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From c640bf1ea99d9598f8e3afc922567d8b3623d23e Mon Sep 17 00:00:00 2001
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From: "H.J. Lu" <hjl.tools@gmail.com>
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Date: Wed, 2 Mar 2022 14:57:54 -0800
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Subject: [PATCH] x86-64: Use RDX_LP on __x86_shared_non_temporal_threshold [BZ
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#25966]
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Since __x86_shared_non_temporal_threshold is defined as
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long int __x86_shared_non_temporal_threshold;
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and long int is 4 bytes for x32, use RDX_LP to compare against
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__x86_shared_non_temporal_threshold in assembly code.
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(cherry picked from commit 55c7bcc71b84123d5d4bd2814366a6b05fcf8ebd)
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---
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sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S | 6 +++---
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1 file changed, 3 insertions(+), 3 deletions(-)
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diff --git a/sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S b/sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S
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index 71f5954d..673b73aa 100644
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--- a/sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S
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+++ b/sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S
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@@ -245,7 +245,7 @@ L(return):
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#endif
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L(movsb):
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- cmpq __x86_shared_non_temporal_threshold(%rip), %rdx
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+ cmp __x86_shared_non_temporal_threshold(%rip), %RDX_LP
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jae L(more_8x_vec)
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cmpq %rsi, %rdi
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jb 1f
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@@ -397,7 +397,7 @@ L(more_8x_vec):
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addq %r8, %rdx
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#if (defined USE_MULTIARCH || VEC_SIZE == 16) && IS_IN (libc)
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/* Check non-temporal store threshold. */
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- cmpq __x86_shared_non_temporal_threshold(%rip), %rdx
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+ cmp __x86_shared_non_temporal_threshold(%rip), %RDX_LP
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ja L(large_forward)
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#endif
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L(loop_4x_vec_forward):
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@@ -448,7 +448,7 @@ L(more_8x_vec_backward):
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subq %r8, %rdx
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#if (defined USE_MULTIARCH || VEC_SIZE == 16) && IS_IN (libc)
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/* Check non-temporal store threshold. */
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- cmpq __x86_shared_non_temporal_threshold(%rip), %rdx
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+ cmp __x86_shared_non_temporal_threshold(%rip), %RDX_LP
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ja L(large_backward)
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#endif
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L(loop_4x_vec_backward):
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--
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GitLab
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