From b24ea0776687310b2f3d767146eb6568f788a198 Mon Sep 17 00:00:00 2001
From: John Wehle <john@feith.com>
Date: Thu, 14 Sep 2000 04:47:48 +0000
Subject: alias.c (memrefs_conflict_p): An ADDRESSOF doesn't conflict with
 frame_pointer_rtx.

	* alias.c (memrefs_conflict_p): An ADDRESSOF doesn't
	conflict with frame_pointer_rtx.

From-SVN: r36401
---
 gcc/alias.c | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

(limited to 'gcc/alias.c')

diff --git a/gcc/alias.c b/gcc/alias.c
index 32d63b2..be46281 100644
--- a/gcc/alias.c
+++ b/gcc/alias.c
@@ -1457,8 +1457,17 @@ memrefs_conflict_p (xsize, x, ysize, y, c)
       return memrefs_conflict_p (xsize, x, ysize, XEXP (y, 0), c);
     }
 
-  if (GET_CODE (x) == ADDRESSOF && GET_CODE (y) == ADDRESSOF)
-    return xsize < 0 || ysize < 0;
+  if (GET_CODE (x) == ADDRESSOF)
+    {
+      if (y == frame_pointer_rtx
+	  || GET_CODE (y) == ADDRESSOF)
+	return xsize <= 0 || ysize <= 0;
+    }
+  if (GET_CODE (y) == ADDRESSOF)
+    {
+      if (x == frame_pointer_rtx)
+	return xsize <= 0 || ysize <= 0;
+    }
 
   if (CONSTANT_P (x))
     {
-- 
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