diff options
Diffstat (limited to 'sysdeps/x86_64/multiarch/memcmp.S')
| -rw-r--r-- | sysdeps/x86_64/multiarch/memcmp.S | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/sysdeps/x86_64/multiarch/memcmp.S b/sysdeps/x86_64/multiarch/memcmp.S index 6129820093..0c9804b7e9 100644 --- a/sysdeps/x86_64/multiarch/memcmp.S +++ b/sysdeps/x86_64/multiarch/memcmp.S @@ -27,7 +27,18 @@ ENTRY(memcmp) .type memcmp, @gnu_indirect_function LOAD_RTLD_GLOBAL_RO_RDX - HAS_CPU_FEATURE (SSSE3) + HAS_ARCH_FEATURE (Prefer_No_VZEROUPPER) + jnz 1f + HAS_ARCH_FEATURE (AVX2_Usable) + jz 1f + HAS_CPU_FEATURE (MOVBE) + jz 1f + HAS_ARCH_FEATURE (AVX_Fast_Unaligned_Load) + jz 1f + leaq __memcmp_avx2_movbe(%rip), %rax + ret + +1: HAS_CPU_FEATURE (SSSE3) jnz 2f leaq __memcmp_sse2(%rip), %rax ret |