From 2b35e48c0c547b3f6f81996ce7ad7d67e24c7329 Mon Sep 17 00:00:00 2001 From: "H.J. Lu" Date: Tue, 8 Mar 2016 10:57:31 -0800 Subject: [PATCH] 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. --- ChangeLog | 5 +++++ sysdeps/x86/bits/string.h | 3 +++ 2 files changed, 8 insertions(+) diff --git a/ChangeLog b/ChangeLog index 585c9c2d2e..4a7e0191fd 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,8 @@ +2016-03-08 H.J. Lu + + [BZ #19759] + * sysdeps/x86/bits/string.h (_HAVE_STRING_ARCH_mempcpy): New. + 2016-03-08 Gabriel F. T. Gomes * 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__ \