c-common.c (cb_register_builtins): Set __FINITE_MATH_ONLY__ to 1 if…

c-common.c (cb_register_builtins): Set __FINITE_MATH_ONLY__ to 1 if -ffinite-math-only is given, and to 0 otherwise.

2002-08-01  Toon Moene  <toon@moene.indiv.nluug.nl>

	* c-common.c (cb_register_builtins): Set
	__FINITE_MATH_ONLY__ to 1 if -ffinite-math-only
	is given, and to 0 otherwise.
	* combine.c (simplify_if_then_else): HONOR_NANS
	implies FLOAT_MODE_P.

From-SVN: r55932

gcc/ChangeLog

+2002-08-01  Toon Moene  <toon@moene.indiv.nluug.nl>
+
+	* c-common.c (cb_register_builtins): Set
+	__FINITE_MATH_ONLY__ to 1 if -ffinite-math-only
+	is given, and to 0 otherwise.
+	* combine.c (simplify_if_then_else): HONOR_NANS
+	implies FLOAT_MODE_P.
+
 2002-08-01  Neil Booth  <neil@daikokuya.co.uk>
 
 	* cppinit.c (COMMAND_LINE_OPTIONS): Remove OPT_dollar.

gcc/c-common.c

@@ -4784,7 +4784,9 @@ cb_register_builtins (pfile)
   if (flag_signaling_nans)
     cpp_define (pfile, "__SUPPORT_SNAN__");
   if (flag_finite_math_only)
-    cpp_define (pfile, "__FINITE_MATH_ONLY__");
+    cpp_define (pfile, "__FINITE_MATH_ONLY__=1");
+  else
+    cpp_define (pfile, "__FINITE_MATH_ONLY__=0");
 
   if (flag_iso)
     cpp_define (pfile, "__STRICT_ANSI__");

gcc/combine.c

@@ -4775,12 +4775,12 @@ simplify_if_then_else (x)
 
   /* Convert a == b ? b : a to "a".  */
   if (true_code == EQ && ! side_effects_p (cond)
-      && (!FLOAT_MODE_P (mode) || !HONOR_NANS (mode))
+      && !HONOR_NANS (mode)
       && rtx_equal_p (XEXP (cond, 0), false_rtx)
       && rtx_equal_p (XEXP (cond, 1), true_rtx))
     return false_rtx;
   else if (true_code == NE && ! side_effects_p (cond)
-	   && (!FLOAT_MODE_P (mode) || !HONOR_NANS (mode))
+	   && !HONOR_NANS (mode)
 	   && rtx_equal_p (XEXP (cond, 0), true_rtx)
 	   && rtx_equal_p (XEXP (cond, 1), false_rtx))
     return true_rtx;