misc.c (gnat_init_gcc_fp(): Set flag_errno_math to 0.

2014-07-31  Doug Rupp  <rupp@adacore.com>
                                        
	* gcc-interface/misc.c (gnat_init_gcc_fp(): Set flag_errno_math to 0.

From-SVN: r213355

gcc/ada/ChangeLog

+2014-07-31  Doug Rupp  <rupp@adacore.com>
+
+	* gcc-interface/misc.c (gnat_init_gcc_fp(): Set flag_errno_math to 0.
+
 2014-07-31  Hristian Kirtchev  <kirtchev@adacore.com>
 
 	* sem_util.adb (Is_Effectively_Volatile): New routine.

gcc/ada/gcc-interface/misc.c

@@ -414,6 +414,11 @@ gnat_init_gcc_fp (void)
     flag_trapping_math = 1;
   else if (!global_options_set.x_flag_trapping_math)
     flag_trapping_math = 0;
+
+  /* We don't care in Ada about errno, and it causes __builtin_sqrt to
+     to call the libm function rather than do it inline.  */
+  if (!global_options_set.x_flag_errno_math)
+    flag_errno_math = 0;
 }
 
 /* Print language-specific items in declaration NODE.  */