mirror of git://sourceware.org/git/glibc.git
e6a1c5dc77
Support added to identify Sparc M7/T7/S7/M8/T8 processor capability. Performance tests run on Sparc S7 using new code and old niagara4 code. Optimizations for memset also apply to bzero as they share code. For memset/bzero, performance comparison with niagara4 code: For memset nonzero data, 256-1023 bytes - 60-90% gain (in cache); 5% gain (out of cache) 1K+ bytes - 80-260% gain (in cache); 40-80% gain (out of cache) For memset zero data (and bzero), 256-1023 bytes - 80-120% gain (in cache), 0% gain (out of cache) 1024+ bytes - 2-4x gain (in cache), 10-35% gain (out of cache) Tested in sparcv9-*-* and sparc64-*-* targets in both multi and non-multi arch configurations. Patrick McGehearty <patrick.mcgehearty@oracle.com> Adhemerval Zanella <adhemerval.zanella@linaro.org> * sysdeps/sparc/sparc32/sparcv9/multiarch/Makefile (sysdeps_routines): Add memset-niagara7. * sysdeps/sparc/sparc64/multiarch/Makefile (sysdes_rotuines): Likewise. * sysdeps/sparc/sparc32/sparcv9/multiarch/memset-niagara7.S: New file. * sysdeps/sparc/sparc64/multiarch/memset-niagara7.S: Likewise. * sysdeps/sparc/sparc64/multiarch/ifunc-impl-list.c (__libc_ifunc_impl_list): Add __bzero_niagara7 and __memset_niagara7. * sysdeps/sparc/sparc64/multiarch/ifunc-memset.h (IFUNC_SELECTOR): Add niagara7 option. * NEWS: Mention sparc m7 optimized memcpy, mempcpy, memmove, and memset. |
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| .. | ||
| bits | ||
| fpu | ||
| multiarch | ||
| soft-fp | ||
| Implies | ||
| Makefile | ||
| Versions | ||
| add_n.S | ||
| addmul_1.S | ||
| align-cpy.S | ||
| atomic-machine.h | ||
| backtrace.h | ||
| bzero.c | ||
| cpu_relax.c | ||
| dl-irel.h | ||
| dl-machine.h | ||
| dl-plt.h | ||
| dl-trampoline.S | ||
| hp-timing.h | ||
| jmpbuf-unwind.h | ||
| lshift.S | ||
| memchr.S | ||
| memcmp.S | ||
| memcpy.S | ||
| memmove.S | ||
| memset.S | ||
| mul_1.S | ||
| pthread_spin_init.c | ||
| pthread_spin_lock.S | ||
| pthread_spin_trylock.S | ||
| pthread_spin_unlock.S | ||
| pthreaddef.h | ||
| rawmemchr.S | ||
| rshift.S | ||
| rtld-memcpy.c | ||
| rtld-memmove.c | ||
| rtld-memset.c | ||
| stackguard-macros.h | ||
| start.S | ||
| stpcpy.S | ||
| stpncpy.S | ||
| strcat.S | ||
| strchr.S | ||
| strcmp.S | ||
| strcpy.S | ||
| strcspn.S | ||
| strlen.S | ||
| strncmp.S | ||
| strncpy.S | ||
| strpbrk.S | ||
| strrchr.c | ||
| strspn.S | ||
| sub_n.S | ||
| submul_1.S | ||
| tls-macros.h | ||
| tst-audit.h | ||