re PR tree-optimization/59523 (r205856 caused internal compiler error: verify_ssa failed)

	PR tree-optimization/59523
	* tree-vectorizer.c (fold_loop_vectorized_call): Call update_stmt
	on updated stmts.

	* gcc.dg/pr59523.c: New test.

From-SVN: r206069

gcc/ChangeLog

+2013-12-17  Jakub Jelinek  <jakub@redhat.com>
+
+	PR tree-optimization/59523
+	* tree-vectorizer.c (fold_loop_vectorized_call): Call update_stmt
+	on updated stmts.
+
 2013-12-17  Aldy Hernandez  <aldyh@redhat.com>
 
 	* ipa-inline.c (gate_ipa_inline): Remove.

gcc/testsuite/ChangeLog

+2013-12-17  Jakub Jelinek  <jakub@redhat.com>
+
+	PR tree-optimization/59523
+	* gcc.dg/pr59523.c: New test.
+
 2013-12-17  Marek Polacek  <polacek@redhat.com>
 
 	* c-c++-common/ubsan/overflow-int128.c: New test.

gcc/testsuite/gcc.dg/pr59523.c

+/* PR tree-optimization/59523 */
+/* { dg-do compile } */
+/* { dg-options "-O3" } */
+/* { dg-additional-options "-mavx2" { target { i?86-*-* x86_64-*-* } } } */
+
+int *
+foo (int a, int *b, int *c, int *d)
+{
+  int i, *r = __builtin_alloca (a * sizeof (int));
+  __builtin_memcpy (r, d, a * sizeof (int));
+  for (i = 0; i < 64; i++)
+    c[i] += b[i];
+  for (i = 0; i < a; i++)
+    if (r[i] == 0)
+      r[i] = 1;
+  return r;
+}

gcc/tree-vectorizer.c

@@ -369,8 +369,11 @@ fold_loop_vectorized_call (gimple g, tree value)
 
   update_call_from_tree (&gsi, value);
   FOR_EACH_IMM_USE_STMT (use_stmt, iter, lhs)
-    FOR_EACH_IMM_USE_ON_STMT (use_p, iter)
-      SET_USE (use_p, value);
+    {
+      FOR_EACH_IMM_USE_ON_STMT (use_p, iter)
+	SET_USE (use_p, value);
+      update_stmt (use_stmt);
+    }
 }
 
 /* Function vectorize_loops.