match.pd (((m1 >/</>=/<= m2) * d -> (m1 >/</>=/<= m2) ? d : 0): New pattern.

gcc
	* match.pd (((m1 >/</>=/<= m2) * d -> (m1 >/</>=/<= m2) ? d : 0):
	New pattern.

gcc/testsuite
	* gcc.dg/tree-ssa/vrp116.c: New Test.

From-SVN: r250377

gcc/ChangeLog

+2017-07-20  Naveen H.S  <Naveen.Hurugalawadi@cavium.com>
+
+	* match.pd (((m1 >/</>=/<= m2) * d -> (m1 >/</>=/<= m2) ? d : 0):
+	New pattern.
+
 2017-07-19  Jan Hubicka  <hubicka@ucw.cz>
 
 	PR middle-end/81331

gcc/match.pd

@@ -1089,6 +1089,12 @@ DEFINE_INT_AND_FLOAT_ROUND_FN (RINT)
       && tree_nop_conversion_p (type, TREE_TYPE (@1)))
   (convert (bit_and (bit_not @1) @0))))
 
+/* (m1 CMP m2) * d -> (m1 CMP m2) ? d : 0  */
+(for cmp (gt lt ge le)
+(simplify
+ (mult (convert (cmp @0 @1)) @2)
+  (cond (cmp @0 @1) @2 { build_zero_cst (type); })))
+
 /* For integral types with undefined overflow and C != 0 fold
    x * C EQ/NE y * C into x EQ/NE y.  */
 (for cmp (eq ne)

gcc/testsuite/ChangeLog

+2017-07-20  Naveen H.S  <Naveen.Hurugalawadi@cavium.com>
+
+	* gcc.dg/tree-ssa/vrp116.c: New Test.
+
 2017-07-19  Michael Meissner  <meissner@linux.vnet.ibm.com>
 
 	* gcc.target/powerpc/cpu-builtin-1.c: Change test to use #ifdef

gcc/testsuite/gcc.dg/tree-ssa/vrp116.c

+/* { dg-do compile } */
+/* { dg-options "-O2 -fdump-tree-vrp1" } */
+
+int
+f (int m1, int m2, int c)
+{
+  int d = m1 > m2;
+  int e = d * c;
+  return e ? m1 : m2;
+}
+
+/* { dg-final { scan-tree-dump-times "\\? c_\[0-9\]\\(D\\) : 0" 1 "vrp1" } } */