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[committed] Add testcase for PR tree-optimization/53505


Hi!

As we have no short testcase for PR53438, I've committed
the following testcase as obvious to trunk and 4.7.

2012-05-28  Jakub Jelinek  <jakub@redhat.com>

	PR tree-optimization/53505
	* c-c++-common/torture/pr53505.c: New test.

--- gcc/testsuite/c-c++-common/torture/pr53505.c.jj	2012-05-28 16:20:13.927753639 +0200
+++ gcc/testsuite/c-c++-common/torture/pr53505.c	2012-05-28 16:20:52.832528256 +0200
@@ -0,0 +1,42 @@
+/* PR tree-optimization/53505 */
+/* { dg-do run } */
+
+#include <stdbool.h>
+
+struct A
+{
+  unsigned int a;
+  unsigned char c1, c2;
+  bool b1 : 1;
+  bool b2 : 1;
+  bool b3 : 1;
+};
+
+void
+foo (const struct A *x, int y)
+{
+  int s = 0, i;
+  for (i = 0; i < y; ++i)
+    {
+      const struct A a = x[i];
+      s += a.b1 ? 1 : 0;
+    }
+  if (s != 0)
+    __builtin_abort ();
+}
+
+int
+main ()
+{
+  struct A x[100];
+  int i;
+  __builtin_memset (x, -1, sizeof (x));
+  for (i = 0; i < 100; i++)
+    {
+      x[i].b1 = false;
+      x[i].b2 = false;
+      x[i].b3 = false;
+    }
+  foo (x, 100);
+  return 0;
+}

	Jakub


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