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diff gcc/testsuite/gcc.dg/tree-ssa/pr21959.c @ 111:04ced10e8804

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gcc 7
author kono
date Fri, 27 Oct 2017 22:46:09 +0900
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/testsuite/gcc.dg/tree-ssa/pr21959.c	Fri Oct 27 22:46:09 2017 +0900
@@ -0,0 +1,19 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -fdump-tree-vrp1" } */
+
+unsigned char c[0xFF];
+void f(void)
+{
+  unsigned char i;
+  c[128] = 128;
+  i = 0;
+  while (1)
+  {
+    /* This predicate should not be folded out.  */
+    if (((signed char) i) < 0) break;
+    c[i] = ' ';
+    i++;
+  }
+}
+
+/* { dg-final { scan-tree-dump-times "Folding predicate " 0 "vrp1" } } */