From: Roger Sayle <roger@eyesopen.com>
Date: Fri, 18 Apr 2003 13:30:26 +0000 (+0000)
Subject: rtlanal.c (reg_overlap_mentioned_p): Handle ZERO_EXTRACT and SIGN_EXTRACT.
X-Git-Tag: releases/gcc-3.4.0~7191
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=c553b7026a36d035a298064ea62e9035ba2b3edd;p=thirdparty%2Fgcc.git

rtlanal.c (reg_overlap_mentioned_p): Handle ZERO_EXTRACT and SIGN_EXTRACT.


	* rtlanal.c (reg_overlap_mentioned_p): Handle ZERO_EXTRACT
	and SIGN_EXTRACT.

From-SVN: r65782
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 68c3d86de6c3..78b0a8ac0456 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2003-04-18  Roger Sayle  <roger@eyesopen.com>
+
+	* rtlanal.c (reg_overlap_mentioned_p): Handle ZERO_EXTRACT
+	and SIGN_EXTRACT.
+
 2003-04-18  Eric Botcazou  <ebotcazou@libertysurf.fr>
 
 	PR optimization/7675
diff --git a/gcc/rtlanal.c b/gcc/rtlanal.c
index 3b024adc89d0..80fff6310bf3 100644
--- a/gcc/rtlanal.c
+++ b/gcc/rtlanal.c
@@ -1573,7 +1573,9 @@ reg_overlap_mentioned_p (x, in)
   unsigned int regno, endregno;
 
   /* Overly conservative.  */
-  if (GET_CODE (x) == STRICT_LOW_PART)
+  if (GET_CODE (x) == STRICT_LOW_PART
+      || GET_CODE (x) == ZERO_EXTRACT
+      || GET_CODE (x) == SIGN_EXTRACT)
     x = XEXP (x, 0);
 
   /* If either argument is a constant, then modifying X can not affect IN.  */