Fix libgfortran FMA3/FMA4 tests

[thirdparty/gcc.git] / libgfortran / acinclude.m4

diff --git a/libgfortran/acinclude.m4 b/libgfortran/acinclude.m4
index b501a5e4ef9e229574a3c4933d12152e73a5196a..90df4eea7b763f56d4910709b5525bc361786740 100644 (file)
--- a/libgfortran/acinclude.m4
+++ b/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.]),