re PR tree-optimization/52429 (ICE in separate_decls_in_region_debug, at…

re PR tree-optimization/52429 (ICE in separate_decls_in_region_debug, at tree-parloops.c:914 with -ftree-parallelize-loops)

	PR tree-optimization/52429
	* tree-parloops.c (separate_decls_in_region_debug): Return early
	if var is LABEL_DECL.

	* gcc.dg/torture/pr52429.c: New test.
	* g++.dg/opt/pr52429.C: New test.

From-SVN: r184665

gcc/ChangeLog

+2012-02-29  Jakub Jelinek  <jakub@redhat.com>
+
+	PR tree-optimization/52429
+	* tree-parloops.c (separate_decls_in_region_debug): Return early
+	if var is LABEL_DECL.
+
 2012-02-29  Bill Schmidt  <wschmidt@linux.vnet.ibm.com>
 
 	PR tree-optimization/52424

gcc/testsuite/ChangeLog

+2012-02-29  Jakub Jelinek  <jakub@redhat.com>
+
+	PR tree-optimization/52429
+	* gcc.dg/torture/pr52429.c: New test.
+	* g++.dg/opt/pr52429.C: New test.
+
 2012-02-29  Richard Guenther  <rguenther@suse.de>
 
 	PR testsuite/52297

gcc/testsuite/g++.dg/opt/pr52429.C

+// PR tree-optimization/52429
+// { dg-do compile }
+// { dg-require-effective-target pthread }
+// { dg-options "-O -g -ftree-parallelize-loops=4" }
+
+struct B
+{
+  B () : b (__null) {}
+  int *b;
+};
+
+void *
+operator new (__SIZE_TYPE__, void *p)
+{
+  return p;
+}
+
+void
+foo (B *x, unsigned y)
+{
+  while (y--)
+    new (x) B;
+}

gcc/testsuite/gcc.dg/torture/pr52429.c

+/* PR tree-optimization/52429 */
+/* { dg-do compile } */
+/* { dg-require-effective-target pthread } */
+/* { dg-options "-g -ftree-parallelize-loops=4" } */
+
+double d[65536], e[65536];
+
+void
+foo (void)
+{
+  int i;
+  double f, g;
+  for (i = 0; i < 65536; i++)
+    {
+      f = e[i];
+      goto lab1;
+    lab2:
+      d[i] = f * g;
+      continue;
+    lab1:
+      g = d[i];
+      goto lab2;
+    }
+}

gcc/tree-parloops.c

@@ -909,7 +909,7 @@ separate_decls_in_region_debug (gimple stmt, htab_t name_copies,
     var = gimple_debug_source_bind_get_var (stmt);
   else
     return true;
-  if (TREE_CODE (var) == DEBUG_EXPR_DECL)
+  if (TREE_CODE (var) == DEBUG_EXPR_DECL || TREE_CODE (var) == LABEL_DECL)
     return true;
   gcc_assert (DECL_P (var) && SSA_VAR_P (var));
   ielt.uid = DECL_UID (var);