From: Jeff Law <law@gcc.gnu.org>
Date: Sun, 4 Aug 1996 05:26:17 +0000 (-0600)
Subject: combine.c (rtx_equal_for_field_assignment_p): Check for get_last_value returning... 
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=0f47edd345be048d7b7a787dda85306b26c0d510;p=gcc.git

combine.c (rtx_equal_for_field_assignment_p): Check for get_last_value returning (CLOBBER (CONST_INT 0)).

        * combine.c (rtx_equal_for_field_assignment_p): Check for
        get_last_value returning (CLOBBER (CONST_INT 0)).

From-SVN: r12590
---

diff --git a/gcc/combine.c b/gcc/combine.c
index 03b86449355..796a7c24cdd 100644
--- a/gcc/combine.c
+++ b/gcc/combine.c
@@ -6569,9 +6569,15 @@ rtx_equal_for_field_assignment_p (x, y)
   last_x = get_last_value (x);
   last_y = get_last_value (y);
 
-  return ((last_x != 0 && rtx_equal_for_field_assignment_p (last_x, y))
-	  || (last_y != 0 && rtx_equal_for_field_assignment_p (x, last_y))
+  return ((last_x != 0
+	   && GET_CODE (last_x) != CLOBBER
+	   && rtx_equal_for_field_assignment_p (last_x, y))
+	  || (last_y != 0
+	      && GET_CODE (last_y) != CLOBBER
+	      && rtx_equal_for_field_assignment_p (x, last_y))
 	  || (last_x != 0 && last_y != 0
+	      && GET_CODE (last_x) != CLOBBER
+	      && GET_CODE (last_y) != CLOBBER
 	      && rtx_equal_for_field_assignment_p (last_x, last_y)));
 }