re PR middle-end/58385 (likely wrong code bug)

	PR tree-optimization/58385
	* fold-const.c (build_range_check): If both low and high are NULL,
	use omit_one_operand_loc to preserve exp side-effects.

	* gcc.c-torture/execute/pr58385.c: New test.

From-SVN: r202494

gcc/ChangeLog

+2013-09-11  Jakub Jelinek  <jakub@redhat.com>
+
+	PR tree-optimization/58385
+	* fold-const.c (build_range_check): If both low and high are NULL,
+	use omit_one_operand_loc to preserve exp side-effects.
+
 2013-09-11  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>
 
 	* config/arm/arm.md (arm_shiftsi3): New alternative l/l/M.

gcc/fold-const.c

@@ -4299,7 +4299,7 @@ build_range_check (location_t loc, tree type, tree exp, int in_p,
     }
 
   if (low == 0 && high == 0)
-    return build_int_cst (type, 1);
+    return omit_one_operand_loc (loc, type, build_int_cst (type, 1), exp);
 
   if (low == 0)
     return fold_build2_loc (loc, LE_EXPR, type, exp,

gcc/testsuite/ChangeLog

+2013-09-11  Jakub Jelinek  <jakub@redhat.com>
+
+	PR tree-optimization/58385
+	* gcc.c-torture/execute/pr58385.c: New test.
+
 2013-09-11  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>
 
 	* gcc.target/arm/thumb-ifcvt-2.c: New test.

gcc/testsuite/gcc.c-torture/execute/pr58385.c

+/* PR tree-optimization/58385 */
+
+extern void abort (void);
+
+int a, b = 1;
+
+int
+foo ()
+{
+  b = 0;
+  return 0;
+}
+
+int
+main ()
+{
+  ((0 || a) & foo () >= 0) <= 1 && 1;
+  if (b)
+    abort ();
+  return 0;
+}