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From: H.J. Lu <hjl@sourceware.org>
To: glibc-cvs@sourceware.org
Subject: [glibc/release/2.30/master] x86-64: Use RDX_LP on __x86_shared_non_temporal_threshold [BZ #25966]
Date: Sat, 9 May 2020 19:48:40 +0000 (GMT) [thread overview]
Message-ID: <20200509194840.428FA3851C28@sourceware.org> (raw)
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=6ffe972db76ca42fc92366c98c9174cb9b27c8e6
commit 6ffe972db76ca42fc92366c98c9174cb9b27c8e6
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 2e9d86bd33..29cab02f79 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):
reply other threads:[~2020-05-09 19:48 UTC|newest]
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