mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-29 05:51:10 +00:00
ceabdcd130
1. Add default ISA level selection in non-multiarch/rtld
implementations.
2. Add ISA level build guards to different implementations.
- I.e strcmp-avx2.S which is ISA level 3 will only build if
compiled ISA level <= 3. Otherwise there is no reason to
include it as we will always use one of the ISA level 4
implementations (strcmp-evex.S).
3. Refactor the ifunc selector and ifunc implementation list to use
the ISA level aware wrapper macros that allow functions below the
compiled ISA level (with a guranteed replacement) to be skipped.
Tested with and without multiarch on x86_64 for ISA levels:
{generic, x86-64-v2, x86-64-v3, x86-64-v4}
And m32 with and without multiarch.
10 lines
154 B
ArmAsm
10 lines
154 B
ArmAsm
#ifndef WCSLEN
|
|
# define WCSLEN __wcslen_sse4_1
|
|
#endif
|
|
|
|
#define AS_WCSLEN 1
|
|
#define STRLEN WCSLEN
|
|
#define SECTION(p) p##.sse4.1
|
|
|
|
#include "strlen-sse2.S"
|