Add new fp flags: -fassociative-math and -freciprocal-math

Co-Authored-By: R. Clint Whaley <whaley@cs.utsa.edu>
Co-Authored-By: Richard Guenther <rguenther@suse.de>

From-SVN: r128075

1 files changed, 15 insertions, 0 deletions

diff --git a/gcc/opts.c b/gcc/opts.c
index dc5a26d..735f942 100644
--- a/gcc/opts.c
+++ b/gcc/opts.c
@@ -1559,6 +1559,10 @@ common_handle_option (size_t scode, const char *arg, int value,
       set_fast_math_flags (value);
       break;
 
+    case OPT_funsafe_math_optimizations:
+      set_unsafe_math_optimizations_flags (value);
+      break;
+
     case OPT_ffixed_:
       fix_register (arg, 1, 1);
       break;
@@ -1857,6 +1861,8 @@ set_fast_math_flags (int set)
 {
   flag_trapping_math = !set;
   flag_unsafe_math_optimizations = set;
+  flag_associative_math = set;
+  flag_reciprocal_math = set;
   flag_finite_math_only = set;
   flag_signed_zeros = !set;
   flag_errno_math = !set;
@@ -1868,6 +1874,15 @@ set_fast_math_flags (int set)
     }
 }
 
+/* When -funsafe-math-optimizations is set the following 
+   flags are set as well.  */ 
+void
+set_unsafe_math_optimizations_flags (int set)
+{
+  flag_reciprocal_math = set;
+  flag_associative_math = set;
+}
+
 /* Return true iff flags are set as if -ffast-math.  */
 bool
 fast_math_flags_set_p (void)