From: Stephane Carrez <stcarrez@nerim.fr>
Date: Tue, 2 Mar 2004 20:44:38 +0000 (+0100)
Subject: m68hc11.c (m68hc11_check_z_replacement): Fix when comparing with Z register.
X-Git-Tag: releases/gcc-4.0.0~9683
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=77d2a36d1db2b70ad5e9f6824b341b09109628f7;p=thirdparty%2Fgcc.git

m68hc11.c (m68hc11_check_z_replacement): Fix when comparing with Z register.

	* config/m68hc11/m68hc11.c (m68hc11_check_z_replacement): Fix when
	comparing with Z register.

From-SVN: r78779
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 31cafc8e44b6..af21040fa878 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2004-03-02  Stephane Carrez  <stcarrez@nerim.fr>
+
+	* config/m68hc11/m68hc11.c (m68hc11_check_z_replacement): Fix when
+	comparing with Z register.
+
 2004-03-02  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>
 
 	* cfgloop.h (struct loop_desc): Removed.
diff --git a/gcc/config/m68hc11/m68hc11.c b/gcc/config/m68hc11/m68hc11.c
index e5bca2ed56ba..a0e83c39bf2c 100644
--- a/gcc/config/m68hc11/m68hc11.c
+++ b/gcc/config/m68hc11/m68hc11.c
@@ -4169,8 +4169,10 @@ m68hc11_check_z_replacement (rtx insn, struct replace_info *info)
 	{
 	  if ((GET_CODE (src) == REG && REGNO (src) == HARD_Z_REGNUM)
 	      || (GET_CODE (src) == COMPARE &&
-		  (rtx_equal_p (XEXP (src, 0), z_reg)
-		   || rtx_equal_p (XEXP (src, 1), z_reg))))
+		  ((rtx_equal_p (XEXP (src, 0), z_reg)
+                    && H_REG_P (XEXP (src, 1)))
+		   || (rtx_equal_p (XEXP (src, 1), z_reg)
+                       && H_REG_P (XEXP (src, 0))))))
 	    {
 	      if (insn == info->first)
 		{