Fix libgfortran FMA3/FMA4 tests

	* acinclude.m4 (LIBGFOR_CHECK_FMA3): Use test from
	check_effective_target_fma in gcc.target/i386/i386.exp.
	(LIBGFOR_CHECK_FMA4): Use test from check_effective_target_fma4.
	* configure: Regenerate.

From-SVN: r248547

libgfortran/ChangeLog

+2017-05-28  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
+
+	* acinclude.m4 (LIBGFOR_CHECK_FMA3): Use test from
+	check_effective_target_fma in gcc.target/i386/i386.exp.
+	(LIBGFOR_CHECK_FMA4): Use test from check_effective_target_fma4.
+	* configure: Regenerate.
+
 2017-05-26  Thomas Koenig  <tkoenig@gcc.gnu.org>
 
 	PR boostrap/80889

libgfortran/acinclude.m4

@@ -459,10 +459,13 @@ AC_DEFUN([LIBGFOR_CHECK_FMA3], [
   ac_save_CFLAGS="$CFLAGS"
   CFLAGS="-O2 -mfma -mno-fma4"
   AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
-	float
-	flt_mul_add (float a, float b, float c)
+        typedef float __m128 __attribute__ ((__vector_size__ (16)));
+	typedef float __v4sf __attribute__ ((__vector_size__ (16)));
+	__m128 _mm_macc_ps(__m128 __A, __m128 __B, __m128 __C)
 	{
-		return __builtin_fmaf (a, b, c);
+	    return (__m128) __builtin_ia32_vfmaddps ((__v4sf)__A,
+						     (__v4sf)__B,
+						     (__v4sf)__C);
         }]], [[]])],
 	AC_DEFINE(HAVE_FMA3, 1,
 	[Define if FMA3 instructions can be compiled.]),
@@ -476,10 +479,13 @@ AC_DEFUN([LIBGFOR_CHECK_FMA4], [
   ac_save_CFLAGS="$CFLAGS"
   CFLAGS="-O2 -mfma4 -mno-fma"
   AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
-	float
-	flt_mul_add (float a, float b, float c)
+        typedef float __m128 __attribute__ ((__vector_size__ (16)));
+	typedef float __v4sf __attribute__ ((__vector_size__ (16)));
+	__m128 _mm_macc_ps(__m128 __A, __m128 __B, __m128 __C)
 	{
-		return __builtin_fmaf (a, b, c);
+	    return (__m128) __builtin_ia32_vfmaddps ((__v4sf)__A,
+						     (__v4sf)__B,
+						     (__v4sf)__C);
         }]], [[]])],
 	AC_DEFINE(HAVE_FMA4, 1,
 	[Define if FMA4 instructions can be compiled.]),

libgfortran/configure

@@ -26372,10 +26372,13 @@ rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
-	float
-	flt_mul_add (float a, float b, float c)
+        typedef float __m128 __attribute__ ((__vector_size__ (16)));
+	typedef float __v4sf __attribute__ ((__vector_size__ (16)));
+	__m128 _mm_macc_ps(__m128 __A, __m128 __B, __m128 __C)
 	{
-		return __builtin_fmaf (a, b, c);
+	    return (__m128) __builtin_ia32_vfmaddps ((__v4sf)__A,
+						     (__v4sf)__B,
+						     (__v4sf)__C);
         }
 int
 main ()
@@ -26401,10 +26404,13 @@ rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
-	float
-	flt_mul_add (float a, float b, float c)
+        typedef float __m128 __attribute__ ((__vector_size__ (16)));
+	typedef float __v4sf __attribute__ ((__vector_size__ (16)));
+	__m128 _mm_macc_ps(__m128 __A, __m128 __B, __m128 __C)
 	{
-		return __builtin_fmaf (a, b, c);
+	    return (__m128) __builtin_ia32_vfmaddps ((__v4sf)__A,
+						     (__v4sf)__B,
+						     (__v4sf)__C);
         }
 int
 main ()