[Bug bootstrap/62301] [5 Regression] PowerPC bootstrap broken since r214654

[wschmidt at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62301

--- Comment #3 from Bill Schmidt <wschmidt at gcc dot gnu.org> ---
Looks like a subtle logic change in the patch:

+  FOR_EACH_SUBRTX (iter, array, body, ALL)
+    if (const_rtx y = *iter)
+      {
+       /* Check if a label_ref Y refers to label X.  */
+       if (GET_CODE (y) == LABEL_REF && LABEL_P (y) && XEXP (y, 0) == x)
+         return true;

-  if (*body == NULL_RTX)
-    return y == NULL_RTX;
+       if (rtx_equal_p (x, y))
+         return true;

-  /* Return true if a label_ref *BODY refers to label Y.  */
-  if (GET_CODE (*body) == LABEL_REF && LABEL_P (y))
-    return XEXP (*body, 0) == y;

If XEXP (y, 0) != x, it seems we should return false to match what was done
before.  Testing a patch to fix this.