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| author |   Fangrui Song <maskray@google.com> | 2021-11-02 20:59:52 -0700 |
|---|---|---|
| committer |   Andreas K. Hüttel <dilfridge@gentoo.org> | 2022-05-14 23:09:43 +0200 |
| commit | ce71053a2e67d3161692566751b69bce6342cfa7 (patch) | |
| tree | 26d39ec2e604b5a923e1085c0f40c4a6147535ee | |
| parent | x86-64: Remove Prefer_AVX2_STRCMP (diff) | |
| download | glibc-ce71053a2e67d3161692566751b69bce6342cfa7.tar.gz glibc-ce71053a2e67d3161692566751b69bce6342cfa7.tar.bz2 glibc-ce71053a2e67d3161692566751b69bce6342cfa7.zip | |
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)
(cherry picked from commit 2e64237a8744dd50f9222293275fa52e7248ff76)
| -rw-r--r-- | sysdeps/x86_64/multiarch/strcmp-sse42.S | 4 | ||||
| -rw-r--r-- | sysdeps/x86_64/strcmp.S | 4 |
2 files changed, 4 insertions, 4 deletions
diff --git a/sysdeps/x86_64/multiarch/strcmp-sse42.S b/sysdeps/x86_64/multiarch/strcmp-sse42.S index bc19547b09..6197a723b9 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 824e648230..7f8a1bc756 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 |