[PATCH] Testcase for PR82422

[Richard Biener]

Committed.

Richard.

2017-10-06  Richard Biener  <rguent...@suse.de>

        PR tree-optimization/82422
        * gcc.dg/graphite/pr82422.c: New testcase.

Index: gcc/testsuite/gcc.dg/graphite/pr82422.c
===================================================================
--- gcc/testsuite/gcc.dg/graphite/pr82422.c     (nonexistent)
+++ gcc/testsuite/gcc.dg/graphite/pr82422.c     (working copy)
@@ -0,0 +1,13 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -floop-nest-optimize -Wno-aggressive-loop-optimizations" 
} */
+
+int a;
+int b[6];
+int c ()
+{
+  int d;
+  for (; d; d++)
+    b[d] = 0;
+  for (; d < 8; d++)
+    a += b[d];
+}