* config/rs6000/rs6000.c (spe_init_builtins,

[pf3gnuchains/gcc-fork.git] / gcc / toplev.c

diff --git a/gcc/toplev.c b/gcc/toplev.c
index e4aeca0..9fe5cad 100644 (file)
--- a/gcc/toplev.c
+++ b/gcc/toplev.c
@@ -575,6 +575,10 @@ int flag_errno_math = 1;
 
 int flag_unsafe_math_optimizations = 0;
 
+/* Nonzero means that no NaNs or +-Infs are expected.  */
+
+int flag_finite_math_only = 0;
+
 /* Zero means that floating-point math operations cannot generate a
    (user-visible) trap.  This is the case, for example, in nonstop
    IEEE 754 arithmetic.  Trapping conditions include division by zero,
@@ -1170,6 +1174,8 @@ static const lang_independent_options f_options[] =
    N_("Process #ident directives") },
   { "peephole2", &flag_peephole2, 1,
    N_("Enables an rtl peephole pass run before sched2") },
+  {"finite-math-only", &flag_finite_math_only, 1,
+   N_("Assume no NaNs or +-Infs are generated") },
   { "guess-branch-probability", &flag_guess_branch_prob, 1,
    N_("Enables guessing of branch probabilities") },
   {"math-errno", &flag_errno_math, 1,
@@ -1575,6 +1581,7 @@ set_fast_math_flags (set)
 {
   flag_trapping_math = !set;
   flag_unsafe_math_optimizations = set;
+  flag_finite_math_only = set;
   flag_errno_math = !set;
   if (set)
     flag_signaling_nans = 0;
@@ -1586,6 +1593,7 @@ fast_math_flags_set_p ()
 {
   return (!flag_trapping_math
          && flag_unsafe_math_optimizations
+         && flag_finite_math_only
          && !flag_errno_math);
 }