Enable AVX2 optimized memset only if -mavx2 works
commitf2fef657d8736c32fb600771949f59852558b11a
authorH.J. Lu <hjl.tools@gmail.com>
Mon, 14 Jul 2014 14:58:27 +0000 (14 07:58 -0700)
committerH.J. Lu <hjl.tools@gmail.com>
Mon, 14 Jul 2014 14:58:27 +0000 (14 07:58 -0700)
treea9e954223fa5cbd9e53f143e0f50c6f6276ebe0c
parentf6c44d475104e931bab2b4ffa499961088de673c
Enable AVX2 optimized memset only if -mavx2 works

* config.h.in (HAVE_AVX2_SUPPORT): New #undef.
* sysdeps/i386/configure.ac: Set HAVE_AVX2_SUPPORT and
config-cflags-avx2.
* sysdeps/x86_64/configure.ac: Likewise.
* sysdeps/i386/configure: Regenerated.
* sysdeps/x86_64/configure: Likewise.
* sysdeps/x86_64/multiarch/Makefile (sysdep_routines): Add
memset-avx2 only if config-cflags-avx2 is yes.
* sysdeps/x86_64/multiarch/ifunc-impl-list.c (__libc_ifunc_impl_list):
Tests for memset_chk and memset only if HAVE_AVX2_SUPPORT is
defined.
* sysdeps/x86_64/multiarch/memset.S: Define multiple versions
only if HAVE_AVX2_SUPPORT is defined.
* sysdeps/x86_64/multiarch/memset_chk.S: Likewise.
ChangeLog
config.h.in
sysdeps/i386/configure
sysdeps/i386/configure.ac
sysdeps/x86_64/configure
sysdeps/x86_64/configure.ac
sysdeps/x86_64/multiarch/Makefile
sysdeps/x86_64/multiarch/ifunc-impl-list.c
sysdeps/x86_64/multiarch/memset.S
sysdeps/x86_64/multiarch/memset_chk.S