From: pinskia <pinskia@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Mon, 2 Jul 2007 19:40:30 +0000 (+0000)
Subject: 2007-07-02  Andrew Pinski  <andrew_pinski@playstation.sony.com>
X-Git-Url: http://git.sourceforge.jp/view?p=pf3gnuchains%2Fgcc-fork.git;a=commitdiff_plain;h=ed7dbf5d2b48adf8b83aebbb478e63586afff833

2007-07-02  Andrew Pinski  <andrew_pinski@playstation.sony.com>

        * rtlhooks.c (gen_lowpart_if_possible): Check for
        invalid subreg before calling gen_lowpart_SUBREG.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@126230 138bc75d-0d04-0410-961f-82ee72b054a4
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index d0fc5beb151..2ef7b32dc69 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2007-07-02  Andrew Pinski  <andrew_pinski@playstation.sony.com>
+
+	* rtlhooks.c (gen_lowpart_if_possible): Check for
+	invalid subreg before calling gen_lowpart_SUBREG.
+
 2007-07-02  Geoffrey Keating  <geoffk@apple.com>
 
 	* config/darwin9.h: Add copyright notice.
diff --git a/gcc/rtlhooks.c b/gcc/rtlhooks.c
index ece7198f9a2..79fcb445309 100644
--- a/gcc/rtlhooks.c
+++ b/gcc/rtlhooks.c
@@ -161,7 +161,9 @@ gen_lowpart_if_possible (enum machine_mode mode, rtx x)
 
       return new;
     }
-  else if (mode != GET_MODE (x) && GET_MODE (x) != VOIDmode)
+  else if (mode != GET_MODE (x) && GET_MODE (x) != VOIDmode
+	   && validate_subreg (mode, GET_MODE (x), x,
+			        subreg_lowpart_offset (mode, GET_MODE (x))))
     return gen_lowpart_SUBREG (mode, x);
   else
     return 0;