re PR other/61962 (GCC seems to enter an infinite loop when compiling the above cilk+ code.)

PR other/61962

gcc/c-family/
        * array-notation-common.c (find_rank): Added handling for other
        types of references.

testsuite/
        * c-c++-common/cilk-plus/AN/pr61962.c: New test.

From-SVN: r213858

gcc/c-family/ChangeLog

+2014-08-12  Igor Zamyatin  <igor.zamyatin@intel.com>
+
+	PR other/61962
+	* array-notation-common.c (find_rank): Added handling for other
+	types of references.
+
 2014-08-10  Marek Polacek  <polacek@redhat.com>
 
 	PR c/51849

gcc/c-family/array-notation-common.c

@@ -221,11 +221,14 @@ find_rank (location_t loc, tree orig_expr, tree expr, bool ignore_builtin_fn,
 	      current_rank++;
 	      ii_tree = ARRAY_NOTATION_ARRAY (ii_tree);
 	    }
-	  else if (TREE_CODE (ii_tree) == ARRAY_REF)
+	  else if (handled_component_p (ii_tree)
+		   || TREE_CODE (ii_tree) == INDIRECT_REF)
 	    ii_tree = TREE_OPERAND (ii_tree, 0);
 	  else if (TREE_CODE (ii_tree) == PARM_DECL
 		   || TREE_CODE (ii_tree) == VAR_DECL)
 	    break;
+	  else
+	    gcc_unreachable ();
 	}
       if (*rank == 0)
 	/* In this case, all the expressions this function has encountered thus

gcc/testsuite/ChangeLog

+2014-08-12  Igor Zamyatin  <igor.zamyatin@intel.com>
+
+	PR other/61962
+	* c-c++-common/cilk-plus/AN/pr61962.c: New test.
+
 2014-08-12  Thomas Preud'homme  <thomas.preudhomme@arm.com>
 
 	PR middle-end/62103

gcc/testsuite/c-c++-common/cilk-plus/AN/pr61962.c

+/* PR other/61962 */
+/* { dg-do compile } */
+/* { dg-options "-fcilkplus" } */
+
+struct FloatStruct
+{
+    float *f;
+};
+
+/* Either SRC or DST must be a struct, otherwise the bug does not occur.  */
+void f (struct FloatStruct* dst, float *src, unsigned int length)
+{
+    dst->f[0:length] = src[0:length];
+}