char *s2)
+{
+  ssize_t s1len = strlen (s1);
+  ssize_t s2len = strlen (s2);
+
+  if (s2len > s1len)
+    return NULL;
+
+  for (ssize_t i = 0; i <= s1len - s2len; ++i)
+    {
+      size_t j;
+      for (j = 0; j < s2len; ++j)
+	if (tolower (s1[i + j]) != tolower (s2[j]))
+	  break;
+      if (j == s2len)
+	return (char *) s1 + i;
+    }
+
+  return NULL;
+}
+
+
+typedef char *(*proto_t) (const char *, const char *);
+
+IMPL (stupid_strcasestr, 0)
+IMPL (simple_strcasestr, 0)
+IMPL (strcasestr, 1)
+
+
+static void
+do_one_test (impl_t *impl, const char *s1, const char *s2, char *exp_result)
+{
+  if (HP_TIMING_AVAIL)
+    {
+      hp_timing_t start __attribute ((unused));
+      hp_timing_t stop __attribute ((unused));
+      hp_timing_t best_time = ~(hp_timing_t) 0;
+      size_t i;
+
+      for (i = 0; i < 32; ++i)
+	{
+	  HP_TIMING_NOW (start);
+	  CALL (impl, s1, s2);
+	  HP_TIMING_NOW (stop);
+	  HP_TIMING_BEST (best_time, start, stop);
+	}
+
+      printf ("\t%zd", (size_t) best_time);
+    }
+}
+
+
+static void
+do_test (size_t align1, size_t align2, size_t len1, size_t len2,
+	 int fail)
+{
+  char *s1 = (char *) (buf1 + align1);
+  char *s2 = (char *) (buf2 + align2);
+
+  static const char d[] = "1234567890abcxyz";
+#define dl (sizeof (d) - 1)
+  char *ss2 = s2;
+  for (size_t l = len2; l > 0; l = l > dl ? l - dl : 0)
+    {
+      size_t t = l > dl ? dl : l;
+      ss2 = mempcpy (ss2, d, t);
+    }
+  s2[len2] = '\0';
+
+  if (fail)
+    {
+      char *ss1 = s1;
+      for (size_t l = len1; l > 0; l = l > dl ? l - dl : 0)
+	{
+	  size_t t = l > dl ? dl : l;
+	  memcpy (ss1, d, t);
+	  ++ss1[len2 > 7 ? 7 : len2 - 1];
+	  ss1 += t;
+	}
+    }
+  else
+    {
+      memset (s1, '0', len1);
+      for (size_t i = 0; i < len2; ++i)
+	s1[len1 - len2 + i] = toupper (s2[i]);
+    }
+  s1[len1] = '\0';
+
+  if (HP_TIMING_AVAIL)
+    printf ("Length %4zd/%zd, alignment %2zd/%2zd, %s:",
+	    len1, len2, align1, align2, fail ? "fail" : "found");
+
+  FOR_EACH_IMPL (impl, 0)
+    do_one_test (impl, s1, s2, fail ? NULL : s1 + len1 - len2);
+
+  if (HP_TIMING_AVAIL)
+    putchar ('\n');
+}
+
+static int
+test_main (void)
+{
+  test_init ();
+
+  printf ("%23s", "");
+  FOR_EACH_IMPL (impl, 0)
+    printf ("\t%s", impl->name);
+  putchar ('\n');
+
+  for (size_t klen = 2; klen < 32; ++klen)
+    for (size_t hlen = 2 * klen; hlen < 16 * klen; hlen += klen)
+      {
+	do_test (0, 0, hlen, klen, 0);
+	do_test (0, 0, hlen, klen, 1);
+	do_test (0, 3, hlen, klen, 0);
+	do_test (0, 3, hlen, klen, 1);
+	do_test (0, 9, hlen, klen, 0);
+	do_test (0, 9, hlen, klen, 1);
+	do_test (0, 15, hlen, klen, 0);
+	do_test (0, 15, hlen, klen, 1);
+
+	do_test (3, 0, hlen, klen, 0);
+	do_test (3, 0, hlen, klen, 1);
+	do_test (3, 3, hlen, klen, 0);
+	do_test (3, 3, hlen, klen, 1);
+	do_test (3, 9, hlen, klen, 0);
+	do_test (3, 9, hlen, klen, 1);
+	do_test (3, 15, hlen, klen, 0);
+	do_test (3, 15, hlen, klen, 1);
+
+	do_test (9, 0, hlen, klen, 0);
+	do_test (9, 0, hlen, klen, 1);
+	do_test (9, 3, hlen, klen, 0);
+	do_test (9, 3, hlen, klen, 1);
+	do_test (9, 9, hlen, klen, 0);
+	do_test (9, 9, hlen, klen, 1);
+	do_test (9, 15, hlen, klen, 0);
+	do_test (9, 15, hlen, klen, 1);
+
+	do_test (15, 0, hlen, klen, 0);
+	do_test (15, 0, hlen, klen, 1);
+	do_test (15, 3, hlen, klen, 0);
+	do_test (15, 3, hlen, klen, 1);
+	do_test (15, 9, hlen, klen, 0);
+	do_test (15, 9, hlen, klen, 1);
+	do_test (15, 15, hlen, klen, 0);
+	do_test (15, 15, hlen, klen, 1);
+      }
+
+  do_test (0, 0, page_size - 1, 16, 0);
+  do_test (0, 0, page_size - 1, 16, 1);
+
+  return ret;
+}
+
+#include "../test-skeleton.c"
@@ -0,0 +1,20 @@
+/* Measure IFUNC implementations of strcat function.
+   Copyright (C) 2013 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#define TEST_IFUNC 1
+#include "bench-strcat.c"
@@ -0,0 +1,155 @@
+/* Measure strcat functions.
+   Copyright (C) 2013 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#define TEST_MAIN
+#define TEST_NAME "strcat"
+#include "bench-string.h"
+
+typedef char *(*proto_t) (char *, const char *);
+char *simple_strcat (char *, const char *);
+
+IMPL (simple_strcat, 0)
+IMPL (strcat, 1)
+
+char *
+simple_strcat (char *dst, const char *src)
+{
+  char *ret = dst;
+  while (*dst++ != '\0');
+  --dst;
+  while ((*dst++ = *src++) != '\0');
+  return ret;
+}
+
+static void
+do_one_test (impl_t *impl, char *dst, const char *src)
+{
+  size_t k = strlen (dst);
+  if (CALL (impl, dst, src) != dst)
+    {
+      error (0, 0, "Wrong result in function %s %p %p", impl->name,
+	     CALL (impl, dst, src), dst);
+      ret = 1;
+      return;
+    }
+
+  if (strcmp (dst + k, src) != 0)
+    {
+      error (0, 0, "Wrong result in function %s dst \"%s\" src \"%s\"",
+	     impl->name, dst, src);
+      ret = 1;
+      return;
+    }
+
+  if (HP_TIMING_AVAIL)
+    {
+      hp_timing_t start __attribute ((unused));
+      hp_timing_t stop __attribute ((unused));
+      hp_timing_t best_time = ~ (hp_timing_t) 0;
+      size_t i;
+
+      for (i = 0; i < 32; ++i)
+	{
+	  dst[k] = '\0';
+	  HP_TIMING_NOW (start);
+	  CALL (impl, dst, src);
+	  HP_TIMING_NOW (stop);
+	  HP_TIMING_BEST (best_time, start, stop);
+	}
+
+      printf ("\t%zd", (size_t) best_time);
+    }
+}
+
+static void
+do_test (size_t align1, size_t align2, size_t len1, size_t len2, int max_char)
+{
+  size_t i;
+  char *s1, *s2;
+
+  align1 &= 7;
+  if (align1 + len1 >= page_size)
+    return;
+
+  align2 &= 7;
+  if (align2 + len1 + len2 >= page_size)
+    return;
+
+  s1 = (char *) (buf1 + align1);
+  s2 = (char *) (buf2 + align2);
+
+  for (i = 0; i < len1; ++i)
+    s1[i] = 32 + 23 * i % (max_char - 32);
+  s1[len1] = '\0';
+
+  for (i = 0; i < len2; i++)
+    s2[i] = 32 + 23 * i % (max_char - 32);
+
+  if (HP_TIMING_AVAIL)
+    printf ("Length %4zd/%4zd, alignment %2zd/%2zd:", len1, len2, align1, align2);
+
+  FOR_EACH_IMPL (impl, 0)
+    {
+      s2[len2] = '\0';
+      do_one_test (impl, s2, s1);
+    }
+
+  if (HP_TIMING_AVAIL)
+    putchar ('\n');
+}
+
+int
+test_main (void)
+{
+  size_t i;
+
+  test_init ();
+
+  printf ("%28s", "");
+  FOR_EACH_IMPL (impl, 0)
+    printf ("\t%s", impl->name);
+  putchar ('\n');
+
+  for (i = 0; i < 16; ++i)
+    {
+      do_test (0, 0, i, i, 127);
+      do_test (0, 0, i, i, 255);
+      do_test (0, i, i, i, 127);
+      do_test (i, 0, i, i, 255);
+    }
+
+  for (i = 1; i < 8; ++i)
+    {
+      do_test (0, 0, 8 << i, 8 << i, 127);
+      do_test (8 - i, 2 * i, 8 << i, 8 << i, 127);
+      do_test (0, 0, 8 << i, 2 << i, 127);
+      do_test (8 - i, 2 * i, 8 << i, 2 << i, 127);
+    }
+
+  for (i = 1; i < 8; ++i)
+    {
+      do_test (i, 2 * i, 8 << i, 1, 127);
+      do_test (2 * i, i, 8 << i, 1, 255);
+      do_test (i, i, 8 << i, 10, 127);
+      do_test (i, i, 8 << i, 10, 255);
+    }
+
+  return ret;
+}
+
+#include "../test-skeleton.c"
@@ -0,0 +1,20 @@
+/* Measure IFUNC implementations of strchr function.
+   Copyright (C) 2013 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#define TEST_IFUNC 1
+#include "bench-strchr.c"
@@ -0,0 +1,206 @@
+/* Measure STRCHR functions.
+   Copyright (C) 2013 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#define TEST_MAIN
+#ifndef WIDE
+# ifdef USE_FOR_STRCHRNUL
+#  define TEST_NAME "strchrnul"
+# else
+#  define TEST_NAME "strchr"
+# endif
+#else
+# define TEST_NAME "wcschr"
+#endif
+#include "bench-string.h"
+
+#ifndef WIDE
+# ifdef USE_FOR_STRCHRNUL
+#  define STRCHR strchrnul
+#  define stupid_STRCHR stupid_STRCHRNUL
+#  define simple_STRCHR simple_STRCHRNUL
+# else
+#  define STRCHR strchr
+# endif
+# define STRLEN strlen
+# define CHAR char
+# define BIG_CHAR CHAR_MAX
+# define MIDDLE_CHAR 127
+# define SMALL_CHAR 23
+# define UCHAR unsigned char
+#else
+# include <wchar.h>
+# define STRCHR wcschr
+# define STRLEN wcslen
+# define CHAR wchar_t
+# define BIG_CHAR WCHAR_MAX
+# define MIDDLE_CHAR 1121
+# define SMALL_CHAR 851
+# define UCHAR wchar_t
+#endif
+
+#ifdef USE_FOR_STRCHRNUL
+# define NULLRET(endptr) endptr
+#else
+# define NULLRET(endptr) NULL
+#endif
+
+
+typedef CHAR *(*proto_t) (const CHAR *, int);
+
+CHAR *
+simple_STRCHR (const CHAR *s, int c)
+{
+  for (; *s != (CHAR) c; ++s)
+    if (*s == '\0')
+      return NULLRET ((CHAR *) s);
+  return (CHAR *) s;
+}
+
+CHAR *
+stupid_STRCHR (const CHAR *s, int c)
+{
+  size_t n = STRLEN (s) + 1;
+
+  while (n--)
+    if (*s++ == (CHAR) c)
+      return (CHAR *) s - 1;
+  return NULLRET ((CHAR *) s - 1);
+}
+
+IMPL (stupid_STRCHR, 0)
+IMPL (simple_STRCHR, 0)
+IMPL (STRCHR, 1)
+
+static void
+do_one_test (impl_t *impl, const CHAR *s, int c, const CHAR *exp_res)
+{
+  if (HP_TIMING_AVAIL)
+    {
+      hp_timing_t start __attribute ((unused));
+      hp_timing_t stop __attribute ((unused));
+      hp_timing_t best_time = ~ (hp_timing_t) 0;
+      size_t i;
+
+      for (i = 0; i < 32; ++i)
+	{
+	  HP_TIMING_NOW (start);
+	  CALL (impl, s, c);
+	  HP_TIMING_NOW (stop);
+	  HP_TIMING_BEST (best_time, start, stop);
+	}
+
+      printf ("\t%zd", (size_t) best_time);
+    }
+}
+
+static void
+do_test (size_t align, size_t pos, size_t len, int seek_char, int max_char)
+/* For wcschr: align here means align not in bytes,
+   but in wchar_ts, in bytes it will equal to align * (sizeof (wchar_t))
+   len for wcschr here isn't in bytes but it's number of wchar_t symbols.  */
+{
+  size_t i;
+  CHAR *result;
+  CHAR *buf = (CHAR *) buf1;
+  align &= 15;
+  if ((align + len) * sizeof (CHAR) >= page_size)
+    return;
+
+  for (i = 0; i < len; ++i)
+    {
+      buf[align + i] = 32 + 23 * i % max_char;
+      if (buf[align + i] == seek_char)
+	buf[align + i] = seek_char + 1;
+      else if (buf[align + i] == 0)
+	buf[align + i] = 1;
+    }
+  buf[align + len] = 0;
+
+  if (pos < len)
+    {
+      buf[align + pos] = seek_char;
+      result = buf + align + pos;
+    }
+  else if (seek_char == 0)
+    result = buf + align + len;
+  else
+    result = NULLRET (buf + align + len);
+
+  if (HP_TIMING_AVAIL)
+    printf ("Length %4zd, alignment in bytes %2zd:",
+	    pos, align * sizeof (CHAR));
+
+  FOR_EACH_IMPL (impl, 0)
+    do_one_test (impl, buf + align, seek_char, result);
+
+  if (HP_TIMING_AVAIL)
+    putchar ('\n');
+}
+
+int
+test_main (void)
+{
+  size_t i;
+
+  test_init ();
+
+  printf ("%20s", "");
+  FOR_EACH_IMPL (impl, 0)
+    printf ("\t%s", impl->name);
+  putchar ('\n');
+
+  for (i = 1; i < 8; ++i)
+    {
+      do_test (0, 16 << i, 2048, SMALL_CHAR, MIDDLE_CHAR);
+      do_test (i, 16 << i, 2048, SMALL_CHAR, MIDDLE_CHAR);
+    }
+
+  for (i = 1; i < 8; ++i)
+    {
+      do_test (i, 64, 256, SMALL_CHAR, MIDDLE_CHAR);
+      do_test (i, 64, 256, SMALL_CHAR, BIG_CHAR);
+    }
+
+  for (i = 0; i < 32; ++i)
+    {
+      do_test (0, i, i + 1, SMALL_CHAR, MIDDLE_CHAR);
+      do_test (0, i, i + 1, SMALL_CHAR, BIG_CHAR);
+    }
+
+  for (i = 1; i < 8; ++i)
+    {
+      do_test (0, 16 << i, 2048, 0, MIDDLE_CHAR);
+      do_test (i, 16 << i, 2048, 0, MIDDLE_CHAR);
+    }
+
+  for (i = 1; i < 8; ++i)
+    {
+      do_test (i, 64, 256, 0, MIDDLE_CHAR);
+      do_test (i, 64, 256, 0, BIG_CHAR);
+    }
+
+  for (i = 0; i < 32; ++i)
+    {
+      do_test (0, i, i + 1, 0, MIDDLE_CHAR);
+      do_test (0, i, i + 1, 0, BIG_CHAR);
+    }
+
+  return ret;
+}
+
+#include "../test-skeleton.c"
@@ -0,0 +1,20 @@
+/* Measure IFUNC implementations of strchrnul function.
+   Copyright (C) 2013 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#define TEST_IFUNC 1
+#include "bench-strchrnul.c"
@@ -1,4 +1,4 @@
-/* Define slowpow.
+/* Measure strchrnul function.
   Copyright (C) 2013 Free Software Foundation, Inc.
   This file is part of the GNU C Library.

@@ -16,4 +16,5 @@
   License along with the GNU C Library; if not, see
   <http://www.gnu.org/licenses/>.  */

-#define slowpow pow
+#define USE_FOR_STRCHRNUL 1
+#include "bench-strchr.c"
@@ -0,0 +1,20 @@
+/* Measure IFUNC implementations of strcmp function.
+   Copyright (C) 2013 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#define TEST_IFUNC 1
+#include "bench-strcmp.c"
@@ -0,0 +1,247 @@
+/* Measure strcmp and wcscmp functions.
+   Copyright (C) 2013 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#define TEST_MAIN
+#ifdef WIDE
+# define TEST_NAME "wcscmp"
+#else
+# define TEST_NAME "strcmp"
+#endif
+#include "bench-string.h"
+
+#ifdef WIDE
+# include <wchar.h>
+
+# define L(str) L##str
+# define STRCMP wcscmp
+# define STRCPY wcscpy
+# define STRLEN wcslen
+# define MEMCPY wmemcpy
+# define SIMPLE_STRCMP simple_wcscmp
+# define STUPID_STRCMP stupid_wcscmp
+# define CHAR wchar_t
+# define UCHAR wchar_t
+# define CHARBYTES 4
+# define CHARBYTESLOG 2
+# define CHARALIGN __alignof__ (CHAR)
+# define MIDCHAR 0x7fffffff
+# define LARGECHAR 0xfffffffe
+# define CHAR__MAX WCHAR_MAX
+# define CHAR__MIN WCHAR_MIN
+
+/* Wcscmp uses signed semantics for comparison, not unsigned */
+/* Avoid using substraction since possible overflow */
+
+int
+simple_wcscmp (const wchar_t *s1, const wchar_t *s2)
+{
+  wchar_t c1, c2;
+  do
+    {
+      c1 = *s1++;
+      c2 = *s2++;
+      if (c2 == L'\0')
+      return c1 - c2;
+    }
+  while (c1 == c2);
+
+  return c1 < c2 ? -1 : 1;
+}
+
+int
+stupid_wcscmp (const wchar_t *s1, const wchar_t *s2)
+{
+  size_t ns1 = wcslen (s1) + 1;
+  size_t ns2 = wcslen (s2) + 1;
+  size_t n = ns1 < ns2 ? ns1 : ns2;
+  int ret = 0;
+
+  wchar_t c1, c2;
+
+  while (n--) {
+    c1 = *s1++;
+    c2 = *s2++;
+    if ((ret = c1 < c2 ? -1 : c1 == c2 ? 0 : 1) != 0)
+      break;
+  }
+  return ret;
+}
+
+#else
+# include <limits.h>
+
+# define L(str) str
+# define STRCMP strcmp
+# define STRCPY strcpy
+# define STRLEN strlen
+# define MEMCPY memcpy
+# define SIMPLE_STRCMP simple_strcmp
+# define STUPID_STRCMP stupid_strcmp
+# define CHAR char
+# define UCHAR unsigned char
+# define CHARBYTES 1
+# define CHARBYTESLOG 0
+# define CHARALIGN 1
+# define MIDCHAR 0x7f
+# define LARGECHAR 0xfe
+# define CHAR__MAX CHAR_MAX
+# define CHAR__MIN CHAR_MIN
+
+/* Strcmp uses unsigned semantics for comparison. */
+int
+simple_strcmp (const char *s1, const char *s2)
+{
+  int ret;
+
+  while ((ret = *(unsigned char *) s1 - *(unsigned char*) s2++) == 0 && *s1++);
+  return ret;
+}
+
+int
+stupid_strcmp (const char *s1, const char *s2)
+{
+  size_t ns1 = strlen (s1) + 1;
+  size_t ns2 = strlen (s2) + 1;
+  size_t n = ns1 < ns2 ? ns1 : ns2;
+  int ret = 0;
+
+  while (n--)
+    if ((ret = *(unsigned char *) s1++ - *(unsigned char *) s2++) != 0)
+      break;
+  return ret;
+}
+#endif
+
+typedef int (*proto_t) (const CHAR *, const CHAR *);
+
+IMPL (STUPID_STRCMP, 1)
+IMPL (SIMPLE_STRCMP, 1)
+IMPL (STRCMP, 1)
+
+static void
+do_one_test (impl_t *impl,
+	     const CHAR *s1, const CHAR *s2,
+	     int exp_result)
+{
+  if (HP_TIMING_AVAIL)
+    {
+      hp_timing_t start __attribute ((unused));
+      hp_timing_t stop __attribute ((unused));
+      hp_timing_t best_time = ~ (hp_timing_t) 0;
+      size_t i;
+
+      for (i = 0; i < 32; ++i)
+	{
+	  HP_TIMING_NOW (start);
+	  CALL (impl, s1, s2);
+	  HP_TIMING_NOW (stop);
+	  HP_TIMING_BEST (best_time, start, stop);
+	}
+
+      printf ("\t%zd", (size_t) best_time);
+    }
+}
+
+static void
+do_test (size_t align1, size_t align2, size_t len, int max_char,
+	 int exp_result)
+{
+  size_t i;
+
+  CHAR *s1, *s2;
+
+  if (len == 0)
+    return;
+
+  align1 &= 63;
+  if (align1 + (len + 1) * CHARBYTES >= page_size)
+    return;
+
+  align2 &= 63;
+  if (align2 + (len + 1) * CHARBYTES >= page_size)
+    return;
+
+  /* Put them close to the end of page.  */
+  i = align1 + CHARBYTES * (len + 2);
+  s1 = (CHAR *) (buf1 + ((page_size - i) / 16 * 16) + align1);
+  i = align2 + CHARBYTES * (len + 2);
+  s2 = (CHAR *) (buf2 + ((page_size - i) / 16 * 16)  + align2);
+
+  for (i = 0; i < len; i++)
+    s1[i] = s2[i] = 1 + (23 << ((CHARBYTES - 1) * 8)) * i % max_char;
+
+  s1[len] = s2[len] = 0;
+  s1[len + 1] = 23;
+  s2[len + 1] = 24 + exp_result;
+  s2[len - 1] -= exp_result;
+
+  if (HP_TIMING_AVAIL)
+    printf ("Length %4zd, alignment %2zd/%2zd:", len, align1, align2);
+
+  FOR_EACH_IMPL (impl, 0)
+    do_one_test (impl, s1, s2, exp_result);
+
+  if (HP_TIMING_AVAIL)
+    putchar ('\n');
+}
+
+int
+test_main (void)
+{
+  size_t i;
+
+  test_init ();
+
+  printf ("%23s", "");
+  FOR_EACH_IMPL (impl, 0)
+    printf ("\t%s", impl->name);
+  putchar ('\n');
+
+  for (i = 1; i < 32; ++i)
+    {
+      do_test (CHARBYTES * i, CHARBYTES * i, i, MIDCHAR, 0);
+      do_test (CHARBYTES * i, CHARBYTES * i, i, MIDCHAR, 1);
+      do_test (CHARBYTES * i, CHARBYTES * i, i, MIDCHAR, -1);
+    }
+
+  for (i = 1; i < 10 + CHARBYTESLOG; ++i)
+    {
+      do_test (0, 0, 2 << i, MIDCHAR, 0);
+      do_test (0, 0, 2 << i, LARGECHAR, 0);
+      do_test (0, 0, 2 << i, MIDCHAR, 1);
+      do_test (0, 0, 2 << i, LARGECHAR, 1);
+      do_test (0, 0, 2 << i, MIDCHAR, -1);
+      do_test (0, 0, 2 << i, LARGECHAR, -1);
+      do_test (0, CHARBYTES * i, 2 << i, MIDCHAR, 1);
+      do_test (CHARBYTES * i, CHARBYTES * (i + 1), 2 << i, LARGECHAR, 1);
+    }
+
+  for (i = 1; i < 8; ++i)
+    {
+      do_test (CHARBYTES * i, 2 * CHARBYTES * i, 8 << i, MIDCHAR, 0);
+      do_test (2 * CHARBYTES * i, CHARBYTES * i, 8 << i, LARGECHAR, 0);
+      do_test (CHARBYTES * i, 2 * CHARBYTES * i, 8 << i, MIDCHAR, 1);
+      do_test (2 * CHARBYTES * i, CHARBYTES * i, 8 << i, LARGECHAR, 1);
+      do_test (CHARBYTES * i, 2 * CHARBYTES * i, 8 << i, MIDCHAR, -1);
+      do_test (2 * CHARBYTES * i, CHARBYTES * i, 8 << i, LARGECHAR, -1);
+    }
+
+  return ret;
+}
+
+#include "../test-skeleton.c"
@@ -0,0 +1,20 @@
+/* Measure IFUNC implementations of strcpy function.
+   Copyright (C) 2013 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#define TEST_IFUNC 1
+#include "bench-strcpy.c"
@@ -0,0 +1,183 @@
+/* Measure strcpy functions.
+   Copyright (C) 2013 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifdef WIDE
+# include <wchar.h>
+# define CHAR wchar_t
+# define UCHAR wchar_t
+# define sfmt "ls"
+# define BIG_CHAR WCHAR_MAX
+# define SMALL_CHAR 1273
+# define STRCMP wcscmp
+# define MEMCMP wmemcmp
+# define MEMSET wmemset
+#else
+# define CHAR char
+# define UCHAR unsigned char
+# define sfmt "s"
+# define BIG_CHAR CHAR_MAX
+# define SMALL_CHAR 127
+# define STRCMP strcmp
+# define MEMCMP memcmp
+# define MEMSET memset
+#endif
+
+#ifndef STRCPY_RESULT
+# define STRCPY_RESULT(dst, len) dst
+# define TEST_MAIN
+# ifndef WIDE
+#  define TEST_NAME "strcpy"
+# else
+#  define TEST_NAME "wcscpy"
+# endif
+# include "bench-string.h"
+# ifndef WIDE
+#  define SIMPLE_STRCPY simple_strcpy
+#  define STRCPY strcpy
+# else
+#  define SIMPLE_STRCPY simple_wcscpy
+#  define STRCPY wcscpy
+# endif
+
+CHAR *SIMPLE_STRCPY (CHAR *, const CHAR *);
+
+IMPL (SIMPLE_STRCPY, 0)
+IMPL (STRCPY, 1)
+
+CHAR *
+SIMPLE_STRCPY (CHAR *dst, const CHAR *src)
+{
+  CHAR *ret = dst;
+  while ((*dst++ = *src++) != '\0');
+  return ret;
+}
+#endif
+
+typedef CHAR *(*proto_t) (CHAR *, const CHAR *);
+
+static void
+do_one_test (impl_t *impl, CHAR *dst, const CHAR *src,
+	     size_t len __attribute__((unused)))
+{
+  if (CALL (impl, dst, src) != STRCPY_RESULT (dst, len))
+    {
+      error (0, 0, "Wrong result in function %s %p %p", impl->name,
+	     CALL (impl, dst, src), STRCPY_RESULT (dst, len));
+      ret = 1;
+      return;
+    }
+
+  if (STRCMP (dst, src) != 0)
+    {
+      error (0, 0,
+	     "Wrong result in function %s dst \"%" sfmt "\" src \"%" sfmt "\"",
+	     impl->name, dst, src);
+      ret = 1;
+      return;
+    }
+
+  if (HP_TIMING_AVAIL)
+    {
+      hp_timing_t start __attribute ((unused));
+      hp_timing_t stop __attribute ((unused));;
+      hp_timing_t best_time = ~ (hp_timing_t) 0;
+      size_t i;
+
+      for (i = 0; i < 32; ++i)
+	{
+	  HP_TIMING_NOW (start);
+	  CALL (impl, dst, src);
+	  HP_TIMING_NOW (stop);
+	  HP_TIMING_BEST (best_time, start, stop);
+	}
+
+      printf ("\t%zd", (size_t) best_time);
+    }
+}
+
+static void
+do_test (size_t align1, size_t align2, size_t len, int max_char)
+{
+  size_t i;
+  CHAR *s1, *s2;
+/* For wcscpy: align1 and align2 here mean alignment not in bytes,
+   but in wchar_ts, in bytes it will equal to align * (sizeof (wchar_t))
+   len for wcschr here isn't in bytes but it's number of wchar_t symbols.  */
+  align1 &= 7;
+  if ((align1 + len) * sizeof(CHAR) >= page_size)
+    return;
+
+  align2 &= 7;
+  if ((align2 + len) * sizeof(CHAR) >= page_size)
+    return;
+
+  s1 = (CHAR *) (buf1) + align1;
+  s2 = (CHAR *) (buf2) + align2;
+
+  for (i = 0; i < len; i++)
+    s1[i] = 32 + 23 * i % (max_char - 32);
+  s1[len] = 0;
+
+  if (HP_TIMING_AVAIL)
+    printf ("Length %4zd, alignments in bytes %2zd/%2zd:", len, align1 * sizeof(CHAR), align2 * sizeof(CHAR));
+
+  FOR_EACH_IMPL (impl, 0)
+    do_one_test (impl, s2, s1, len);
+
+  if (HP_TIMING_AVAIL)
+    putchar ('\n');
+}
+
+int
+test_main (void)
+{
+  size_t i;
+
+  test_init ();
+
+  printf ("%23s", "");
+  FOR_EACH_IMPL (impl, 0)
+    printf ("\t%s", impl->name);
+  putchar ('\n');
+
+  for (i = 0; i < 16; ++i)
+    {
+      do_test (0, 0, i, SMALL_CHAR);
+      do_test (0, 0, i, BIG_CHAR);
+      do_test (0, i, i, SMALL_CHAR);
+      do_test (i, 0, i, BIG_CHAR);
+    }
+
+  for (i = 1; i < 8; ++i)
+    {
+      do_test (0, 0, 8 << i, SMALL_CHAR);
+      do_test (8 - i, 2 * i, 8 << i, SMALL_CHAR);
+    }
+
+  for (i = 1; i < 8; ++i)
+    {
+      do_test (i, 2 * i, 8 << i, SMALL_CHAR);
+      do_test (2 * i, i, 8 << i, BIG_CHAR);
+      do_test (i, i, 8 << i, SMALL_CHAR);
+      do_test (i, i, 8 << i, BIG_CHAR);
+    }
+
+  return ret;
+}
+
+#include "../test-skeleton.c"
@@ -0,0 +1,20 @@
+/* Measure IFUNC implementations of strcpy checking function.
+   Copyright (C) 2012-2013 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#define TEST_IFUNC 1
+#include "bench-strcpy_chk.c"
@@ -0,0 +1,262 @@
+/* Measure __strcpy_chk functions.
+   Copyright (C) 2013 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifndef STRCPY_RESULT
+# define STRCPY_RESULT(dst, len) dst
+# define TEST_MAIN
+# define TEST_NAME "strcpy_chk"
+# include "bench-string.h"
+
+/* This test case implicitly tests the availability of the __chk_fail
+   symbol, which is part of the public ABI and may be used
+   externally. */
+extern void __attribute__ ((noreturn)) __chk_fail (void);
+char *simple_strcpy_chk (char *, const char *, size_t);
+extern char *normal_strcpy (char *, const char *, size_t)
+  __asm ("strcpy");
+extern char *__strcpy_chk (char *, const char *, size_t);
+
+IMPL (simple_strcpy_chk, 0)
+IMPL (normal_strcpy, 1)
+IMPL (__strcpy_chk, 2)
+
+char *
+simple_strcpy_chk (char *dst, const char *src, size_t len)
+{
+  char *ret = dst;
+  if (! len)
+    __chk_fail ();
+  while ((*dst++ = *src++) != '\0')
+    if (--len == 0)
+      __chk_fail ();
+  return ret;
+}
+#endif
+
+#include <fcntl.h>
+#include <paths.h>
+#include <setjmp.h>
+#include <signal.h>
+
+volatile int chk_fail_ok;
+jmp_buf chk_fail_buf;
+
+static void
+handler (int sig)
+{
+  if (chk_fail_ok)
+    {
+      chk_fail_ok = 0;
+      longjmp (chk_fail_buf, 1);
+    }
+  else
+    _exit (127);
+}
+
+typedef char *(*proto_t) (char *, const char *, size_t);
+
+static void
+do_one_test (impl_t *impl, char *dst, const char *src,
+	     size_t len, size_t dlen)
+{
+  char *res;
+  if (dlen <= len)
+    {
+      if (impl->test == 1)
+	return;
+
+      chk_fail_ok = 1;
+      if (setjmp (chk_fail_buf) == 0)
+	{
+	  res = CALL (impl, dst, src, dlen);
+	  printf ("*** Function %s (%zd; %zd) did not __chk_fail\n",
+		  impl->name, len, dlen);
+	  chk_fail_ok = 0;
+	  ret = 1;
+	}
+      return;
+    }
+  else
+    res = CALL (impl, dst, src, dlen);
+
+  if (res != STRCPY_RESULT (dst, len))
+    {
+      printf ("Wrong result in function %s %p %p\n", impl->name,
+	      res, STRCPY_RESULT (dst, len));
+      ret = 1;
+      return;
+    }
+
+  if (strcmp (dst, src) != 0)
+    {
+      printf ("Wrong result in function %s dst \"%s\" src \"%s\"\n",
+	      impl->name, dst, src);
+      ret = 1;
+      return;
+    }
+
+  if (HP_TIMING_AVAIL)
+    {
+      hp_timing_t start __attribute ((unused));
+      hp_timing_t stop __attribute ((unused));;
+      hp_timing_t best_time = ~ (hp_timing_t) 0;
+      size_t i;
+
+      for (i = 0; i < 32; ++i)
+	{
+	  HP_TIMING_NOW (start);
+	  CALL (impl, dst, src, dlen);
+	  HP_TIMING_NOW (stop);
+	  HP_TIMING_BEST (best_time, start, stop);
+	}
+
+      printf ("\t%zd", (size_t) best_time);
+    }
+}
+
+static void
+do_test (size_t align1, size_t align2, size_t len, size_t dlen, int max_char)
+{
+  size_t i;
+  char *s1, *s2;
+
+  align1 &= 7;
+  if (align1 + len >= page_size)
+    return;
+
+  align2 &= 7;
+  if (align2 + len >= page_size)
+    return;
+
+  s1 = (char *) buf1 + align1;
+  s2 = (char *) buf2 + align2;
+
+  for (i = 0; i < len; i++)
+    s1[i] = 32 + 23 * i % (max_char - 32);
+  s1[len] = 0;
+
+  if (HP_TIMING_AVAIL && dlen > len)
+    printf ("Length %4zd, alignment %2zd/%2zd:", len, align1, align2);
+
+  FOR_EACH_IMPL (impl, 0)
+    do_one_test (impl, s2, s1, len, dlen);
+
+  if (HP_TIMING_AVAIL && dlen > len)
+    putchar ('\n');
+}
+
+int
+test_main (void)
+{
+  size_t i;
+
+  struct sigaction sa;
+  sa.sa_handler = handler;
+  sa.sa_flags = 0;
+  sigemptyset (&sa.sa_mask);
+
+  sigaction (SIGABRT, &sa, NULL);
+
+  /* Avoid all the buffer overflow messages on stderr.  */
+  int fd = open (_PATH_DEVNULL, O_WRONLY);
+  if (fd == -1)
+    close (STDERR_FILENO);
+  else
+    {
+      dup2 (fd, STDERR_FILENO);
+      close (fd);
+    }
+  setenv ("LIBC_FATAL_STDERR_", "1", 1);
+
+  test_init ();
+
+  printf ("%23s", "");
+  FOR_EACH_IMPL (impl, 0)
+    printf ("\t%s", impl->name);
+  putchar ('\n');
+
+  for (i = 0; i < 16; ++i)
+    {
+      do_test (0, 0, i, i + 1, 127);
+      do_test (0, 0, i, i + 1, 255);
+      do_test (0, i, i, i + 1, 127);
+      do_test (i, 0, i, i + 1, 255);
+    }
+
+  for (i = 1; i < 8; ++i)
+    {
+      do_test (0, 0, 8 << i, (8 << i) + 1, 127);
+      do_test (8 - i, 2 * i, (8 << i), (8 << i) + 1, 127);
+    }
+
+  for (i = 1; i < 8; ++i)
+    {
+      do_test (i, 2 * i, (8 << i), (8 << i) + 1, 127);
+      do_test (2 * i, i, (8 << i), (8 << i) + 1, 255);
+      do_test (i, i, (8 << i), (8 << i) + 1, 127);
+      do_test (i, i, (8 << i), (8 << i) + 1, 255);
+    }
+
+  for (i = 0; i < 16; ++i)
+    {
+      do_test (0, 0, i, i + 256, 127);
+      do_test (0, 0, i, i + 256, 255);
+      do_test (0, i, i, i + 256, 127);
+      do_test (i, 0, i, i + 256, 255);
+    }
+
+  for (i = 1; i < 8; ++i)
+    {
+      do_test (0, 0, 8 << i, (8 << i) + 256, 127);
+      do_test (8 - i, 2 * i, (8 << i), (8 << i) + 256, 127);
+    }
+
+  for (i = 1; i < 8; ++i)
+    {
+      do_test (i, 2 * i, (8 << i), (8 << i) + 256, 127);
+      do_test (2 * i, i, (8 << i), (8 << i) + 256, 255);
+      do_test (i, i, (8 << i), (8 << i) + 256, 127);
+      do_test (i, i, (8 << i), (8 << i) + 256, 255);
+    }
+
+  for (i = 0; i < 16; ++i)
+    {
+      do_test (0, 0, i, i, 127);
+      do_test (0, 0, i, i + 2, 255);
+      do_test (0, i, i, i + 3, 127);
+      do_test (i, 0, i, i + 4, 255);
+    }
+
+  for (i = 1; i < 8; ++i)
+    {
+      do_test (0, 0, 8 << i, (8 << i) - 15, 127);
+      do_test (8 - i, 2 * i, (8 << i), (8 << i) + 5, 127);
+    }
+
+  for (i = 1; i < 8; ++i)
+    {
+      do_test (i, 2 * i, (8 << i), (8 << i) + i, 127);
+      do_test (2 * i, i, (8 << i), (8 << i) + (i - 1), 255);
+      do_test (i, i, (8 << i), (8 << i) + i + 2, 127);
+      do_test (i, i, (8 << i), (8 << i) + i + 3, 255);
+    }
+
+  return 0;
+}
+
+#include "../test-skeleton.c"
@@ -0,0 +1,20 @@
+/* Measure IFUNC implementations of strcspn function.
+   Copyright (C) 2013 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#define TEST_IFUNC 1
+#include "bench-strcspn.c"
@@ -0,0 +1,59 @@
+/* Measure strcspn functions.
+   Copyright (C) 2013 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#define STRPBRK_RESULT(s, pos) (pos)
+#define RES_TYPE size_t
+#define TEST_MAIN
+#define TEST_NAME "strcspn"
+#include "bench-string.h"
+
+typedef size_t (*proto_t) (const char *, const char *);
+size_t simple_strcspn (const char *, const char *);
+size_t stupid_strcspn (const char *, const char *);
+
+IMPL (stupid_strcspn, 0)
+IMPL (simple_strcspn, 0)
+IMPL (strcspn, 1)
+
+size_t
+simple_strcspn (const char *s, const char *rej)
+{
+  const char *r, *str = s;
+  char c;
+
+  while ((c = *s++) != '\0')
+    for (r = rej; *r != '\0'; ++r)
+      if (*r == c)
+	return s - str - 1;
+  return s - str - 1;
+}
+
+size_t
+stupid_strcspn (const char *s, const char *rej)
+{
+  size_t ns = strlen (s), nrej = strlen (rej);
+  size_t i, j;
+
+  for (i = 0; i < ns; ++i)
+    for (j = 0; j < nrej; ++j)
+      if (s[i] == rej[j])
+	return i;
+  return i;
+}
+
+#include "bench-strpbrk.c"
@@ -0,0 +1,212 @@
+/* Measure string and memory functions.
+   Copyright (C) 2013 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <sys/cdefs.h>
+
+typedef struct
+{
+  const char *name;
+  void (*fn) (void);
+  long test;
+} impl_t;
+extern impl_t __start_impls[], __stop_impls[];
+
+#define IMPL(name, test) \
+  impl_t tst_ ## name							\
+  __attribute__ ((section ("impls"), aligned (sizeof (void *))))	\
+       = { __STRING (name), (void (*) (void))name, test };
+
+#ifdef TEST_MAIN
+
+# ifndef _GNU_SOURCE
+#  define _GNU_SOURCE
+# endif
+
+# undef __USE_STRING_INLINES
+
+# include <stdio.h>
+# include <stdlib.h>
+# include <string.h>
+# include <sys/mman.h>
+# include <sys/param.h>
+# include <unistd.h>
+# include <fcntl.h>
+# include <error.h>
+# include <errno.h>
+# include <time.h>
+# include <ifunc-impl-list.h>
+# define GL(x) _##x
+# define GLRO(x) _##x
+# include <hp-timing.h>
+
+
+# define TEST_FUNCTION test_main ()
+# define TIMEOUT (4 * 60)
+# define OPT_ITERATIONS 10000
+# define OPT_RANDOM 10001
+# define OPT_SEED 10002
+
+unsigned char *buf1, *buf2;
+int ret, do_srandom;
+unsigned int seed;
+size_t page_size;
+
+hp_timing_t _dl_hp_timing_overhead;
+
+# ifndef ITERATIONS
+size_t iterations = 100000;
+#  define ITERATIONS_OPTIONS \
+     { "iterations", required_argument, NULL, OPT_ITERATIONS },
+#  define ITERATIONS_PROCESS \
+     case OPT_ITERATIONS:						      \
+       iterations = strtoul (optarg, NULL, 0);				      \
+       break;
+#  define ITERATIONS iterations
+# else
+#  define ITERATIONS_OPTIONS
+#  define ITERATIONS_PROCESS
+# endif
+
+# define CMDLINE_OPTIONS ITERATIONS_OPTIONS \
+    { "random", no_argument, NULL, OPT_RANDOM },			      \
+    { "seed", required_argument, NULL, OPT_SEED },
+# define CMDLINE_PROCESS ITERATIONS_PROCESS \
+    case OPT_RANDOM:							      \
+      {									      \
+	int fdr = open ("/dev/urandom", O_RDONLY);			      \
+									      \
+	if (fdr < 0 || read (fdr, &seed, sizeof(seed)) != sizeof (seed))      \
+	  seed = time (NULL);						      \
+	if (fdr >= 0)							      \
+	  close (fdr);							      \
+	do_srandom = 1;							      \
+	break;								      \
+      }									      \
+									      \
+    case OPT_SEED:							      \
+      seed = strtoul (optarg, NULL, 0);					      \
+      do_srandom = 1;							      \
+      break;
+
+# define CALL(impl, ...)	\
+    (* (proto_t) (impl)->fn) (__VA_ARGS__)
+
+# if defined TEST_IFUNC && defined TEST_NAME
+/* Increase size of FUNC_LIST if assert is triggered at run-time.  */
+static struct libc_ifunc_impl func_list[32];
+static int func_count;
+static int impl_count = -1;
+static impl_t *impl_array;
+
+#  define FOR_EACH_IMPL(impl, notall) \
+     impl_t *impl;							      \
+     int count;								      \
+     if (impl_count == -1)						      \
+       {								      \
+	 impl_count = 0;						      \
+	 if (func_count != 0)						      \
+	   {								      \
+	     int f;							      \
+	     impl_t *skip = NULL, *a;					      \
+	     for (impl = __start_impls; impl < __stop_impls; ++impl)	      \
+	       if (strcmp (impl->name, TEST_NAME) == 0)			      \
+		 skip = impl;						      \
+	       else							      \
+		 impl_count++;						      \
+	     a = impl_array = malloc ((impl_count + func_count) *	      \
+				   sizeof (impl_t));			      \
+	     for (impl = __start_impls; impl < __stop_impls; ++impl)	      \
+	       if (impl != skip)					      \
+		 *a++ = *impl;						      \
+	     for (f = 0; f < func_count; f++)				      \
+	       if (func_list[f].usable)					      \
+		 {							      \
+		   a->name = func_list[f].name;				      \
+		   a->fn = func_list[f].fn;				      \
+		   a->test = 1;						      \
+		   a++;							      \
+		 }							      \
+	     impl_count = a - impl_array;				      \
+	   }								      \
+	 else								      \
+	   {								      \
+	     impl_count = __stop_impls - __start_impls;			      \
+	     impl_array = __start_impls;				      \
+	   }								      \
+       }								      \
+     impl = impl_array;							      \
+     for (count = 0; count < impl_count; ++count, ++impl)		      \
+       if (!notall || impl->test)
+# else /* ! (defined TEST_IFUNC && defined TEST_NAME) */
+#  define FOR_EACH_IMPL(impl, notall) \
+     for (impl_t *impl = __start_impls; impl < __stop_impls; ++impl)	      \
+       if (!notall || impl->test)
+# endif /* ! (defined TEST_IFUNC && defined TEST_NAME) */
+
+# define HP_TIMING_BEST(best_time, start, end)	\
+    do									      \
+      {									      \
+	hp_timing_t tmptime;						      \
+	HP_TIMING_DIFF (tmptime, start + _dl_hp_timing_overhead, end);	      \
+	if (best_time > tmptime)					      \
+	  best_time = tmptime;						      \
+      }									      \
+    while (0)
+
+# ifndef BUF1PAGES
+#  define BUF1PAGES 1
+# endif
+
+static void
+test_init (void)
+{
+# if defined TEST_IFUNC && defined TEST_NAME
+  func_count = __libc_ifunc_impl_list (TEST_NAME, func_list,
+				       (sizeof func_list
+					/ sizeof func_list[0]));
+# endif
+
+  page_size = 2 * getpagesize ();
+# ifdef MIN_PAGE_SIZE
+  if (page_size < MIN_PAGE_SIZE)
+    page_size = MIN_PAGE_SIZE;
+# endif
+  buf1 = mmap (0, (BUF1PAGES + 1) * page_size, PROT_READ | PROT_WRITE,
+	       MAP_PRIVATE | MAP_ANON, -1, 0);
+  if (buf1 == MAP_FAILED)
+    error (EXIT_FAILURE, errno, "mmap failed");
+  if (mprotect (buf1 + BUF1PAGES * page_size, page_size, PROT_NONE))
+    error (EXIT_FAILURE, errno, "mprotect failed");
+  buf2 = mmap (0, 2 * page_size, PROT_READ | PROT_WRITE,
+	       MAP_PRIVATE | MAP_ANON, -1, 0);
+  if (buf2 == MAP_FAILED)
+    error (EXIT_FAILURE, errno, "mmap failed");
+  if (mprotect (buf2 + page_size, page_size, PROT_NONE))
+    error (EXIT_FAILURE, errno, "mprotect failed");
+  HP_TIMING_DIFF_INIT ();
+  if (do_srandom)
+    {
+      printf ("Setting seed to 0x%x\n", seed);
+      srandom (seed);
+    }
+
+  memset (buf1, 0xa5, BUF1PAGES * page_size);
+  memset (buf2, 0x5a, page_size);
+}
+
+#endif /* TEST_MAIN */
@@ -0,0 +1,20 @@
+/* Measure IFUNC implementations of strlen function.
+   Copyright (C) 2013 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#define TEST_IFUNC 1
+#include "bench-strlen.c"
@@ -0,0 +1,149 @@
+/* Measure STRLEN functions.
+   Copyright (C) 2013 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#define TEST_MAIN
+#ifndef WIDE
+# define TEST_NAME "strlen"
+#else
+# define TEST_NAME "wcslen"
+#endif
+#include "bench-string.h"
+
+#ifndef WIDE
+# define STRLEN strlen
+# define CHAR char
+# define MAX_CHAR CHAR_MAX
+#else
+# include <wchar.h>
+# define STRLEN wcslen
+# define CHAR wchar_t
+# define MAX_CHAR WCHAR_MAX
+#endif
+
+typedef size_t (*proto_t) (const CHAR *);
+
+size_t
+simple_STRLEN (const CHAR *s)
+{
+  const CHAR *p;
+
+  for (p = s; *p; ++p);
+  return p - s;
+}
+
+#ifndef WIDE
+size_t
+builtin_strlen (const CHAR *p)
+{
+  return __builtin_strlen (p);
+}
+IMPL (builtin_strlen, 0)
+#endif
+
+IMPL (simple_STRLEN, 0)
+IMPL (STRLEN, 1)
+
+
+static void
+do_one_test (impl_t *impl, const CHAR *s, size_t exp_len)
+{
+  size_t len = CALL (impl, s);
+  if (len != exp_len)
+    {
+      error (0, 0, "Wrong result in function %s %zd %zd", impl->name,
+	     len, exp_len);
+      ret = 1;
+      return;
+    }
+
+  if (HP_TIMING_AVAIL)
+    {
+      hp_timing_t start __attribute ((unused));
+      hp_timing_t stop __attribute ((unused));
+      hp_timing_t best_time = ~ (hp_timing_t) 0;
+      size_t i;
+
+      for (i = 0; i < 32; ++i)
+	{
+	  HP_TIMING_NOW (start);
+	  CALL (impl, s);
+	  HP_TIMING_NOW (stop);
+	  HP_TIMING_BEST (best_time, start, stop);
+	}
+
+      printf ("\t%zd", (size_t) best_time);
+    }
+}
+
+static void
+do_test (size_t align, size_t len)
+{
+  size_t i;
+
+  align &= 63;
+  if (align + sizeof(CHAR) * len >= page_size)
+    return;
+
+  CHAR *buf = (CHAR *) (buf1);
+
+  for (i = 0; i < len; ++i)
+    buf[align + i] = 1 + 11111 * i % MAX_CHAR;
+  buf[align + len] = 0;
+
+  if (HP_TIMING_AVAIL)
+    printf ("Length %4zd, alignment %2zd:", len, align);
+
+  FOR_EACH_IMPL (impl, 0)
+    do_one_test (impl, (CHAR *) (buf + align), len);
+
+  if (HP_TIMING_AVAIL)
+    putchar ('\n');
+}
+
+int
+test_main (void)
+{
+  size_t i;
+
+  test_init ();
+
+  printf ("%20s", "");
+  FOR_EACH_IMPL (impl, 0)
+    printf ("\t%s", impl->name);
+  putchar ('\n');
+
+  /* Checking with only 4 * N alignments for wcslen, other alignments are wrong for wchar_t type arrays*/
+
+  for (i = 1; i < 8; ++i)
+  {
+    do_test (sizeof(CHAR) * i, i);
+    do_test (0, i);
+  }
+
+  for (i = 2; i <= 12; ++i)
+    {
+      do_test (0, 1 << i);
+      do_test (sizeof(CHAR) * 7, 1 << i);
+      do_test (sizeof(CHAR) * i, 1 << i);
+      do_test (sizeof(CHAR) * i, (size_t)((1 << i) / 1.5));
+    }
+
+  return ret;
+}
+
+#include "../test-skeleton.c"
@@ -0,0 +1,20 @@
+/* Measure IFUNC implementations of strncasecmp function.
+   Copyright (C) 2013 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#define TEST_IFUNC 1
+#include "bench-strncasecmp.c"
@@ -0,0 +1,213 @@
+/* Measure strncasecmp functions.
+   Copyright (C) 2013 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <ctype.h>
+#define TEST_MAIN
+#define TEST_NAME "strncasecmp"
+#include "bench-string.h"
+
+typedef int (*proto_t) (const char *, const char *, size_t);
+static int simple_strncasecmp (const char *, const char *, size_t);
+static int stupid_strncasecmp (const char *, const char *, size_t);
+
+IMPL (stupid_strncasecmp, 0)
+IMPL (simple_strncasecmp, 0)
+IMPL (strncasecmp, 1)
+
+static int
+simple_strncasecmp (const char *s1, const char *s2, size_t n)
+{
+  int ret;
+
+  if (n == 0)
+    return 0;
+
+  while ((ret = ((unsigned char) tolower (*s1)
+		 - (unsigned char) tolower (*s2))) == 0
+	 && *s1++)
+    {
+      if (--n == 0)
+	return 0;
+      ++s2;
+    }
+  return ret;
+}
+
+static int
+stupid_strncasecmp (const char *s1, const char *s2, size_t max)
+{
+  size_t ns1 = strlen (s1) + 1;
+  size_t ns2 = strlen (s2) + 1;
+  size_t n = ns1 < ns2 ? ns1 : ns2;
+  if (n > max)
+    n = max;
+  int ret = 0;
+
+  while (n--)
+    {
+      if ((ret = ((unsigned char) tolower (*s1)
+		  - (unsigned char) tolower (*s2))) != 0)
+	break;
+      ++s1;
+      ++s2;
+    }
+  return ret;
+}
+
+static void
+do_one_test (impl_t *impl, const char *s1, const char *s2, size_t n,
+	     int exp_result)
+{
+  if (HP_TIMING_AVAIL)
+    {
+      hp_timing_t start __attribute ((unused));
+      hp_timing_t stop __attribute ((unused));
+      hp_timing_t best_time = ~ (hp_timing_t) 0;
+      size_t i;
+
+      for (i = 0; i < 32; ++i)
+	{
+	  HP_TIMING_NOW (start);
+	  CALL (impl, s1, s2, n);
+	  HP_TIMING_NOW (stop);
+	  HP_TIMING_BEST (best_time, start, stop);
+	}
+
+      printf ("\t%zd", (size_t) best_time);
+    }
+}
+
+static void
+do_test (size_t align1, size_t align2, size_t n, size_t len, int max_char,
+	 int exp_result)
+{
+  size_t i;
+  char *s1, *s2;
+
+  if (len == 0)
+    return;
+
+  align1 &= 7;
+  if (align1 + len + 1 >= page_size)
+    return;
+
+  align2 &= 7;
+  if (align2 + len + 1 >= page_size)
+    return;
+
+  s1 = (char *) (buf1 + align1);
+  s2 = (char *) (buf2 + align2);
+
+  for (i = 0; i < len; i++)
+    {
+      s1[i] = toupper (1 + 23 * i % max_char);
+      s2[i] = tolower (s1[i]);
+    }
+
+  s1[len] = s2[len] = 0;
+  s1[len + 1] = 23;
+  s2[len + 1] = 24 + exp_result;
+  if ((s2[len - 1] == 'z' && exp_result == -1)
+      || (s2[len - 1] == 'a' && exp_result == 1))
+    s1[len - 1] += exp_result;
+  else
+    s2[len - 1] -= exp_result;
+
+  if (HP_TIMING_AVAIL)
+    printf ("Length %4zd, alignment %2zd/%2zd:", len, align1, align2);
+
+  FOR_EACH_IMPL (impl, 0)
+    do_one_test (impl, s1, s2, n, exp_result);
+
+  if (HP_TIMING_AVAIL)
+    putchar ('\n');
+}
+
+int
+test_main (void)
+{
+  size_t i;
+
+  test_init ();
+
+  printf ("%23s", "");
+  FOR_EACH_IMPL (impl, 0)
+    printf ("\t%s", impl->name);
+  putchar ('\n');
+
+  for (i = 1; i < 16; ++i)
+    {
+      do_test (i, i, i - 1, i, 127, 0);
+
+      do_test (i, i, i, i, 127, 0);
+      do_test (i, i, i, i, 127, 1);
+      do_test (i, i, i, i, 127, -1);
+
+      do_test (i, i, i + 1, i, 127, 0);
+      do_test (i, i, i + 1, i, 127, 1);
+      do_test (i, i, i + 1, i, 127, -1);
+    }
+
+  for (i = 1; i < 10; ++i)
+    {
+      do_test (0, 0, (2 << i) - 1, 2 << i, 127, 0);
+      do_test (0, 0, 2 << i, 2 << i, 254, 0);
+      do_test (0, 0, (2 << i) + 1, 2 << i, 127, 0);
+
+      do_test (0, 0, (2 << i) + 1, 2 << i, 254, 0);
+
+      do_test (0, 0, 2 << i, 2 << i, 127, 1);
+      do_test (0, 0, (2 << i) + 10, 2 << i, 127, 1);
+
+      do_test (0, 0, 2 << i, 2 << i, 254, 1);
+      do_test (0, 0, (2 << i) + 10, 2 << i, 254, 1);
+
+      do_test (0, 0, 2 << i, 2 << i, 127, -1);
+      do_test (0, 0, (2 << i) + 10, 2 << i, 127, -1);
+
+      do_test (0, 0, 2 << i, 2 << i, 254, -1);
+      do_test (0, 0, (2 << i) + 10, 2 << i, 254, -1);
+    }
+
+  for (i = 1; i < 8; ++i)
+    {
+      do_test (i, 2 * i, (8 << i) - 1, 8 << i, 127, 0);
+      do_test (i, 2 * i, 8 << i, 8 << i, 127, 0);
+      do_test (i, 2 * i, (8 << i) + 100, 8 << i, 127, 0);
+
+      do_test (2 * i, i, (8 << i) - 1, 8 << i, 254, 0);
+      do_test (2 * i, i, 8 << i, 8 << i, 254, 0);
+      do_test (2 * i, i, (8 << i) + 100, 8 << i, 254, 0);
+
+      do_test (i, 2 * i, 8 << i, 8 << i, 127, 1);
+      do_test (i, 2 * i, (8 << i) + 100, 8 << i, 127, 1);
+
+      do_test (2 * i, i, 8 << i, 8 << i, 254, 1);
+      do_test (2 * i, i, (8 << i) + 100, 8 << i, 254, 1);
+
+      do_test (i, 2 * i, 8 << i, 8 << i, 127, -1);
+      do_test (i, 2 * i, (8 << i) + 100, 8 << i, 127, -1);
+
+      do_test (2 * i, i, 8 << i, 8 << i, 254, -1);
+      do_test (2 * i, i, (8 << i) + 100, 8 << i, 254, -1);
+    }
+
+  return ret;
+}
+
+#include "../test-skeleton.c"
@@ -0,0 +1,20 @@
+/* Measure IFUNC implementations of strncat function.
+   Copyright (C) 2013 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#define TEST_IFUNC 1
+#include "bench-strncat.c"
@@ -0,0 +1,168 @@
+/* Measure strncat functions.
+   Copyright (C) 2013 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#define TEST_MAIN
+#define TEST_NAME "strncat"
+#include "bench-string.h"
+
+typedef char *(*proto_t) (char *, const char *, size_t);
+char *stupid_strncat (char *, const char *, size_t);
+char *simple_strncat (char *, const char *, size_t);
+
+IMPL (stupid_strncat, 0)
+IMPL (strncat, 2)
+
+char *
+stupid_strncat (char *dst, const char *src, size_t n)
+{
+  char *ret = dst;
+  while (*dst++ != '\0');
+  --dst;
+  while (n--)
+    if ( (*dst++ = *src++) == '\0')
+      return ret;
+  *dst = '\0';
+  return ret;
+}
+
+static void
+do_one_test (impl_t *impl, char *dst, const char *src, size_t n)
+{
+  size_t k = strlen (dst);
+  if (CALL (impl, dst, src, n) != dst)
+    {
+      error (0, 0, "Wrong result in function %s %p != %p", impl->name,
+	     CALL (impl, dst, src, n), dst);
+      ret = 1;
+      return;
+    }
+
+  size_t len = strlen (src);
+  if (memcmp (dst + k, src, len + 1 > n ? n : len + 1) != 0)
+    {
+      error (0, 0, "Incorrect cancatination in function %s",
+	     impl->name);
+      ret = 1;
+      return;
+    }
+  if (n < len && dst[k + n] != '\0')
+    {
+      error (0, 0, "There is no zero in the end of output string in %s",
+	     impl->name);
+      ret = 1;
+      return;
+    }
+  if (HP_TIMING_AVAIL)
+    {
+      hp_timing_t start __attribute ((unused));
+      hp_timing_t stop __attribute ((unused));
+      hp_timing_t best_time = ~ (hp_timing_t) 0;
+      size_t i;
+
+      for (i = 0; i < 32; ++i)
+	{
+	  dst[k] = '\0';
+	  HP_TIMING_NOW (start);
+	  CALL (impl, dst, src, n);
+	  HP_TIMING_NOW (stop);
+	  HP_TIMING_BEST (best_time, start, stop);
+	}
+
+      printf ("\t%zd", (size_t) best_time);
+    }
+}
+
+static void
+do_test (size_t align1, size_t align2, size_t len1, size_t len2,
+	 size_t n, int max_char)
+{
+  size_t i;
+  char *s1, *s2;
+
+  align1 &= 7;
+  if (align1 + len1 >= page_size)
+    return;
+  if (align1 + n > page_size)
+    return;
+  align2 &= 7;
+  if (align2 + len1 + len2 >= page_size)
+    return;
+  if (align2 + len1 + n > page_size)
+    return;
+  s1 = (char *) (buf1 + align1);
+  s2 = (char *) (buf2 + align2);
+
+  for (i = 0; i < len1; ++i)
+    s1[i] = 32 + 23 * i % (max_char - 32);
+  s1[len1] = '\0';
+
+  for (i = 0; i < len2; i++)
+    s2[i] = 32 + 23 * i % (max_char - 32);
+
+  if (HP_TIMING_AVAIL)
+    printf ("Length %4zd/%4zd, alignment %2zd/%2zd, N %4zd:",
+	    len1, len2, align1, align2, n);
+
+  FOR_EACH_IMPL (impl, 0)
+    {
+      s2[len2] = '\0';
+      do_one_test (impl, s2, s1, n);
+    }
+
+  if (HP_TIMING_AVAIL)
+    putchar ('\n');
+}
+
+int
+main (void)
+{
+  size_t i, n;
+
+  test_init ();
+
+  printf ("%28s", "");
+  FOR_EACH_IMPL (impl, 0)
+    printf ("\t%s", impl->name);
+  putchar ('\n');
+
+  for (n = 2; n <= 2048; n*=4)
+    {
+      do_test (0, 2, 2, 2, n, 127);
+      do_test (0, 0, 4, 4, n, 127);
+      do_test (4, 0, 4, 4, n, 255);
+      do_test (0, 0, 8, 8, n, 127);
+      do_test (0, 8, 8, 8, n, 127);
+
+      for (i = 1; i < 8; ++i)
+	{
+	  do_test (0, 0, 8 << i, 8 << i, n, 127);
+	  do_test (8 - i, 2 * i, 8 << i, 8 << i, n, 127);
+	  do_test (0, 0, 8 << i, 2 << i, n, 127);
+	  do_test (8 - i, 2 * i, 8 << i, 2 << i, n, 127);
+	}
+
+      for (i = 1; i < 8; ++i)
+	{
+	  do_test (i, 2 * i, 8 << i, 1, n, 127);
+	  do_test (2 * i, i, 8 << i, 1, n, 255);
+	  do_test (i, i, 8 << i, 10, n, 127);
+	}
+    }
+
+  return ret;
+}
@@ -0,0 +1,20 @@
+/* Measure IFUNC implementations of strncmp function.
+   Copyright (C) 2013 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#define TEST_IFUNC 1
+#include "bench-strncmp.c"
@@ -0,0 +1,249 @@
+/* Measure strncmp functions.
+   Copyright (C) 2013 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#define TEST_MAIN
+#define TEST_NAME "strncmp"
+#include "bench-string.h"
+
+typedef int (*proto_t) (const char *, const char *, size_t);
+int simple_strncmp (const char *, const char *, size_t);
+int stupid_strncmp (const char *, const char *, size_t);
+
+IMPL (stupid_strncmp, 0)
+IMPL (simple_strncmp, 0)
+IMPL (strncmp, 1)
+
+int
+simple_strncmp (const char *s1, const char *s2, size_t n)
+{
+  int ret = 0;
+
+  while (n-- && (ret = *(unsigned char *) s1 - * (unsigned char *) s2++) == 0
+	 && *s1++);
+  return ret;
+}
+
+int
+stupid_strncmp (const char *s1, const char *s2, size_t n)
+{
+  size_t ns1 = strnlen (s1, n) + 1, ns2 = strnlen (s2, n) + 1;
+  int ret = 0;
+
+  n = ns1 < n ? ns1 : n;
+  n = ns2 < n ? ns2 : n;
+  while (n-- && (ret = *(unsigned char *) s1++ - * (unsigned char *) s2++) == 0);
+  return ret;
+}
+
+static void
+do_one_test (impl_t *impl, const char *s1, const char *s2, size_t n,
+	     int exp_result)
+{
+  if (HP_TIMING_AVAIL)
+    {
+      hp_timing_t start __attribute ((unused));
+      hp_timing_t stop __attribute ((unused));
+      hp_timing_t best_time = ~ (hp_timing_t) 0;
+      size_t i;
+
+      for (i = 0; i < 32; ++i)
+	{
+	  HP_TIMING_NOW (start);
+	  CALL (impl, s1, s2, n);
+	  HP_TIMING_NOW (stop);
+	  HP_TIMING_BEST (best_time, start, stop);
+	}
+
+      printf ("\t%zd", (size_t) best_time);
+    }
+}
+
+static void
+do_test_limit (size_t align1, size_t align2, size_t len, size_t n, int max_char,
+	 int exp_result)
+{
+  size_t i, align_n;
+  char *s1, *s2;
+
+  if (n == 0)
+    {
+      s1 = (char*)(buf1 + page_size);
+      s2 = (char*)(buf2 + page_size);
+      if (HP_TIMING_AVAIL)
+	printf ("Length %4zd/%4zd:", len, n);
+
+      FOR_EACH_IMPL (impl, 0)
+	do_one_test (impl, s1, s2, n, 0);
+
+      if (HP_TIMING_AVAIL)
+	putchar ('\n');
+
+      return;
+    }
+
+  align1 &= 15;
+  align2 &= 15;
+  align_n = (page_size - n) & 15;
+
+  s1 = (char*)(buf1 + page_size - n);
+  s2 = (char*)(buf2 + page_size - n);
+
+  if (align1 < align_n)
+    s1 -= (align_n - align1);
+
+  if (align2 < align_n)
+    s2 -= (align_n - align2);
+
+  for (i = 0; i < n; i++)
+    s1[i] = s2[i] = 1 + 23 * i % max_char;
+
+  if (len < n)
+    {
+      s1[len] = 0;
+      s2[len] = 0;
+      if (exp_result < 0)
+	s2[len] = 32;
+      else if (exp_result > 0)
+	s1[len] = 64;
+    }
+
+  if (HP_TIMING_AVAIL)
+    printf ("Length %4zd/%4zd, alignment %2zd/%2zd:", len, n, align1, align2);
+
+  FOR_EACH_IMPL (impl, 0)
+    do_one_test (impl, s1, s2, n, exp_result);
+
+  if (HP_TIMING_AVAIL)
+    putchar ('\n');
+}
+
+static void
+do_test (size_t align1, size_t align2, size_t len, size_t n, int max_char,
+	 int exp_result)
+{
+  size_t i;
+  char *s1, *s2;
+
+  if (n == 0)
+    return;
+
+  align1 &= 7;
+  if (align1 + n + 1 >= page_size)
+    return;
+
+  align2 &= 7;
+  if (align2 + n + 1 >= page_size)
+    return;
+
+  s1 = (char*)(buf1 + align1);
+  s2 = (char*)(buf2 + align2);
+
+  for (i = 0; i < n; i++)
+    s1[i] = s2[i] = 1 + 23 * i % max_char;
+
+  s1[n] = 24 + exp_result;
+  s2[n] = 23;
+  s1[len] = 0;
+  s2[len] = 0;
+  if (exp_result < 0)
+    s2[len] = 32;
+  else if (exp_result > 0)
+    s1[len] = 64;
+  if (len >= n)
+    s2[n - 1] -= exp_result;
+
+  if (HP_TIMING_AVAIL)
+    printf ("Length %4zd/%4zd, alignment %2zd/%2zd:", len, n, align1, align2);
+
+  FOR_EACH_IMPL (impl, 0)
+    do_one_test (impl, (char*)s1, (char*)s2, n, exp_result);
+
+  if (HP_TIMING_AVAIL)
+    putchar ('\n');
+}
+
+int
+test_main (void)
+{
+  size_t i;
+
+  test_init ();
+
+  printf ("%23s", "");
+  FOR_EACH_IMPL (impl, 0)
+    printf ("\t%s", impl->name);
+  putchar ('\n');
+
+  for (i =0; i < 16; ++i)
+    {
+      do_test (0, 0, 8, i, 127, 0);
+      do_test (0, 0, 8, i, 127, -1);
+      do_test (0, 0, 8, i, 127, 1);
+      do_test (i, i, 8, i, 127, 0);
+      do_test (i, i, 8, i, 127, 1);
+      do_test (i, i, 8, i, 127, -1);
+      do_test (i, 2 * i, 8, i, 127, 0);
+      do_test (2 * i, i, 8, i, 127, 1);
+      do_test (i, 3 * i, 8, i, 127, -1);
+      do_test (0, 0, 8, i, 255, 0);
+      do_test (0, 0, 8, i, 255, -1);
+      do_test (0, 0, 8, i, 255, 1);
+      do_test (i, i, 8, i, 255, 0);
+      do_test (i, i, 8, i, 255, 1);
+      do_test (i, i, 8, i, 255, -1);
+      do_test (i, 2 * i, 8, i, 255, 0);
+      do_test (2 * i, i, 8, i, 255, 1);
+      do_test (i, 3 * i, 8, i, 255, -1);
+    }
+
+  for (i = 1; i < 8; ++i)
+    {
+      do_test (0, 0, 8 << i, 16 << i, 127, 0);
+      do_test (0, 0, 8 << i, 16 << i, 127, 1);
+      do_test (0, 0, 8 << i, 16 << i, 127, -1);
+      do_test (0, 0, 8 << i, 16 << i, 255, 0);
+      do_test (0, 0, 8 << i, 16 << i, 255, 1);
+      do_test (0, 0, 8 << i, 16 << i, 255, -1);
+      do_test (8 - i, 2 * i, 8 << i, 16 << i, 127, 0);
+      do_test (8 - i, 2 * i, 8 << i, 16 << i, 127, 1);
+      do_test (2 * i, i, 8 << i, 16 << i, 255, 0);
+      do_test (2 * i, i, 8 << i, 16 << i, 255, 1);
+    }
+
+  do_test_limit (0, 0, 0, 0, 127, 0);
+  do_test_limit (4, 0, 21, 20, 127, 0);
+  do_test_limit (0, 4, 21, 20, 127, 0);
+  do_test_limit (8, 0, 25, 24, 127, 0);
+  do_test_limit (0, 8, 25, 24, 127, 0);
+
+  for (i = 0; i < 8; ++i)
+    {
+      do_test_limit (0, 0, 17 - i, 16 - i, 127, 0);
+      do_test_limit (0, 0, 17 - i, 16 - i, 255, 0);
+      do_test_limit (0, 0, 15 - i, 16 - i, 127, 0);
+      do_test_limit (0, 0, 15 - i, 16 - i, 127, 1);
+      do_test_limit (0, 0, 15 - i, 16 - i, 127, -1);
+      do_test_limit (0, 0, 15 - i, 16 - i, 255, 0);
+      do_test_limit (0, 0, 15 - i, 16 - i, 255, 1);
+      do_test_limit (0, 0, 15 - i, 16 - i, 255, -1);
+    }
+
+  return ret;
+}
+
+#include "../test-skeleton.c"
@@ -0,0 +1,20 @@
+/* Measure IFUNC implementations of strncpy function.
+   Copyright (C) 2013 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#define TEST_IFUNC 1
+#include "bench-strncpy.c"
@@ -0,0 +1,180 @@
+/* Measure strncpy functions.
+   Copyright (C) 2013 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifndef STRNCPY_RESULT
+# define STRNCPY_RESULT(dst, len, n) dst
+# define TEST_MAIN
+# define TEST_NAME "strncpy"
+# include "bench-string.h"
+
+char *simple_strncpy (char *, const char *, size_t);
+char *stupid_strncpy (char *, const char *, size_t);
+
+IMPL (stupid_strncpy, 0)
+IMPL (simple_strncpy, 0)
+IMPL (strncpy, 1)
+
+char *
+simple_strncpy (char *dst, const char *src, size_t n)
+{
+  char *ret = dst;
+  while (n--)
+    if ((*dst++ = *src++) == '\0')
+      {
+	while (n--)
+	  *dst++ = '\0';
+	return ret;
+      }
+  return ret;
+}
+
+char *
+stupid_strncpy (char *dst, const char *src, size_t n)
+{
+  size_t nc = strnlen (src, n);
+  size_t i;
+
+  for (i = 0; i < nc; ++i)
+    dst[i] = src[i];
+  for (; i < n; ++i)
+    dst[i] = '\0';
+  return dst;
+}
+#endif
+
+typedef char *(*proto_t) (char *, const char *, size_t);
+
+static void
+do_one_test (impl_t *impl, char *dst, const char *src, size_t len, size_t n)
+{
+  if (CALL (impl, dst, src, n) != STRNCPY_RESULT (dst, len, n))
+    {
+      error (0, 0, "Wrong result in function %s %p %p", impl->name,
+	     CALL (impl, dst, src, n), dst);
+      ret = 1;
+      return;
+    }
+
+  if (memcmp (dst, src, len > n ? n : len) != 0)
+    {
+      error (0, 0, "Wrong result in function %s", impl->name);
+      ret = 1;
+      return;
+    }
+
+  if (n > len)
+    {
+      size_t i;
+
+      for (i = len; i < n; ++i)
+	if (dst [i] != '\0')
+	  {
+	    error (0, 0, "Wrong result in function %s", impl->name);
+	    ret = 1;
+	    return;
+	  }
+    }
+
+  if (HP_TIMING_AVAIL)
+    {
+      hp_timing_t start __attribute__ ((unused));
+      hp_timing_t stop __attribute__ ((unused));
+      hp_timing_t best_time = ~ (hp_timing_t) 0;
+      size_t i;
+
+      for (i = 0; i < 32; ++i)
+	{
+	  HP_TIMING_NOW (start);
+	  CALL (impl, dst, src, n);
+	  HP_TIMING_NOW (stop);
+	  HP_TIMING_BEST (best_time, start, stop);
+	}
+
+      printf ("\t%zd", (size_t) best_time);
+    }
+}
+
+static void
+do_test (size_t align1, size_t align2, size_t len, size_t n, int max_char)
+{
+  size_t i;
+  char *s1, *s2;
+
+  align1 &= 7;
+  if (align1 + len >= page_size)
+    return;
+
+  align2 &= 7;
+  if (align2 + len >= page_size)
+    return;
+
+  s1 = (char *) (buf1 + align1);
+  s2 = (char *) (buf2 + align2);
+
+  for (i = 0; i < len; ++i)
+    s1[i] = 32 + 23 * i % (max_char - 32);
+  s1[len] = 0;
+  for (i = len + 1; i + align1 < page_size && i < len + 64; ++i)
+    s1[i] = 32 + 32 * i % (max_char - 32);
+
+  if (HP_TIMING_AVAIL)
+    printf ("Length %4zd, n %4zd, alignment %2zd/%2zd:", len, n, align1, align2);
+
+  FOR_EACH_IMPL (impl, 0)
+    do_one_test (impl, s2, s1, len, n);
+
+  if (HP_TIMING_AVAIL)
+    putchar ('\n');
+}
+
+int
+test_main (void)
+{
+  size_t i;
+
+  test_init ();
+
+  printf ("%28s", "");
+  FOR_EACH_IMPL (impl, 0)
+    printf ("\t%s", impl->name);
+  putchar ('\n');
+
+  for (i = 1; i < 8; ++i)
+    {
+      do_test (i, i, 16, 16, 127);
+      do_test (i, i, 16, 16, 255);
+      do_test (i, 2 * i, 16, 16, 127);
+      do_test (2 * i, i, 16, 16, 255);
+      do_test (8 - i, 2 * i, 1 << i, 2 << i, 127);
+      do_test (2 * i, 8 - i, 2 << i, 1 << i, 127);
+      do_test (8 - i, 2 * i, 1 << i, 2 << i, 255);
+      do_test (2 * i, 8 - i, 2 << i, 1 << i, 255);
+    }
+
+  for (i = 1; i < 8; ++i)
+    {
+      do_test (0, 0, 4 << i, 8 << i, 127);
+      do_test (0, 0, 16 << i, 8 << i, 127);
+      do_test (8 - i, 2 * i, 4 << i, 8 << i, 127);
+      do_test (8 - i, 2 * i, 16 << i, 8 << i, 127);
+    }
+
+  return ret;
+}
+
+#include "../test-skeleton.c"
@@ -0,0 +1,20 @@
+/* Measure IFUNC implementations of strnlen function.
+   Copyright (C) 2013 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#define TEST_IFUNC 1
+#include "bench-strnlen.c"
@@ -0,0 +1,139 @@
+/* Measure strlen functions.
+   Copyright (C) 2013 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#define TEST_MAIN
+#define TEST_NAME "strnlen"
+#include "bench-string.h"
+
+typedef size_t (*proto_t) (const char *, size_t);
+size_t simple_strnlen (const char *, size_t);
+
+IMPL (simple_strnlen, 0)
+IMPL (strnlen, 1)
+
+size_t
+simple_strnlen (const char *s, size_t maxlen)
+{
+  size_t i;
+
+  for (i = 0; i < maxlen && s[i]; ++i);
+  return i;
+}
+
+static void
+do_one_test (impl_t *impl, const char *s, size_t maxlen, size_t exp_len)
+{
+  size_t len = CALL (impl, s, maxlen);
+  if (len != exp_len)
+    {
+      error (0, 0, "Wrong result in function %s %zd %zd", impl->name,
+	     len, exp_len);
+      ret = 1;
+      return;
+    }
+
+  if (HP_TIMING_AVAIL)
+    {
+      hp_timing_t start __attribute ((unused));
+      hp_timing_t stop __attribute ((unused));
+      hp_timing_t best_time = ~ (hp_timing_t) 0;
+      size_t i;
+
+      for (i = 0; i < 32; ++i)
+	{
+	  HP_TIMING_NOW (start);
+	  CALL (impl, s, maxlen);
+	  HP_TIMING_NOW (stop);
+	  HP_TIMING_BEST (best_time, start, stop);
+	}
+
+      printf ("\t%zd", (size_t) best_time);
+    }
+}
+
+static void
+do_test (size_t align, size_t len, size_t maxlen, int max_char)
+{
+  size_t i;
+
+  align &= 7;
+  if (align + len >= page_size)
+    return;
+
+  for (i = 0; i < len; ++i)
+    buf1[align + i] = 1 + 7 * i % max_char;
+  buf1[align + len] = 0;
+
+  if (HP_TIMING_AVAIL)
+    printf ("Length %4zd, alignment %2zd:", len, align);
+
+  FOR_EACH_IMPL (impl, 0)
+    do_one_test (impl, (char *) (buf1 + align), maxlen, MIN (len, maxlen));
+
+  if (HP_TIMING_AVAIL)
+    putchar ('\n');
+}
+
+int
+test_main (void)
+{
+  size_t i;
+
+  test_init ();
+
+  printf ("%20s", "");
+  FOR_EACH_IMPL (impl, 0)
+    printf ("\t%s", impl->name);
+  putchar ('\n');
+
+  for (i = 1; i < 8; ++i)
+    {
+      do_test (0, i, i - 1, 127);
+      do_test (0, i, i, 127);
+      do_test (0, i, i + 1, 127);
+    }
+
+  for (i = 1; i < 8; ++i)
+    {
+      do_test (i, i, i - 1, 127);
+      do_test (i, i, i, 127);
+      do_test (i, i, i + 1, 127);
+    }
+
+  for (i = 2; i <= 10; ++i)
+    {
+      do_test (0, 1 << i, 5000, 127);
+      do_test (1, 1 << i, 5000, 127);
+    }
+
+  for (i = 1; i < 8; ++i)
+    do_test (0, i, 5000, 255);
+
+  for (i = 1; i < 8; ++i)
+    do_test (i, i, 5000, 255);
+
+  for (i = 2; i <= 10; ++i)
+    {
+      do_test (0, 1 << i, 5000, 255);
+      do_test (1, 1 << i, 5000, 255);
+    }
+
+  return ret;
+}
+
+#include "../test-skeleton.c"
@@ -0,0 +1,20 @@
+/* Measure IFUNC implementations of strpbrk function.
+   Copyright (C) 2013 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#define TEST_IFUNC 1
+#include "bench-strpbrk.c"
@@ -0,0 +1,182 @@
+/* Measure strpbrk functions.
+   Copyright (C) 2013 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifndef STRPBRK_RESULT
+# define STRPBRK_RESULT(s, pos) ((s)[(pos)] ? (s) + (pos) : NULL)
+# define RES_TYPE char *
+# define TEST_MAIN
+# define TEST_NAME "strpbrk"
+# include "bench-string.h"
+
+typedef char *(*proto_t) (const char *, const char *);
+char *simple_strpbrk (const char *, const char *);
+char *stupid_strpbrk (const char *, const char *);
+
+IMPL (stupid_strpbrk, 0)
+IMPL (simple_strpbrk, 0)
+IMPL (strpbrk, 1)
+
+char *
+simple_strpbrk (const char *s, const char *rej)
+{
+  const char *r;
+  char c;
+
+  while ((c = *s++) != '\0')
+    for (r = rej; *r != '\0'; ++r)
+      if (*r == c)
+	return (char *) s - 1;
+  return NULL;
+}
+
+char *
+stupid_strpbrk (const char *s, const char *rej)
+{
+  size_t ns = strlen (s), nrej = strlen (rej);
+  size_t i, j;
+
+  for (i = 0; i < ns; ++i)
+    for (j = 0; j < nrej; ++j)
+      if (s[i] == rej[j])
+	return (char *) s + i;
+  return NULL;
+}
+#endif
+
+static void
+do_one_test (impl_t *impl, const char *s, const char *rej, RES_TYPE exp_res)
+{
+  RES_TYPE res = CALL (impl, s, rej);
+  if (res != exp_res)
+    {
+      error (0, 0, "Wrong result in function %s %p %p", impl->name,
+	     (void *) res, (void *) exp_res);
+      ret = 1;
+      return;
+    }
+
+  if (HP_TIMING_AVAIL)
+    {
+      hp_timing_t start __attribute ((unused));
+      hp_timing_t stop __attribute ((unused));
+      hp_timing_t best_time = ~ (hp_timing_t) 0;
+      size_t i;
+
+      for (i = 0; i < 32; ++i)
+	{
+	  HP_TIMING_NOW (start);
+	  CALL (impl, s, rej);
+	  HP_TIMING_NOW (stop);
+	  HP_TIMING_BEST (best_time, start, stop);
+	}
+
+      printf ("\t%zd", (size_t) best_time);
+    }
+}
+
+static void
+do_test (size_t align, size_t pos, size_t len)
+{
+  size_t i;
+  int c;
+  RES_TYPE result;
+  char *rej, *s;
+
+  align &= 7;
+  if (align + pos + 10 >= page_size || len > 240)
+    return;
+
+  rej = (char *) (buf2 + (random () & 255));
+  s = (char *) (buf1 + align);
+
+  for (i = 0; i < len; ++i)
+    {
+      rej[i] = random () & 255;
+      if (!rej[i])
+	rej[i] = random () & 255;
+      if (!rej[i])
+	rej[i] = 1 + (random () & 127);
+    }
+  rej[len] = '\0';
+  for (c = 1; c <= 255; ++c)
+    if (strchr (rej, c) == NULL)
+      break;
+
+  for (i = 0; i < pos; ++i)
+    {
+      s[i] = random () & 255;
+      if (strchr (rej, s[i]))
+	{
+	  s[i] = random () & 255;
+	  if (strchr (rej, s[i]))
+	    s[i] = c;
+	}
+    }
+  s[pos] = rej[random () % (len + 1)];
+  if (s[pos])
+    {
+      for (i = pos + 1; i < pos + 10; ++i)
+	s[i] = random () & 255;
+      s[i] = '\0';
+    }
+  result = STRPBRK_RESULT (s, pos);
+
+  if (HP_TIMING_AVAIL)
+    printf ("Length %4zd, alignment %2zd, rej len %2zd:", pos, align, len);
+
+  FOR_EACH_IMPL (impl, 0)
+    do_one_test (impl, s, rej, result);
+
+  if (HP_TIMING_AVAIL)
+    putchar ('\n');
+}
+
+int
+test_main (void)
+{
+  size_t i;
+
+  test_init ();
+
+  printf ("%32s", "");
+  FOR_EACH_IMPL (impl, 0)
+    printf ("\t%s", impl->name);
+  putchar ('\n');
+
+  for (i = 0; i < 32; ++i)
+    {
+      do_test (0, 512, i);
+      do_test (i, 512, i);
+    }
+
+  for (i = 1; i < 8; ++i)
+    {
+      do_test (0, 16 << i, 4);
+      do_test (i, 16 << i, 4);
+    }
+
+  for (i = 1; i < 8; ++i)
+    do_test (i, 64, 10);
+
+  for (i = 0; i < 64; ++i)
+    do_test (0, i, 6);
+
+  return ret;
+}
+
+#include "../test-skeleton.c"
@@ -0,0 +1,20 @@
+/* Measure IFUNC implementations of strrchr function.
+   Copyright (C) 2013 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#define TEST_IFUNC 1
+#include "bench-strrchr.c"
@@ -0,0 +1,190 @@
+/* Measure STRCHR functions.
+   Copyright (C) 2013 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#define TEST_MAIN
+#ifdef WIDE
+# define TEST_NAME "wcsrchr"
+#else
+# define TEST_NAME "strrchr"
+#endif
+#include "bench-string.h"
+
+#ifdef WIDE
+# include <wchar.h>
+# define SIMPLE_STRRCHR simple_wcsrchr
+# define STRRCHR wcsrchr
+# define CHAR wchar_t
+# define UCHAR wchar_t
+# define BIG_CHAR WCHAR_MAX
+# define SMALL_CHAR 1273
+#else
+# define SIMPLE_STRRCHR simple_strrchr
+# define STRRCHR strrchr
+# define CHAR char
+# define UCHAR unsigned char
+# define BIG_CHAR CHAR_MAX
+# define SMALL_CHAR 127
+#endif
+
+typedef CHAR *(*proto_t) (const CHAR *, int);
+CHAR *SIMPLE_STRRCHR (const CHAR *, int);
+
+IMPL (SIMPLE_STRRCHR, 0)
+IMPL (STRRCHR, 1)
+
+CHAR *
+SIMPLE_STRRCHR (const CHAR *s, int c)
+{
+  const CHAR *ret = NULL;
+
+  for (; *s != '\0'; ++s)
+    if (*s == (CHAR) c)
+      ret = s;
+
+  return (CHAR *) (c == '\0' ? s : ret);
+}
+
+static void
+do_one_test (impl_t *impl, const CHAR *s, int c, CHAR *exp_res)
+{
+  CHAR *res = CALL (impl, s, c);
+  if (res != exp_res)
+    {
+      error (0, 0, "Wrong result in function %s %p %p", impl->name,
+	     res, exp_res);
+      ret = 1;
+      return;
+    }
+
+  if (HP_TIMING_AVAIL)
+    {
+      hp_timing_t start __attribute ((unused));
+      hp_timing_t stop __attribute ((unused));
+      hp_timing_t best_time = ~ (hp_timing_t) 0;
+      size_t i;
+
+      for (i = 0; i < 32; ++i)
+	{
+	  HP_TIMING_NOW (start);
+	  CALL (impl, s, c);
+	  HP_TIMING_NOW (stop);
+	  HP_TIMING_BEST (best_time, start, stop);
+	}
+
+      printf ("\t%zd", (size_t) best_time);
+    }
+}
+
+static void
+do_test (size_t align, size_t pos, size_t len, int seek_char, int max_char)
+/* For wcsrchr: align here means align not in bytes,
+   but in wchar_ts, in bytes it will equal to align * (sizeof (wchar_t))
+   len for wcschr here isn't in bytes but it's number of wchar_t symbols.  */
+{
+  size_t i;
+  CHAR *result;
+  CHAR *buf = (CHAR *) buf1;
+
+  align &= 7;
+  if ( (align + len) * sizeof(CHAR) >= page_size)
+    return;
+
+  for (i = 0; i < len; ++i)
+    {
+      buf[align + i] = (random () * random ()) & max_char;
+      if (!buf[align + i])
+	buf[align + i] = (random () * random ()) & max_char;
+      if (!buf[align + i])
+	buf[align + i] = 1;
+      if ((i > pos || pos >= len) && buf[align + i] == seek_char)
+	buf[align + i] = seek_char + 10 + (random () & 15);
+    }
+  buf[align + len] = 0;
+
+  if (pos < len)
+    {
+      buf[align + pos] = seek_char;
+      result = (CHAR *) (buf + align + pos);
+    }
+  else if (seek_char == 0)
+    result = (CHAR *) (buf + align + len);
+  else
+    result = NULL;
+
+  if (HP_TIMING_AVAIL)
+    printf ("Length %4zd, alignment in bytes %2zd:", pos, align * sizeof(CHAR));
+
+  FOR_EACH_IMPL (impl, 0)
+    do_one_test (impl, (CHAR *) (buf + align), seek_char, result);
+
+  if (HP_TIMING_AVAIL)
+    putchar ('\n');
+}
+
+int
+test_main (void)
+{
+  size_t i;
+
+  test_init ();
+
+  printf ("%20s", "");
+  FOR_EACH_IMPL (impl, 0)
+    printf ("\t%s", impl->name);
+  putchar ('\n');
+
+  for (i = 1; i < 8; ++i)
+    {
+      do_test (0, 16 << i, 2048, 23, SMALL_CHAR);
+      do_test (i, 16 << i, 2048, 23, SMALL_CHAR);
+    }
+
+  for (i = 1; i < 8; ++i)
+    {
+      do_test (i, 64, 256, 23, SMALL_CHAR);
+      do_test (i, 64, 256, 23, BIG_CHAR);
+    }
+
+  for (i = 0; i < 32; ++i)
+    {
+      do_test (0, i, i + 1, 23, SMALL_CHAR);
+      do_test (0, i, i + 1, 23, BIG_CHAR);
+    }
+
+  for (i = 1; i < 8; ++i)
+    {
+      do_test (0, 16 << i, 2048, 0, SMALL_CHAR);
+      do_test (i, 16 << i, 2048, 0, SMALL_CHAR);
+    }
+
+  for (i = 1; i < 8; ++i)
+    {
+      do_test (i, 64, 256, 0, SMALL_CHAR);
+      do_test (i, 64, 256, 0, BIG_CHAR);
+    }
+
+  for (i = 0; i < 32; ++i)
+    {
+      do_test (0, i, i + 1, 0, SMALL_CHAR);
+      do_test (0, i, i + 1, 0, BIG_CHAR);
+    }
+
+  return ret;
+}
+
+#include "../test-skeleton.c"
@@ -0,0 +1,20 @@
+/* Measure IFUNC implementations of strspn function.
+   Copyright (C) 2013 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#define TEST_IFUNC 1
+#include "bench-strspn.c"
@@ -0,0 +1,174 @@
+/* Measure strspn functions.
+   Copyright (C) 2013 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#define TEST_MAIN
+#define TEST_NAME "strspn"
+#include "bench-string.h"
+
+typedef size_t (*proto_t) (const char *, const char *);
+size_t simple_strspn (const char *, const char *);
+size_t stupid_strspn (const char *, const char *);
+
+IMPL (stupid_strspn, 0)
+IMPL (simple_strspn, 0)
+IMPL (strspn, 1)
+
+size_t
+simple_strspn (const char *s, const char *acc)
+{
+  const char *r, *str = s;
+  char c;
+
+  while ((c = *s++) != '\0')
+    {
+      for (r = acc; *r != '\0'; ++r)
+	if (*r == c)
+	  break;
+      if (*r == '\0')
+	return s - str - 1;
+    }
+  return s - str - 1;
+}
+
+size_t
+stupid_strspn (const char *s, const char *acc)
+{
+  size_t ns = strlen (s), nacc = strlen (acc);
+  size_t i, j;
+
+  for (i = 0; i < ns; ++i)
+    {
+      for (j = 0; j < nacc; ++j)
+	if (s[i] == acc[j])
+	  break;
+      if (j == nacc)
+	return i;
+    }
+  return i;
+}
+
+static void
+do_one_test (impl_t *impl, const char *s, const char *acc, size_t exp_res)
+{
+  size_t res = CALL (impl, s, acc);
+  if (res != exp_res)
+    {
+      error (0, 0, "Wrong result in function %s %p %p", impl->name,
+	     (void *) res, (void *) exp_res);
+      ret = 1;
+      return;
+    }
+
+  if (HP_TIMING_AVAIL)
+    {
+      hp_timing_t start __attribute ((unused));
+      hp_timing_t stop __attribute ((unused));
+      hp_timing_t best_time = ~ (hp_timing_t) 0;
+      size_t i;
+
+      for (i = 0; i < 32; ++i)
+	{
+	  HP_TIMING_NOW (start);
+	  CALL (impl, s, acc);
+	  HP_TIMING_NOW (stop);
+	  HP_TIMING_BEST (best_time, start, stop);
+	}
+
+      printf ("\t%zd", (size_t) best_time);
+    }
+}
+
+static void
+do_test (size_t align, size_t pos, size_t len)
+{
+  size_t i;
+  char *acc, *s;
+
+  align &= 7;
+  if (align + pos + 10 >= page_size || len > 240 || ! len)
+    return;
+
+  acc = (char *) (buf2 + (random () & 255));
+  s = (char *) (buf1 + align);
+
+  for (i = 0; i < len; ++i)
+    {
+      acc[i] = random () & 255;
+      if (!acc[i])
+	acc[i] = random () & 255;
+      if (!acc[i])
+	acc[i] = 1 + (random () & 127);
+    }
+  acc[len] = '\0';
+
+  for (i = 0; i < pos; ++i)
+    s[i] = acc[random () % len];
+  s[pos] = random () & 255;
+  if (strchr (acc, s[pos]))
+    s[pos] = '\0';
+  else
+    {
+      for (i = pos + 1; i < pos + 10; ++i)
+	s[i] = random () & 255;
+      s[i] = '\0';
+    }
+
+  if (HP_TIMING_AVAIL)
+    printf ("Length %4zd, alignment %2zd, acc len %2zd:", pos, align, len);
+
+  FOR_EACH_IMPL (impl, 0)
+    do_one_test (impl, s, acc, pos);
+
+  if (HP_TIMING_AVAIL)
+    putchar ('\n');
+}
+
+int
+test_main (void)
+{
+  size_t i;
+
+  test_init ();
+
+  printf ("%32s", "");
+  FOR_EACH_IMPL (impl, 0)
+    printf ("\t%s", impl->name);
+  putchar ('\n');
+
+  for (i = 0; i < 32; ++i)
+    {
+      do_test (0, 512, i);
+      do_test (i, 512, i);
+    }
+
+  for (i = 1; i < 8; ++i)
+    {
+      do_test (0, 16 << i, 4);
+      do_test (i, 16 << i, 4);
+    }
+
+  for (i = 1; i < 8; ++i)
+    do_test (i, 64, 10);
+
+  for (i = 0; i < 64; ++i)
+    do_test (0, i, 6);
+
+  return ret;
+}
+
+#include "../test-skeleton.c"
@@ -0,0 +1,20 @@
+/* Measure IFUNC implementations of strstr function.
+   Copyright (C) 2013 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#define TEST_IFUNC 1
+#include "bench-strstr.c"
@@ -0,0 +1,183 @@
+/* Measure strstr functions.
+   Copyright (C) 2013 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#define TEST_MAIN
+#define TEST_NAME "strstr"
+#include "bench-string.h"
+
+
+#define STRSTR simple_strstr
+#include "../string/strstr.c"
+
+
+static char *
+stupid_strstr (const char *s1, const char *s2)
+{
+  ssize_t s1len = strlen (s1);
+  ssize_t s2len = strlen (s2);
+
+  if (s2len > s1len)
+    return NULL;
+
+  for (ssize_t i = 0; i <= s1len - s2len; ++i)
+    {
+      size_t j;
+      for (j = 0; j < s2len; ++j)
+	if (s1[i + j] != s2[j])
+	  break;
+      if (j == s2len)
+	return (char *) s1 + i;
+    }
+
+  return NULL;
+}
+
+
+typedef char *(*proto_t) (const char *, const char *);
+
+IMPL (stupid_strstr, 0)
+IMPL (simple_strstr, 0)
+IMPL (strstr, 1)
+
+
+static void
+do_one_test (impl_t *impl, const char *s1, const char *s2, char *exp_result)
+{
+  if (HP_TIMING_AVAIL)
+    {
+      hp_timing_t start __attribute ((unused));
+      hp_timing_t stop __attribute ((unused));
+      hp_timing_t best_time = ~(hp_timing_t) 0;
+      size_t i;
+
+      for (i = 0; i < 32; ++i)
+	{
+	  HP_TIMING_NOW (start);
+	  CALL (impl, s1, s2);
+	  HP_TIMING_NOW (stop);
+	  HP_TIMING_BEST (best_time, start, stop);
+	}
+
+      printf ("\t%zd", (size_t) best_time);
+    }
+}
+
+
+static void
+do_test (size_t align1, size_t align2, size_t len1, size_t len2,
+	 int fail)
+{
+  char *s1 = (char *) (buf1 + align1);
+  char *s2 = (char *) (buf2 + align2);
+
+  static const char d[] = "1234567890abcdef";
+#define dl (sizeof (d) - 1)
+  char *ss2 = s2;
+  for (size_t l = len2; l > 0; l = l > dl ? l - dl : 0)
+    {
+      size_t t = l > dl ? dl : l;
+      ss2 = mempcpy (ss2, d, t);
+    }
+  s2[len2] = '\0';
+
+  if (fail)
+    {
+      char *ss1 = s1;
+      for (size_t l = len1; l > 0; l = l > dl ? l - dl : 0)
+	{
+	  size_t t = l > dl ? dl : l;
+	  memcpy (ss1, d, t);
+	  ++ss1[len2 > 7 ? 7 : len2 - 1];
+	  ss1 += t;
+	}
+    }
+  else
+    {
+      memset (s1, '0', len1);
+      memcpy (s1 + len1 - len2, s2, len2);
+    }
+  s1[len1] = '\0';
+
+  if (HP_TIMING_AVAIL)
+    printf ("Length %4zd/%zd, alignment %2zd/%2zd, %s:",
+	    len1, len2, align1, align2, fail ? "fail" : "found");
+
+  FOR_EACH_IMPL (impl, 0)
+    do_one_test (impl, s1, s2, fail ? NULL : s1 + len1 - len2);
+
+  if (HP_TIMING_AVAIL)
+    putchar ('\n');
+}
+
+static int
+test_main (void)
+{
+  test_init ();
+
+  printf ("%23s", "");
+  FOR_EACH_IMPL (impl, 0)
+    printf ("\t%s", impl->name);
+  putchar ('\n');
+
+  for (size_t klen = 2; klen < 32; ++klen)
+    for (size_t hlen = 2 * klen; hlen < 16 * klen; hlen += klen)
+      {
+	do_test (0, 0, hlen, klen, 0);
+	do_test (0, 0, hlen, klen, 1);
+	do_test (0, 3, hlen, klen, 0);
+	do_test (0, 3, hlen, klen, 1);
+	do_test (0, 9, hlen, klen, 0);
+	do_test (0, 9, hlen, klen, 1);
+	do_test (0, 15, hlen, klen, 0);
+	do_test (0, 15, hlen, klen, 1);
+
+	do_test (3, 0, hlen, klen, 0);
+	do_test (3, 0, hlen, klen, 1);
+	do_test (3, 3, hlen, klen, 0);
+	do_test (3, 3, hlen, klen, 1);
+	do_test (3, 9, hlen, klen, 0);
+	do_test (3, 9, hlen, klen, 1);
+	do_test (3, 15, hlen, klen, 0);
+	do_test (3, 15, hlen, klen, 1);
+
+	do_test (9, 0, hlen, klen, 0);
+	do_test (9, 0, hlen, klen, 1);
+	do_test (9, 3, hlen, klen, 0);
+	do_test (9, 3, hlen, klen, 1);
+	do_test (9, 9, hlen, klen, 0);
+	do_test (9, 9, hlen, klen, 1);
+	do_test (9, 15, hlen, klen, 0);
+	do_test (9, 15, hlen, klen, 1);
+
+	do_test (15, 0, hlen, klen, 0);
+	do_test (15, 0, hlen, klen, 1);
+	do_test (15, 3, hlen, klen, 0);
+	do_test (15, 3, hlen, klen, 1);
+	do_test (15, 9, hlen, klen, 0);
+	do_test (15, 9, hlen, klen, 1);
+	do_test (15, 15, hlen, klen, 0);
+	do_test (15, 15, hlen, klen, 1);
+      }
+
+  do_test (0, 0, page_size - 1, 16, 0);
+  do_test (0, 0, page_size - 1, 16, 1);
+
+  return ret;
+}
+
+#include "../test-skeleton.c"
@@ -0,0 +1,72 @@
+/* Define timing macros.
+   Copyright (C) 2013 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <hp-timing.h>
+#include <stdint.h>
+
+#if HP_TIMING_AVAIL && !defined USE_CLOCK_GETTIME
+# define GL(x) _##x
+# define GLRO(x) _##x
+hp_timing_t _dl_hp_timing_overhead;
+typedef hp_timing_t timing_t;
+
+# define TIMING_INIT(iters) \
+({									      \
+  HP_TIMING_DIFF_INIT();						      \
+  (iters) = 1000;							      \
+})
+
+# define TIMING_NOW(var) HP_TIMING_NOW (var)
+# define TIMING_DIFF(diff, start, end) HP_TIMING_DIFF ((diff), (start), (end))
+# define TIMING_ACCUM(sum, diff) HP_TIMING_ACCUM_NT ((sum), (diff))
+
+# define TIMING_PRINT_STATS(func, d_total_s, d_iters, d_total_i, max, min) \
+  printf ("%s: ITERS:%g: TOTAL:%gMcy, MAX:%gcy, MIN:%gcy, %g calls/Mcy\n",    \
+	  (func), (d_total_i), (d_total_s) * 1e-6, (max) / (d_iters),	      \
+	  (min) / (d_iters), 1e6 * (d_total_i) / (d_total_s));
+
+#else
+typedef uint64_t timing_t;
+
+/* Measure 1000 times the resolution of the clock.  So for a 1ns
+   resolution  clock, we measure 1000 iterations of the function call at a
+   time.  Measurements close to the minimum clock resolution won't make
+   much sense, but it's better than having nothing at all.  */
+# define TIMING_INIT(iters) \
+({									      \
+  struct timespec start;						      \
+  clock_getres (CLOCK_PROCESS_CPUTIME_ID, &start);			      \
+  (iters) = 1000 * start.tv_nsec;					      \
+})
+
+# define TIMING_NOW(var) \
+({									      \
+  struct timespec tv;							      \
+  clock_gettime (CLOCK_PROCESS_CPUTIME_ID, &tv);			      \
+  (var) = (uint64_t) (tv.tv_nsec + (uint64_t) 1000000000 * tv.tv_sec);	      \
+})
+
+# define TIMING_DIFF(diff, start, end) (diff) = (end) - (start)
+# define TIMING_ACCUM(sum, diff) (sum) += (diff)
+
+# define TIMING_PRINT_STATS(func, d_total_s, d_iters, d_total_i, max, min) \
+  printf ("%s: ITERS:%g: TOTAL:%gs, MAX:%gns, MIN:%gns, %g iter/s\n",	      \
+	  (func), (d_total_i), (d_total_s) * 1e-9, (max) / (d_iters),		      \
+	  (min) / (d_iters), 1e9 * (d_total_i) / (d_total_s))
+
+#endif
@@ -3,3 +3,11 @@
 0x1.00000162a932ap0
 0x1.000002d452a11p0
 0x1.000005bc7d86cp0
+# cos slow path at 768 bits
+# Implemented in sysdeps/ieee754/dbl-64/sincos32.c
+## name: 768bits
+0x1.000000cf4a2a2p0
+0x1.0000010b239a9p0
+0x1.00000162a932bp0
+0x1.000002d452a10p0
+0x1.000005bc7d86dp0
@@ -0,0 +1,5 @@
+0.1
+0.2
+0.3
+0.4
+0.5
@@ -1 +1,5 @@
 42
+# Slowest path with computation in 768 bit precision.
+# Implemented in: sysdeps/ieee754/dbl-64/mpexp.c
+## name: 768bits
+708.00096423260981737257679924368858
@@ -0,0 +1 @@
+42.0
@@ -1 +1,5 @@
 42.0, 42.0
+# pow slowest path at 768 bits
+# Implemented in sysdeps/ieee754/dbl-64/slowpow.c
+## name: 768bits
+1.0000000000000020, 1.5
@@ -5,3 +5,13 @@
 4.0
 4.7
 5.9
+# sin slowest path at 768 bits
+# Implemented in sysdeps/ieee754/dbl-64/sincos32.c
+## name: 768bits
+0.93340582292648832662962377071381
+2.3328432680770916363144351635128
+3.7439477503636453548097051680088
+3.9225160069792437411706487182528
+4.0711651639931289992091478779912
+4.7858438478542097982426639646292
+5.9840767662578002727968851104379
@@ -0,0 +1,5 @@
+0.1
+0.2
+0.3
+0.4
+0.5
@@ -1,3 +0,0 @@
-0x1.000000c5cba87p0
-0x1.000001883003bp0
-0x1.00000dfb2b675p0
@@ -1,5 +0,0 @@
-0x1.000000cf4a2a2p0
-0x1.0000010b239a9p0
-0x1.00000162a932bp0
-0x1.000002d452a10p0
-0x1.000005bc7d86dp0
@@ -1 +0,0 @@
-708.00096423260981737257679924368858
@@ -1 +0,0 @@
-1.0000000000000020, 1.5
@@ -1,7 +0,0 @@
-0.93340582292648832662962377071381
-2.3328432680770916363144351635128
-3.7439477503636453548097051680088
-3.9225160069792437411706487182528
-4.0711651639931289992091478779912
-4.7858438478542097982426639646292
-5.9840767662578002727968851104379
@@ -1,19 +0,0 @@
-/* Define slowsin.
-   Copyright (C) 2013 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-
-   The GNU C Library is free software; you can redistribute it and/or
-   modify it under the terms of the GNU Lesser General Public
-   License as published by the Free Software Foundation; either
-   version 2.1 of the License, or (at your option) any later version.
-
-   The GNU C Library is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   Lesser General Public License for more details.
-
-   You should have received a copy of the GNU Lesser General Public
-   License along with the GNU C Library; if not, see
-   <http://www.gnu.org/licenses/>.  */
-
-#define slowsin sin
@@ -1 +0,0 @@
-0x1.dffffffffff1fp-22
@@ -1,19 +0,0 @@
-/* Define slowtan.
-   Copyright (C) 2013 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-
-   The GNU C Library is free software; you can redistribute it and/or
-   modify it under the terms of the GNU Lesser General Public
-   License as published by the Free Software Foundation; either
-   version 2.1 of the License, or (at your option) any later version.
-
-   The GNU C Library is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   Lesser General Public License for more details.
-
-   You should have received a copy of the GNU Lesser General Public
-   License along with the GNU C Library; if not, see
-   <http://www.gnu.org/licenses/>.  */
-
-#define slowtan tan
@@ -1 +1,5 @@
 0x1.dffffffffff1ep-22
+# tan slowest path at 768 bits
+# Implemented in sysdeps/ieee754/dbl-64/mptan.c
+## name: 768bits
+0x1.dffffffffff1fp-22
--- a/Show More
+++ b/Show More