Replace unspec_volatile with unspec in split_stack_return.

From-SVN: r165987

gcc/ChangeLog

+2010-10-26  H.J. Lu  <hongjiu.lu@intel.com>
+
+	* config/i386/i386.md (split_stack_return): Replace
+	unspec_volatile with unspec.
+
 2010-10-26  Jonathan Wakely  <jwakely.gcc@gmail.com>
 
 	* doc/install.texi: Fix typo in --with-sysroot description.

gcc/config/i386/i386.md

@@ -11751,8 +11751,8 @@
 ;; In order to support the call/return predictor, we use a return
 ;; instruction which the middle-end doesn't see.
 (define_insn "split_stack_return"
-  [(unspec_volatile [(match_operand:SI 0 "const_int_operand" "")]
-		    UNSPEC_STACK_CHECK)]
+  [(unspec [(match_operand:SI 0 "const_int_operand" "")]
+	    UNSPEC_STACK_CHECK)]
   ""
 {
   if (operands[0] == const0_rtx)