Remove configure tests for AVX support.

GCC added support for -mavx and -msse2avx in version 4.4.  Thus the
configure tests for this support are obsolete, and this patch removes
them.

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

	* sysdeps/i386/configure.ac (libc_cv_cc_avx): Remove configure
	test.
	(libc_cv_cc_sse2avx): Likewise.
	* sysdeps/i386/configure: Regenerated.
	* sysdeps/i386/i686/multiarch/Makefile
	[$(subdir)$(config-cflags-avx) = mathyes]: Change conditional to
	[$(subdir) = math].
	* sysdeps/i386/i686/multiarch/s_fma-fma.c [HAVE_AVX_SUPPORT]: Make
	code unconditional.
	* sysdeps/i386/i686/multiarch/s_fma.c [HAVE_AVX_SUPPORT]:
	Likewise.
	* sysdeps/i386/i686/multiarch/s_fmaf-fma.c [HAVE_AVX_SUPPORT]:
	Likewise.
	* sysdeps/i386/i686/multiarch/s_fmaf.c [HAVE_AVX_SUPPORT]:
	Likewise.
	* sysdeps/x86_64/configure.ac (libc_cv_cc_avx): Remove configure
	test.
	(libc_cv_cc_sse2avx): Likewise.
	* sysdeps/x86_64/configure: Regenerated.
	* sysdeps/x86_64/Makefile [$(config-cflags-avx) = yes]: Make code
	unconditional.
	* sysdeps/x86_64/dl-trampoline.h (_dl_runtime_profile)
	[HAVE_AVX_SUPPORT || HAVE_AVX512_ASM_SUPPORT]: Make code
	unconditional.
	(_dl_runtime_profile)
	[!(HAVE_AVX_SUPPORT || HAVE_AVX512_ASM_SUPPORT)]: Remove
	conditional code.
	* sysdeps/x86_64/fpu/multiarch/Makefile
	[$(config-cflags-sse2avx) = yes]: Make code unconditional.
	* sysdeps/x86_64/fpu/multiarch/e_atan2.c
	[HAVE_FMA4_SUPPORT || HAVE_AVX_SUPPORT]: Likewise.
	* sysdeps/x86_64/fpu/multiarch/e_exp.c
	[HAVE_FMA4_SUPPORT || HAVE_AVX_SUPPORT]: Likewise.
	* sysdeps/x86_64/fpu/multiarch/e_log.c
	[HAVE_FMA4_SUPPORT || HAVE_AVX_SUPPORT]: Likewise.
	* sysdeps/x86_64/fpu/multiarch/s_atan.c
	[HAVE_FMA4_SUPPORT || HAVE_AVX_SUPPORT]: Likewise.
	* sysdeps/x86_64/fpu/multiarch/s_fma.c [HAVE_AVX_SUPPORT]:
	Likewise.
	* sysdeps/x86_64/fpu/multiarch/s_fmaf.c [HAVE_AVX_SUPPORT]:
	Likewise.
	* sysdeps/x86_64/fpu/multiarch/s_sin.c
	[HAVE_FMA4_SUPPORT || HAVE_AVX_SUPPORT]: Likewise.
	* sysdeps/x86_64/fpu/multiarch/s_tan.c
	[HAVE_FMA4_SUPPORT || HAVE_AVX_SUPPORT]: Likewise.
	* sysdeps/x86_64/multiarch/strcmp.S [HAVE_AVX_SUPPORT]: Likewise.
	* config.h.in (HAVE_AVX_SUPPORT): Remove #undef.
	(HAVE_SSE2AVX_SUPPORT): Likewise.

7 files changed, 3 insertions, 83 deletions

diff --git a/sysdeps/i386/configure b/sysdeps/i386/configure
index 8a7837ec46..1b39cbae08 100644
--- a/sysdeps/i386/configure
+++ b/sysdeps/i386/configure
@@ -114,58 +114,6 @@ $as_echo "$libc_cv_as_i686" >&6; }
 config_vars="$config_vars
 config-asflags-i686 = $libc_cv_as_i686"
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for AVX support" >&5
-$as_echo_n "checking for AVX support... " >&6; }
-if ${libc_cv_cc_avx+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  if { ac_try='${CC-cc} -mavx -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_avx=yes
-else
-  libc_cv_cc_avx=no
-fi
-
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_cc_avx" >&5
-$as_echo "$libc_cv_cc_avx" >&6; }
-if test $libc_cv_cc_avx = yes; then
-  $as_echo "#define HAVE_AVX_SUPPORT 1" >>confdefs.h
-
-fi
-config_vars="$config_vars
-config-cflags-avx = $libc_cv_cc_avx"
-
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for AVX encoding of SSE instructions" >&5
-$as_echo_n "checking for AVX encoding of SSE instructions... " >&6; }
-if ${libc_cv_cc_sse2avx+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  if { ac_try='${CC-cc} -msse2avx -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_sse2avx=yes
-else
-  libc_cv_cc_sse2avx=no
-fi
-
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_cc_sse2avx" >&5
-$as_echo "$libc_cv_cc_sse2avx" >&6; }
-if test $libc_cv_cc_sse2avx = yes; then
-  $as_echo "#define HAVE_SSE2AVX_SUPPORT 1" >>confdefs.h
-
-fi
-config_vars="$config_vars
-config-cflags-sse2avx = $libc_cv_cc_sse2avx"
-
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for FMA4 support" >&5
 $as_echo_n "checking for FMA4 support... " >&6; }
 if ${libc_cv_cc_fma4+:} false; then :
diff --git a/sysdeps/i386/configure.ac b/sysdeps/i386/configure.ac
index e7af05600f..965fa73489 100644
--- a/sysdeps/i386/configure.ac
+++ b/sysdeps/i386/configure.ac
@@ -42,26 +42,6 @@ LIBC_TRY_CC_OPTION([-Wa,-mtune=i686],
 ])
 LIBC_CONFIG_VAR([config-asflags-i686], [$libc_cv_as_i686])
 
-dnl Check if -mavx works.
-AC_CACHE_CHECK(for AVX support, libc_cv_cc_avx, [dnl
-LIBC_TRY_CC_OPTION([-mavx], [libc_cv_cc_avx=yes], [libc_cv_cc_avx=no])
-])
-if test $libc_cv_cc_avx = yes; then
-  AC_DEFINE(HAVE_AVX_SUPPORT)
-fi
-LIBC_CONFIG_VAR([config-cflags-avx], [$libc_cv_cc_avx])
-
-dnl Check if -msse2avx works.
-AC_CACHE_CHECK(for AVX encoding of SSE instructions, libc_cv_cc_sse2avx, [dnl
-LIBC_TRY_CC_OPTION([-msse2avx],
-		   [libc_cv_cc_sse2avx=yes],
-		   [libc_cv_cc_sse2avx=no])
-])
-if test $libc_cv_cc_sse2avx = yes; then
-  AC_DEFINE(HAVE_SSE2AVX_SUPPORT)
-fi
-LIBC_CONFIG_VAR([config-cflags-sse2avx], [$libc_cv_cc_sse2avx])
-
 dnl Check if -mfma4 works.
 AC_CACHE_CHECK(for FMA4 support, libc_cv_cc_fma4, [dnl
 LIBC_TRY_CC_OPTION([-mfma4], [libc_cv_cc_fma4=yes], [libc_cv_cc_fma4=no])
diff --git a/sysdeps/i386/i686/multiarch/Makefile b/sysdeps/i386/i686/multiarch/Makefile
index 7ccd9c7b79..700010d969 100644
--- a/sysdeps/i386/i686/multiarch/Makefile
+++ b/sysdeps/i386/i686/multiarch/Makefile
@@ -38,7 +38,7 @@ sysdep_routines += wcscmp-sse2 wcscmp-c wcslen-sse2 wcslen-c \
 		   wcschr-c wcsrchr-sse2 wcsrchr-c wcscpy-ssse3 wcscpy-c
 endif
 
-ifeq (mathyes,$(subdir)$(config-cflags-avx))
+ifeq ($(subdir),math)
 libm-sysdep_routines += s_fma-fma s_fmaf-fma
 CFLAGS-s_fma-fma.c += -mavx -mfpmath=sse
 CFLAGS-s_fmaf-fma.c += -mavx -mfpmath=sse
diff --git a/sysdeps/i386/i686/multiarch/s_fma-fma.c b/sysdeps/i386/i686/multiarch/s_fma-fma.c
index 1a8b48bd58..23a7f04e12 100644
--- a/sysdeps/i386/i686/multiarch/s_fma-fma.c
+++ b/sysdeps/i386/i686/multiarch/s_fma-fma.c
@@ -19,11 +19,9 @@
 
 #include <config.h>
 
-#ifdef HAVE_AVX_SUPPORT
 double
 __fma_fma (double x, double y, double z)
 {
   asm ("vfmadd213sd %3, %2, %0" : "=x" (x) : "0" (x), "x" (y), "xm" (z));
   return x;
 }
-#endif
diff --git a/sysdeps/i386/i686/multiarch/s_fma.c b/sysdeps/i386/i686/multiarch/s_fma.c
index cf2ede5309..8d918f0650 100644
--- a/sysdeps/i386/i686/multiarch/s_fma.c
+++ b/sysdeps/i386/i686/multiarch/s_fma.c
@@ -19,7 +19,6 @@
 
 #include <config.h>
 
-#ifdef HAVE_AVX_SUPPORT
 #include <math.h>
 #include <init-arch.h>
 
@@ -30,7 +29,6 @@ libm_ifunc (__fma,
 	    HAS_ARCH_FEATURE (FMA_Usable) ? __fma_fma : __fma_ia32);
 weak_alias (__fma, fma)
 
-# define __fma __fma_ia32
-#endif
+#define __fma __fma_ia32
 
 #include <sysdeps/ieee754/ldbl-96/s_fma.c>
diff --git a/sysdeps/i386/i686/multiarch/s_fmaf-fma.c b/sysdeps/i386/i686/multiarch/s_fmaf-fma.c
index 1775ef5dd0..4904f05eed 100644
--- a/sysdeps/i386/i686/multiarch/s_fmaf-fma.c
+++ b/sysdeps/i386/i686/multiarch/s_fmaf-fma.c
@@ -19,11 +19,9 @@
 
 #include <config.h>
 
-#ifdef HAVE_AVX_SUPPORT
 float
 __fmaf_fma (float x, float y, float z)
 {
   asm ("vfmadd213ss %3, %2, %0" : "=x" (x) : "0" (x), "x" (y), "xm" (z));
   return x;
 }
-#endif
diff --git a/sysdeps/i386/i686/multiarch/s_fmaf.c b/sysdeps/i386/i686/multiarch/s_fmaf.c
index 526cdf16e4..2476d0fcbf 100644
--- a/sysdeps/i386/i686/multiarch/s_fmaf.c
+++ b/sysdeps/i386/i686/multiarch/s_fmaf.c
@@ -19,7 +19,6 @@
 
 #include <config.h>
 
-#ifdef HAVE_AVX_SUPPORT
 #include <math.h>
 #include <init-arch.h>
 
@@ -30,7 +29,6 @@ libm_ifunc (__fmaf,
 	    HAS_ARCH_FEATURE (FMA_Usable) ? __fmaf_fma : __fmaf_ia32);
 weak_alias (__fmaf, fmaf)
 
-# define __fmaf __fmaf_ia32
-#endif
+#define __fmaf __fmaf_ia32
 
 #include <sysdeps/ieee754/dbl-64/s_fmaf.c>