re PR tree-optimization/60785 (ICE in gsi_for_stmt w/ -O2 -ftree-loop-linear)

2014-04-08  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/60785
	* graphite-sese-to-poly.c (rewrite_phi_out_of_ssa): Treat
	default defs properly.

	* gcc.dg/graphite/pr60785.c: New testcase.

From-SVN: r209214

gcc/ChangeLog

+2014-04-08  Richard Biener  <rguenther@suse.de>
+
+	PR tree-optimization/60785
+	* graphite-sese-to-poly.c (rewrite_phi_out_of_ssa): Treat
+	default defs properly.
+
 2014-04-08  Nathan Sidwell  <nathan@codesourcery.com>
 
 	* doc/invoke (Wnon-virtual-dtor): Update to match implementation.

gcc/graphite-sese-to-poly.c

@@ -2250,6 +2250,7 @@ rewrite_phi_out_of_ssa (scop_p scop, gimple_stmt_iterator *psi)
       /* Avoid the insertion of code in the loop latch to please the
 	 pattern matching of the vectorizer.  */
       if (TREE_CODE (arg) == SSA_NAME
+	  && !SSA_NAME_IS_DEFAULT_DEF (arg)
 	  && e->src == bb->loop_father->latch)
 	insert_out_of_ssa_copy (scop, zero_dim_array, arg,
 				SSA_NAME_DEF_STMT (arg));

gcc/testsuite/ChangeLog

+2014-04-08  Richard Biener  <rguenther@suse.de>
+
+	PR tree-optimization/60785
+	* gcc.dg/graphite/pr60785.c: New testcase.
+
 2014-04-08  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
 
 	PR target/60602

gcc/testsuite/gcc.dg/graphite/pr60785.c

+/* { dg-options "-O2 -floop-interchange" } */
+
+static int
+aqc(void)
+{
+  return 1;
+}
+
+void
+gkd(void)
+{
+  int wu0;
+  static int b1y;
+  static int gw2;
+  static int *ydw = &gw2;
+  static int **m3l = &ydw;
+  **m3l = 0;
+  for (b1y = 0; b1y < 1; ++b1y)
+    {
+      int *cpj = &gw2;
+      if (*ydw |= aqc())
+	{
+	  *cpj = 0;
+	  *ydw = wu0;
+	}
+    }
+}