Put back unspec_volatile on split_stack_return.

2010-10-26  H.J. Lu  <hongjiu.lu@intel.com>

	* config/i386/i386.md (split_stack_return): Put back
	unspec_volatile.

From-SVN: r165995

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 7c6b89a..3686a29 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2010-10-26  H.J. Lu  <hongjiu.lu@intel.com>
+
+       * config/i386/i386.md (split_stack_return): Put back
+       unspec_volatile.
+
 2010-10-26  Jan Hubicka  <jh@suse.cz>
 
        * ipa.c (process_references): Enqueue all referenced nodes;

diff --git a/gcc/config/i386/i386.md b/gcc/config/i386/i386.md
index cfd3f65..475e530 100644 (file)
--- a/gcc/config/i386/i386.md
+++ b/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 [(match_operand:SI 0 "const_int_operand" "")]
-           UNSPEC_STACK_CHECK)]
+  [(unspec_volatile [(match_operand:SI 0 "const_int_operand" "")]
+                   UNSPEC_STACK_CHECK)]
   ""
 {
   if (operands[0] == const0_rtx)