@@ -5681,12 +5681,17 @@ combine_simplify_rtx (rtx x, enum machin
{
/* Try to simplify the expression further. */
rtx tor = simplify_gen_binary (IOR, mode, XEXP (x, 0), XEXP (x, 1));
- temp = combine_simplify_rtx (tor, mode, in_dest, 0);
+ temp = combine_simplify_rtx (tor, VOIDmode, in_dest, 0);
/* If we could, great. If not, do not go ahead with the IOR
replacement, since PLUS appears in many special purpose
address arithmetic instructions. */
- if (GET_CODE (temp) != CLOBBER && temp != tor)
+ if (GET_CODE (temp) != CLOBBER
+ && (GET_CODE (temp) != IOR
+ || ((XEXP (temp, 0) != XEXP (x, 0)
+ || XEXP (temp, 1) != XEXP (x, 1))
+ && (XEXP (temp, 0) != XEXP (x, 1)
+ || XEXP (temp, 1) != XEXP (x, 0)))))
return temp;
}
break;
@@ -0,0 +1,13 @@
+/* PR rtl-optimization/49619 */
+/* { dg-do compile } */
+/* { dg-options "-O -fno-tree-fre" } */
+
+extern int a, b;
+
+void
+foo (int x)
+{
+ a = 2;
+ b = 0;
+ b = (a && ((a = 1, 0 >= b) || (short) (x + (b & x))));
+}