re PR middle-end/64391 (ICE: SIGSEGV in get_attrs_for (trans-mem.c:179) with…

re PR middle-end/64391 (ICE: SIGSEGV in get_attrs_for (trans-mem.c:179) with -fgnu-tm and #pragma GCC ivdep)

	PR middle-end/64391
	* trans-mem.c (get_attrs_for): Return NULL_TREE if X is NULL_TREE.

	* gcc.dg/tm/pr64391.c: New test.

From-SVN: r219555

gcc/ChangeLog

+2015-01-13  Marek Polacek  <polacek@redhat.com>
+
+	PR middle-end/64391
+	* trans-mem.c (get_attrs_for): Return NULL_TREE if X is NULL_TREE.
+
 2015-01-13  Jakub Jelinek  <jakub@redhat.com>
 
 	PR rtl-optimization/64286

gcc/testsuite/ChangeLog

+2015-01-13  Marek Polacek  <polacek@redhat.com>
+
+	PR middle-end/64391
+	* gcc.dg/tm/pr64391.c: New test.
+
 2015-01-13  H.J. Lu  <hongjiu.lu@intel.com>
 
 	* gcc.dg/tree-ssa/ssa-store-ccp-3.c: Exclude pie when nonpic is

gcc/testsuite/gcc.dg/tm/pr64391.c

+/* PR middle-end/64391 */
+/* { dg-do compile } */
+/* { dg-options "-fgnu-tm" } */
+
+void
+foo (void)
+{
+#pragma GCC ivdep
+  while (1);
+}

gcc/trans-mem.c

@@ -183,6 +183,9 @@ static void *expand_regions (struct tm_region *,
 static tree
 get_attrs_for (const_tree x)
 {
+  if (x == NULL_TREE)
+    return NULL_TREE;
+
   switch (TREE_CODE (x))
     {
     case FUNCTION_DECL:
@@ -191,16 +194,16 @@ get_attrs_for (const_tree x)
 
     default:
       if (TYPE_P (x))
-	return NULL;
+	return NULL_TREE;
       x = TREE_TYPE (x);
       if (TREE_CODE (x) != POINTER_TYPE)
-	return NULL;
+	return NULL_TREE;
       /* FALLTHRU */
 
     case POINTER_TYPE:
       x = TREE_TYPE (x);
       if (TREE_CODE (x) != FUNCTION_TYPE && TREE_CODE (x) != METHOD_TYPE)
-	return NULL;
+	return NULL_TREE;
       /* FALLTHRU */
 
     case FUNCTION_TYPE: