This series of patches fix PR61441. This patch adds REAL_VALUE_ISSIGNALING_NAN.

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

gcc/
	* real.c (real_issignaling_nan): New.
	* real.h (real_issignaling_nan, REAL_VALUE_ISSIGNALING_NAN): New.

From-SVN: r231848

gcc/ChangeLog

+2015-12-19  Sujoy Saraswati  <sujoy.saraswati@hpe.com>
+
+	PR tree-optimization/61441
+	* real.c (real_issignaling_nan): New.
+	* real.h (real_issignaling_nan, REAL_VALUE_ISSIGNALING_NAN): New.
+
 2015-13-18  John David Anglin  <danglin@gcc.gnu.org>
 
 	PR target/68729

gcc/real.c

@@ -1195,6 +1195,12 @@ real_isnan (const REAL_VALUE_TYPE *r)
   return (r->cl == rvc_nan);
 }
 
+/* Determine whether a floating-point value X is a signaling NaN.  */ 
+bool real_issignaling_nan (const REAL_VALUE_TYPE *r)
+{
+  return real_isnan (r) && r->signalling;
+}
+
 /* Determine whether a floating-point value X is finite.  */
 
 bool

gcc/real.h

@@ -262,6 +262,9 @@ extern bool real_isinf (const REAL_VALUE_TYPE *);
 /* Determine whether a floating-point value X is a NaN.  */
 extern bool real_isnan (const REAL_VALUE_TYPE *);
 
+/* Determine whether a floating-point value X is a signaling NaN.  */
+extern bool real_issignaling_nan (const REAL_VALUE_TYPE *);
+
 /* Determine whether a floating-point value X is finite.  */
 extern bool real_isfinite (const REAL_VALUE_TYPE *);
 
@@ -357,6 +360,9 @@ extern const struct real_format arm_half_format;
 /* Determine whether a floating-point value X is a NaN.  */
 #define REAL_VALUE_ISNAN(x)		real_isnan (&(x))
 
+/* Determine whether a floating-point value X is a signaling NaN.  */ 
+#define REAL_VALUE_ISSIGNALING_NAN(x)  real_issignaling_nan (&(x))
+
 /* Determine whether a floating-point value X is negative.  */
 #define REAL_VALUE_NEGATIVE(x)		real_isneg (&(x))