diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 9137c5a3e9e..1e5fb4a08d2 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2012-03-11  H.J. Lu  <hongjiu.lu@intel.com>
+
+	* config/i386/i386.md (lwp_slwpcb): Check Pmode instead of
+	TARGET_64BIT.
+
 2012-03-11  H.J. Lu  <hongjiu.lu@intel.com>
 	    Uros Bizjak  <ubizjak@gmail.com>
 
diff --git a/gcc/config/i386/i386.md b/gcc/config/i386/i386.md
index 5dd1fc6ab2d..986ddad45b9 100644
--- a/gcc/config/i386/i386.md
+++ b/gcc/config/i386/i386.md
@@ -18031,7 +18031,7 @@
 {
   rtx (*insn)(rtx);
 
-  insn = (TARGET_64BIT
+  insn = (Pmode == DImode
 	  ? gen_lwp_slwpcbdi
 	  : gen_lwp_slwpcbsi);