This series of patches fix PR61441.

This series of patches fix PR61441. This patch removes flag_errno_math check
for RINT, treating it similar to nearbyint.

Bootstrapped & regression-tested on x86_64-linux-gnu.

gcc/
	* match.pd (f(x) -> x): Removed flag_errno_math check for RINT.

From-SVN: r231858

gcc/ChangeLog

 2015-12-20  Sujoy Saraswati  <sujoy.saraswati@hpe.com>
 
 	PR tree-optimization/61441
+	* match.pd (f(x) -> x): Removed flag_errno_math check for RINT.
+
+2015-12-20  Sujoy Saraswati  <sujoy.saraswati@hpe.com>
+
+	PR tree-optimization/61441
 	* fold-const.c (const_binop): Use REAL_VALUE_ISSIGNALING_NAN instead
 	of REAL_VALUE_ISNAN to avoid the operation for sNaN operands.
 	* simplify-rtx.c (simplify_const_binary_operation): Same.

gcc/match.pd

@@ -2566,16 +2566,10 @@ DEFINE_INT_AND_FLOAT_ROUND_FN (RINT)
   (fns (fns @0))
   (fns @0)))
 /* f(x) -> x if x is integer valued and f does nothing for such values.  */
-(for fns (TRUNC FLOOR CEIL ROUND NEARBYINT)
+(for fns (TRUNC FLOOR CEIL ROUND NEARBYINT RINT)
  (simplify
   (fns integer_valued_real_p@0)
   @0))
-/* Same for rint.  We have to check flag_errno_math because
-   integer_valued_real_p accepts +Inf, -Inf and NaNs as integers.  */
-(if (!flag_errno_math)
- (simplify
-  (RINT integer_valued_real_p@0)
-  @0))
 
 /* hypot(x,0) and hypot(0,x) -> abs(x).  */
 (simplify