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diff gcc/testsuite/gcc.dg/tree-ssa/ssa-fre-19.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/ssa-fre-19.c	Fri Oct 27 22:46:09 2017 +0900
@@ -0,0 +1,30 @@
+/* { dg-do compile } */
+/* { dg-options "-O -fdump-tree-fre1" } */
+
+struct a
+{
+  union
+  {
+    int a;
+    int b;
+  };
+  union
+  {
+    int c;
+    int d;
+  };
+  int e;
+};
+
+int f(struct a *c)
+{
+  int d;
+  c->e = 2;
+  d = c->a;
+  c->c = 1;
+  return c->a + d;
+}
+
+/* We should have CSEd the load from c->a.  */
+
+/* { dg-final { scan-tree-dump-times "c_.*\\\.a" 1 "fre1" } } */