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author | H.J. Lu <hjl.tools@gmail.com> | 2017-01-30 10:59:15 -0800 |
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committer | H.J. Lu <hjl.tools@gmail.com> | 2017-01-30 10:59:31 -0800 |
commit | 02b78ff749f0c88771713368dbb2a09b1979814f (patch) | |
tree | f65e7fc16ef78b3e4254dcf0dcdb1e98864c5576 /soft-fp/fixunshfti.c | |
parent | f8bf15febcaf137bbec5a61101e88cd5a9d56ca8 (diff) | |
download | glibc-02b78ff749f0c88771713368dbb2a09b1979814f.tar.gz glibc-02b78ff749f0c88771713368dbb2a09b1979814f.tar.xz glibc-02b78ff749f0c88771713368dbb2a09b1979814f.zip |
Add VZEROUPPER to memset-vec-unaligned-erms.S [BZ #21081]
Since memset-vec-unaligned-erms.S has VDUP_TO_VEC0_AND_SET_RETURN at function entry, memset optimized for AVX2 and AVX512 will always use ymm/zmm register. VZEROUPPER should be placed before ret in L(stosb): movq %rdx, %rcx movzbl %sil, %eax movq %rdi, %rdx rep stosb movq %rdx, %rax ret since it can be reached from L(stosb_more_2x_vec): cmpq $REP_STOSB_THRESHOLD, %rdx ja L(stosb) [BZ #21081] * sysdeps/x86_64/multiarch/memset-vec-unaligned-erms.S (L(stosb)): Add VZEROUPPER before ret.
Diffstat (limited to 'soft-fp/fixunshfti.c')
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