diff options
| author | Noah Goldstein <goldstein.w.n@gmail.com> | 2021-10-23 01:26:47 -0400 |
|---|---|---|
| committer | Noah Goldstein <goldstein.w.n@gmail.com> | 2021-10-23 13:02:42 -0500 |
| commit | bad852b61b79503fcb3c5fc379c70f768df3e1fb (patch) | |
| tree | 3b37966225e1c354d49314058c513bed713883c3 /elf/Makefile | |
| parent | d8e7d0638153d27c5982619c881223bd791e844e (diff) | |
| download | glibc-bad852b61b79503fcb3c5fc379c70f768df3e1fb.tar.gz glibc-bad852b61b79503fcb3c5fc379c70f768df3e1fb.tar.xz glibc-bad852b61b79503fcb3c5fc379c70f768df3e1fb.zip | |
x86: Replace sse2 instructions with avx in memcmp-evex-movbe.S
This commit replaces two usages of SSE2 'movups' with AVX 'vmovdqu'. it could potentially be dangerous to use SSE2 if this function is ever called without using 'vzeroupper' beforehand. While compilers appear to use 'vzeroupper' before function calls if AVX2 has been used, using SSE2 here is more brittle. Since it is not absolutely necessary it should be avoided. It costs 2-extra bytes but the extra bytes should only eat into alignment padding. Reviewed-by: H.J. Lu <hjl.tools@gmail.com>
Diffstat (limited to 'elf/Makefile')
0 files changed, 0 insertions, 0 deletions