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| author | H.J. Lu <hjl.tools@gmail.com> | 2016-03-08 10:57:31 -0800 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2016-03-08 10:57:41 -0800 |
| commit | 2b35e48c0c547b3f6f81996ce7ad7d67e24c7329 (patch) | |
| tree | 12b1f52140c9e9a68d2eba4fd3fe6273ee5f6966 | |
| parent | 183a34dc4a07cad723cd78e494d16a5ef0b6a63e (diff) | |
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Define _HAVE_STRING_ARCH_mempcpy to 1 for x86
Since x86 has an optimized mempcpy and GCC can inline mempcpy on x86,
define _HAVE_STRING_ARCH_mempcpy to 1 for x86.
[BZ #19759]
* sysdeps/x86/bits/string.h (_HAVE_STRING_ARCH_mempcpy): New.
| -rw-r--r-- | ChangeLog | 5 | ||||
| -rw-r--r-- | sysdeps/x86/bits/string.h | 3 |
2 files changed, 8 insertions, 0 deletions
@@ -1,3 +1,8 @@ +2016-03-08 H.J. Lu <hongjiu.lu@intel.com> + + [BZ #19759] + * sysdeps/x86/bits/string.h (_HAVE_STRING_ARCH_mempcpy): New. + 2016-03-08 Gabriel F. T. Gomes <gftg@linux.vnet.ibm.com> * sysdeps/powerpc/bits/fenvinline.h (feraiseexcept): Remove use of %s diff --git a/sysdeps/x86/bits/string.h b/sysdeps/x86/bits/string.h index e4e019f1fc..8dfce052a6 100644 --- a/sysdeps/x86/bits/string.h +++ b/sysdeps/x86/bits/string.h @@ -23,6 +23,9 @@ /* Use the unaligned string inline ABI. */ #define _STRING_INLINE_unaligned 1 +/* Don't inline mempcpy into memcpy as x86 has an optimized mempcpy. */ +#define _HAVE_STRING_ARCH_mempcpy 1 + /* Enable inline functions only for i486 or better when compiling for ia32. */ #if !defined __x86_64__ && (defined __i486__ || defined __pentium__ \ |