glibc/glibc-upstream-2.34-180.patch
Carlos O'Donell 4e3257320c Sync with upstream branch release/2.34/master
Upstream commit: 55640ed3fde48360a8e8083be4843bd2dc7cecfe

- i386: Regenerate ulps
- linux: Fix missing internal 64 bit time_t stat usage
- x86: Optimize L(less_vec) case in memcmp-evex-movbe.S
- x86: Don't set Prefer_No_AVX512 for processors with AVX512 and AVX-VNNI
- x86-64: Use notl in EVEX strcmp [BZ #28646]
- x86: Shrink memcmp-sse4.S code size
- x86: Double size of ERMS rep_movsb_threshold in dl-cacheinfo.h
- x86: Optimize memmove-vec-unaligned-erms.S
- x86-64: Replace movzx with movzbl
- x86-64: Remove Prefer_AVX2_STRCMP
- x86-64: Improve EVEX strcmp with masked load
- x86: Replace sse2 instructions with avx in memcmp-evex-movbe.S
- x86: Optimize memset-vec-unaligned-erms.S
- x86: Optimize memcmp-evex-movbe.S for frontend behavior and size
- x86: Modify ENTRY in sysdep.h so that p2align can be specified
- x86-64: Optimize load of all bits set into ZMM register [BZ #28252]
- scripts/glibcelf.py: Mark as UNSUPPORTED on Python 3.5 and earlier
- dlfcn: Do not use rtld_active () to determine ld.so state (bug 29078)
- INSTALL: Rephrase -with-default-link documentation
- misc: Fix rare fortify crash on wchar funcs. [BZ 29030]
- Default to --with-default-link=no (bug 25812)
- scripts: Add glibcelf.py module
2022-04-27 22:27:50 -04:00

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Diff

commit 2e64237a8744dd50f9222293275fa52e7248ff76
Author: Fangrui Song <maskray@google.com>
Date: Tue Nov 2 20:59:52 2021 -0700
x86-64: Replace movzx with movzbl
Clang cannot assemble movzx in the AT&T dialect mode.
../sysdeps/x86_64/strcmp.S:2232:16: error: invalid operand for instruction
movzx (%rsi), %ecx
^~~~
Change movzx to movzbl, which follows the AT&T dialect and is used
elsewhere in the file.
Reviewed-by: H.J. Lu <hjl.tools@gmail.com>
(cherry picked from commit 6720d36b6623c5e48c070d86acf61198b33e144e)
diff --git a/sysdeps/x86_64/multiarch/strcmp-sse42.S b/sysdeps/x86_64/multiarch/strcmp-sse42.S
index bc19547b09639071..6197a723b9e0606e 100644
--- a/sysdeps/x86_64/multiarch/strcmp-sse42.S
+++ b/sysdeps/x86_64/multiarch/strcmp-sse42.S
@@ -1771,8 +1771,8 @@ LABEL(strcmp_exitz):
.p2align 4
// XXX Same as code above
LABEL(Byte0):
- movzx (%rsi), %ecx
- movzx (%rdi), %eax
+ movzbl (%rsi), %ecx
+ movzbl (%rdi), %eax
#if defined USE_AS_STRCASECMP_L || defined USE_AS_STRNCASECMP_L
leaq _nl_C_LC_CTYPE_tolower+128*4(%rip), %rdx
diff --git a/sysdeps/x86_64/strcmp.S b/sysdeps/x86_64/strcmp.S
index 824e648230a15739..7f8a1bc756f86aee 100644
--- a/sysdeps/x86_64/strcmp.S
+++ b/sysdeps/x86_64/strcmp.S
@@ -2232,8 +2232,8 @@ LABEL(strcmp_exitz):
.p2align 4
LABEL(Byte0):
- movzx (%rsi), %ecx
- movzx (%rdi), %eax
+ movzbl (%rsi), %ecx
+ movzbl (%rdi), %eax
#if defined USE_AS_STRCASECMP_L || defined USE_AS_STRNCASECMP_L
leaq _nl_C_LC_CTYPE_tolower+128*4(%rip), %rdx