From patchwork Fri Jul 23 17:03:02 2010
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Subject: Fix ICE in vectorizable_store (PR tree-optimization/45047)
Date: Fri, 23 Jul 2010 07:03:02 -0000
From: Jakub Jelinek <jakub@redhat.com>
X-Patchwork-Id: 59825
Message-Id: <20100723170302.GJ18378@tyan-ft48-01.lab.bos.redhat.com>
To: gcc-patches@gcc.gnu.org

Hi!

Another fixup for the PR44284 backport to 4.5 branch, the test
was ICEing on s390-linux with -m31 -O3.

Fixed thusly, committed to branch.  Will commit the testcase to trunk too.

2010-07-23  Jakub Jelinek  <jakub@redhat.com>
	    Richard Guenther  <rguenther@suse.de>

	PR tree-optimization/45047
	* tree-vect-stmts.c (vectorizable_assignment): Return false
	if vectype_out is NULL for conversion statement.

	* gcc.c-torture/compile/pr45047.c: New test.


	Jakub


--- gcc/tree-vect-stmts.c	(revision 162467)
+++ gcc/tree-vect-stmts.c	(working copy)
@@ -1862,6 +1862,7 @@ vectorizable_assignment (gimple stmt, gi
     = get_vectype_for_scalar_type (TREE_TYPE (gimple_assign_lhs (stmt)));
   if (CONVERT_EXPR_CODE_P (code)
       && (!vectype_in
+	  || !vectype_out      
 	  || (TYPE_VECTOR_SUBPARTS (vectype_out)
 	      != TYPE_VECTOR_SUBPARTS (vectype_in))
 	  || (GET_MODE_SIZE (TYPE_MODE (vectype_out))
--- gcc/testsuite/gcc.c-torture/compile/pr45047.c	(revision 0)
+++ gcc/testsuite/gcc.c-torture/compile/pr45047.c	(revision 0)
@@ -0,0 +1,9 @@
+/* PR tree-optimization/45047 */
+
+void
+foo (const unsigned short *w, char *x, int y, int z)
+{
+  int i;
+  for (i = 0; i < y; i++)
+    x[i] = w[i] == z;
+}