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Define _HAVE_STRING_ARCH_mempcpy to 1 for x86

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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.
This commit is contained in:
H.J. Lu
2016-03-08 10:57:31 -08:00
parent 183a34dc4a
commit 2b35e48c0c
2 changed files with 8 additions and 0 deletions
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ChangeLog
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@ -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> 2016-03-08 Gabriel F. T. Gomes <gftg@linux.vnet.ibm.com>
* sysdeps/powerpc/bits/fenvinline.h (feraiseexcept): Remove use of %s * sysdeps/powerpc/bits/fenvinline.h (feraiseexcept): Remove use of %s

3
sysdeps/x86/bits/string.h
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@ -23,6 +23,9 @@
/* Use the unaligned string inline ABI. */ /* Use the unaligned string inline ABI. */
#define _STRING_INLINE_unaligned 1 #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 /* Enable inline functions only for i486 or better when compiling for
ia32. */ ia32. */
#if !defined __x86_64__ && (defined __i486__ || defined __pentium__ \ #if !defined __x86_64__ && (defined __i486__ || defined __pentium__ \