re PR middle-end/37931 (ice: verify_gimple failed)

	PR middle-end/37931
	* fold-const.c (distribute_bit_expr): Convert common, left and
	right arguments to type.

	* gcc.c-torture/execute/pr37931.c: New test.

From-SVN: r141406

gcc/ChangeLog

+2008-10-28  Jakub Jelinek  <jakub@redhat.com>
+
+	PR middle-end/37931
+	* fold-const.c (distribute_bit_expr): Convert common, left and
+	right arguments to type.
+
 2008-10-28  Nick Clifton  <nickc@redhat.com>
 
 	* config/mn10300/mn10300.h (CALL_REALLY_USED_REGISTERS): Define.

gcc/fold-const.c

@@ -3806,6 +3806,9 @@ distribute_bit_expr (enum tree_code code, tree type, tree arg0, tree arg1)
   else
     return 0;
 
+  common = fold_convert (type, common);
+  left = fold_convert (type, left);
+  right = fold_convert (type, right);
   return fold_build2 (TREE_CODE (arg0), type, common,
 		      fold_build2 (code, type, left, right));
 }

gcc/testsuite/ChangeLog

+2008-10-28  Jakub Jelinek  <jakub@redhat.com>
+
+	PR middle-end/37931
+	* gcc.c-torture/execute/pr37931.c: New test.
+
 2008-10-27  Jakub Jelinek  <jakub@redhat.com>
 
 	PR tree-optimization/37879

gcc/testsuite/gcc.c-torture/execute/pr37931.c

+/* PR middle-end/37931 */
+
+extern void abort (void);
+
+int
+foo (int a, unsigned int b)
+{
+  return (a | 1) & (b | 1);
+}
+
+int
+main (void)
+{
+  if (foo (6, 0xc6) != 7)
+    abort ();
+  if (foo (0x80, 0xc1) != 0x81)
+    abort ();
+  if (foo (4, 4) != 5)
+    abort ();
+  if (foo (5, 4) != 5)
+    abort ();
+  return 0;
+}