From: Andrew Pinski <andrew_pinski@playstation.sony.com>
Date: Mon, 2 Jul 2007 19:40:30 +0000 (+0000)
Subject: rtlhooks.c (gen_lowpart_if_possible): Check for invalid subreg before calling gen_low... 
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=e4950e42af5b71476c43f30056a1e3aaac7aa36a;p=gcc.git

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

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.

From-SVN: r126230
---

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;