From: Richard Sandiford <rdsandiford@googlemail.com>
Date: Mon, 18 Aug 2008 18:21:01 +0000 (+0000)
Subject: rtlanal.c (subreg_offset_representable_p): Check HARD_REGNO_MODE_OK.
X-Git-Tag: releases/gcc-4.4.0~3088
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=808cc41726a4f1b3ab1b87521e086baf3de66432;p=thirdparty%2Fgcc.git

rtlanal.c (subreg_offset_representable_p): Check HARD_REGNO_MODE_OK.

gcc/
	* rtlanal.c (subreg_offset_representable_p): Check HARD_REGNO_MODE_OK.

From-SVN: r139207
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 36e15f2e2178..c3ddeabbedc2 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,7 @@
+2008-08-18  Richard Sandiford  <rdsandiford@googlemail.com>
+
+	* rtlanal.c (subreg_offset_representable_p): Check HARD_REGNO_MODE_OK.
+
 2008-08-18  Tomas Bily  <tbily@suse.cz>
 
 	* tree.h (IS_CONVERT_EXPR_CODE_P): Renamed to CONVERT_EXPR_CODE_P.
diff --git a/gcc/rtlanal.c b/gcc/rtlanal.c
index fb4a5df7dc85..6337156eacbf 100644
--- a/gcc/rtlanal.c
+++ b/gcc/rtlanal.c
@@ -3241,7 +3241,8 @@ subreg_offset_representable_p (unsigned int xregno, enum machine_mode xmode,
 {
   struct subreg_info info;
   subreg_get_info (xregno, xmode, offset, ymode, &info);
-  return info.representable_p;
+  return (info.representable_p
+	  && HARD_REGNO_MODE_OK (xregno + info.offset, ymode));
 }
 
 /* Return the final regno that a subreg expression refers to.  */