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[committed] Add testcase for PR tree-optimization/50765

Message ID 20111122142514.GQ27242@tyan-ft48-01.lab.bos.redhat.com
State New
Headers show

Commit Message

Jakub Jelinek Nov. 22, 2011, 2:25 p.m. UTC 
Hi!

This PR got fixed by my recent vectorizable_conversion changes,
in particular the truncation of the vec_oprnds[01] vectors on
multistep type promotion if copies > 1.

Testcase tested on x86_64-linux and i686-linux, checked in as obvious.

2011-11-22  Jakub Jelinek  <jakub@redhat.com>

	PR tree-optimization/50765
	* gcc.dg/pr50765.c: New test.


	Jakub
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Patch

--- gcc/testsuite/gcc.dg/pr50765.c.jj	2011-11-22 11:43:17.614794630 +0100
+++ gcc/testsuite/gcc.dg/pr50765.c	2011-11-22 11:43:05.000000000 +0100
@@ -0,0 +1,10 @@ 
+/* PR tree-optimization/50765 */
+/* { dg-do compile } */
+/* { dg-options "-O3 -fno-tree-dce" } */
+
+void
+foo (long *w, long *x, unsigned char *y, int z)
+{
+  for (; z < 429; z++)
+    w[z] = (-19 ^ y[z]) & x[z];
+}