From c871b9b096e107fe6220e18102f5fb8070b49819 Mon Sep 17 00:00:00 2001
From: Joseph Myers <joseph@codesourcery.com>
Date: Wed, 28 Oct 2015 13:29:03 +0000
Subject: Remove -mavx2 configure tests.

There are configure tests for the -mavx2 compiler option.  AVX2
support was added in GCC 4.7, so these tests are now obsolete; this
patch removes them.

Tested for x86_64 and x86 (testsuite, and that installed stripped
shared libraries are unchanged by the patch).

	* sysdeps/i386/configure.ac (libc_cv_cc_avx2): Remove configure
	test.
	* sysdeps/i386/configure: Regenerated.
	* sysdeps/x86_64/configure.ac (libc_cv_cc_avx2): Remove configure
	test.
	* sysdeps/x86_64/configure: Regenerated.
	* config.h.in (HAVE_AVX2_SUPPORT): Remove #undef.
	* sysdeps/x86_64/multiarch/Makefile (sysdep_routines): Add
	memset-avx2 unconditionally instead of conditionally on
	[$(config-cflags-avx2) = yes].
	* sysdeps/x86_64/multiarch/ifunc-impl-list.c
	(__libc_ifunc_impl_list) [HAVE_AVX2_SUPPORT]: Make code
	unconditional.
	* sysdeps/x86_64/multiarch/memset.S [HAVE_AVX2_SUPPORT]: Likewise.
	* sysdeps/x86_64/multiarch/memset_chk.S
	[IS_IN (libc) && SHARED && HAVE_AVX2_SUPPORT]: Change conditional
	to [IS_IN (libc) && SHARED].
---
 sysdeps/i386/configure    | 26 --------------------------
 sysdeps/i386/configure.ac |  9 ---------
 2 files changed, 35 deletions(-)

(limited to 'sysdeps/i386')

diff --git a/sysdeps/i386/configure b/sysdeps/i386/configure
index 1fc13aba6b..9ae13d6d69 100644
--- a/sysdeps/i386/configure
+++ b/sysdeps/i386/configure
@@ -119,32 +119,6 @@ if test $libc_cv_asm_mpx == yes; then
 
 fi
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for AVX2 support" >&5
-$as_echo_n "checking for AVX2 support... " >&6; }
-if ${libc_cv_cc_avx2+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  if { ac_try='${CC-cc} -mavx2 -xc /dev/null -S -o /dev/null'
-  { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
-  test $ac_status = 0; }; }; then :
-  libc_cv_cc_avx2=yes
-else
-  libc_cv_cc_avx2=no
-fi
-
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_cc_avx2" >&5
-$as_echo "$libc_cv_cc_avx2" >&6; }
-if test $libc_cv_cc_avx2 = yes; then
-  $as_echo "#define HAVE_AVX2_SUPPORT 1" >>confdefs.h
-
-fi
-config_vars="$config_vars
-config-cflags-avx2 = $libc_cv_cc_avx2"
-
 $as_echo "#define USE_REGPARMS 1" >>confdefs.h
 
 
diff --git a/sysdeps/i386/configure.ac b/sysdeps/i386/configure.ac
index 7f2e4ccd01..609f147089 100644
--- a/sysdeps/i386/configure.ac
+++ b/sysdeps/i386/configure.ac
@@ -49,15 +49,6 @@ if test $libc_cv_asm_mpx == yes; then
   AC_DEFINE(HAVE_MPX_SUPPORT)
 fi
 
-dnl Check if -mavx2 works.
-AC_CACHE_CHECK(for AVX2 support, libc_cv_cc_avx2, [dnl
-LIBC_TRY_CC_OPTION([-mavx2], [libc_cv_cc_avx2=yes], [libc_cv_cc_avx2=no])
-])
-if test $libc_cv_cc_avx2 = yes; then
-  AC_DEFINE(HAVE_AVX2_SUPPORT)
-fi
-LIBC_CONFIG_VAR([config-cflags-avx2], [$libc_cv_cc_avx2])
-
 AC_DEFINE(USE_REGPARMS)
 
 dnl It is always possible to access static and hidden symbols in an
-- 
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