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From: H.J. Lu <hjl@sourceware.org> To: glibc-cvs@sourceware.org Subject: [glibc/release/2.31/master] x86-64: Use RDX_LP on __x86_shared_non_temporal_threshold [BZ #25966] Date: Sat, 9 May 2020 19:40:25 +0000 (GMT) [thread overview] Message-ID: <20200509194025.490183851C28@sourceware.org> (raw) https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=4c833bbebe366ac5baec87dd68ec0a4962ee86ae commit 4c833bbebe366ac5baec87dd68ec0a4962ee86ae Author: H.J. Lu <hjl.tools@gmail.com> Date: Sat May 9 12:04:23 2020 -0700 x86-64: Use RDX_LP on __x86_shared_non_temporal_threshold [BZ #25966] Since __x86_shared_non_temporal_threshold is defined as long int __x86_shared_non_temporal_threshold; and long int is 4 bytes for x32, use RDX_LP to compare against __x86_shared_non_temporal_threshold in assembly code. (cherry picked from commit 55c7bcc71b84123d5d4bd2814366a6b05fcf8ebd) Diff: --- sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S b/sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S index c763b7d871..74953245aa 100644 --- a/sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S +++ b/sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S @@ -244,7 +244,7 @@ L(return): ret L(movsb): - cmpq __x86_shared_non_temporal_threshold(%rip), %rdx + cmp __x86_shared_non_temporal_threshold(%rip), %RDX_LP jae L(more_8x_vec) cmpq %rsi, %rdi jb 1f @@ -402,7 +402,7 @@ L(more_8x_vec): addq %r8, %rdx #if (defined USE_MULTIARCH || VEC_SIZE == 16) && IS_IN (libc) /* Check non-temporal store threshold. */ - cmpq __x86_shared_non_temporal_threshold(%rip), %rdx + cmp __x86_shared_non_temporal_threshold(%rip), %RDX_LP ja L(large_forward) #endif L(loop_4x_vec_forward): @@ -454,7 +454,7 @@ L(more_8x_vec_backward): subq %r8, %rdx #if (defined USE_MULTIARCH || VEC_SIZE == 16) && IS_IN (libc) /* Check non-temporal store threshold. */ - cmpq __x86_shared_non_temporal_threshold(%rip), %rdx + cmp __x86_shared_non_temporal_threshold(%rip), %RDX_LP ja L(large_backward) #endif L(loop_4x_vec_backward):
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