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Re: [PATCH] Fix VRP register_edge_assert_for_1 (PR tree-optimization/59014)


On Tue, Nov 26, 2013 at 02:15:58PM -0700, Jeff Law wrote:
> On 11/26/13 13:33, Jakub Jelinek wrote:
> >Bootstrapped/regtested on x86_64-linux and i686-linux, ok for trunk?
> >
> >I'll try to create a testcase for 4.8 branch tomorrow.

I've managed to create a testcase which reproduces this on 4.8 too,
so I've committed it to trunk and committed both the patch from yesterday
and this one to 4.8 branch too.

2013-11-27  Jakub Jelinek  <jakub@redhat.com>

	PR tree-optimization/59014
	* gcc.c-torture/execute/pr59014-2.c: New test.

--- gcc/testsuite/gcc.c-torture/execute/pr59014-2.c	2013-08-25 18:20:55.717911035 +0200
+++ gcc/testsuite/gcc.c-torture/execute/pr59014-2.c	2013-11-27 15:31:09.833340947 +0100
@@ -0,0 +1,23 @@
+/* PR tree-optimization/59014 */
+
+__attribute__((noinline, noclone)) long long int
+foo (long long int x, long long int y)
+{
+  if (((int) x | (int) y) != 0)
+    return 6;
+  return x + y;
+}
+
+int
+main ()
+{
+  if (sizeof (long long) == sizeof (int))
+    return 0;
+  int shift_half = sizeof (int) * __CHAR_BIT__ / 2;
+  long long int x = (3LL << shift_half) << shift_half;
+  long long int y = (5LL << shift_half) << shift_half;
+  long long int z = foo (x, y);
+  if (z != ((8LL << shift_half) << shift_half))
+    __builtin_abort ();
+  return 0;
+}


	Jakub


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