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math: Improve layout of expf data 

GCC aligns global data to 16 bytes if their size is >= 16 bytes.  This patch
changes the exp2f_data struct slightly so that the fields are better aligned.
As a result on targets that support them, load-pair instructions accessing
poly_scaled and invln2_scaled are now 16-byte aligned.

Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>
(cherry picked from commit 44fa9c1080)
This commit is contained in:
Wilco Dijkstra 2024-07-24 15:17:47 +01:00
parent 904c58e47b
commit 59f67e1b82
1 changed files with 1 additions and 1 deletions
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sysdeps/ieee754/flt-32/math_config.h
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@ -126,9 +126,9 @@ extern const struct exp2f_data
uint64_t tab[1 << EXP2F_TABLE_BITS]; uint64_t tab[1 << EXP2F_TABLE_BITS];
double shift_scaled; double shift_scaled;
double poly[EXP2F_POLY_ORDER]; double poly[EXP2F_POLY_ORDER];
double shift;
double invln2_scaled; double invln2_scaled;
double poly_scaled[EXP2F_POLY_ORDER]; double poly_scaled[EXP2F_POLY_ORDER];
double shift;
} __exp2f_data attribute_hidden; } __exp2f_data attribute_hidden;
#define LOGF_TABLE_BITS 4 #define LOGF_TABLE_BITS 4