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| author | H.J. Lu <hjl.tools@gmail.com> | 2017-05-30 12:39:14 -0700 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2017-05-30 12:39:14 -0700 |
| commit | 4f26ef1b67287d1f2c32865f7d79c13abda81915 (patch) | |
| tree | bc9cb0c0b5c581cee6aba4f2fc138b48783ab565 /sysdeps/x86_64/strrchr.S | |
| parent | 542a34783ce1cfc63929ec50ab1f9f738711b815 (diff) | |
| download | glibc-4f26ef1b67287d1f2c32865f7d79c13abda81915.zip glibc-4f26ef1b67287d1f2c32865f7d79c13abda81915.tar.gz glibc-4f26ef1b67287d1f2c32865f7d79c13abda81915.tar.bz2 | |
x86_64: Remove redundant REX bytes from memchr.S
By x86-64 specification, 32-bit destination registers are zero-extended
to 64 bits. There is no need to use 64-bit registers when only the lower
32 bits are non-zero.
* sysdeps/x86_64/memchr.S (MEMCHR): Use 32-bit registers for
the lower 32 bits.
Diffstat (limited to 'sysdeps/x86_64/strrchr.S')
0 files changed, 0 insertions, 0 deletions