sync.md (mfence_nosse): Use "lock orl $0, -4(%esp)".

	* config/i386/sync.md (mfence_nosse): Use "lock orl $0, -4(%esp)".

From-SVN: r236895

gcc/ChangeLog

+2016-05-30  Uros Bizjak  <ubizjak@gmail.com>
+
+	* config/i386/sync.md (mfence_nosse): Use "lock orl $0, -4(%esp)".
+
 2016-05-30  Andi Kleen  <ak@linux.intel.com>
 
 	* auto-profile.c (read_profile): Replace asserts with errors
@@ -5,7 +9,7 @@
 	* gcov-io.c (gcov_read_words): Dito.
 
 2016-05-30  Jan Hubicka  <hubicka@ucw.cz>
-	
+
 	* tree-cfg.c (print_loop): Print likely upper bounds.
 
 2016-05-30  Jan Hubicka  <hubicka@ucw.cz>

gcc/config/i386/sync.md

@@ -98,7 +98,7 @@
 	(unspec:BLK [(match_dup 0)] UNSPEC_MFENCE))
    (clobber (reg:CC FLAGS_REG))]
   "!(TARGET_64BIT || TARGET_SSE2)"
-  "lock{%;} or{l}\t{$0, (%%esp)|DWORD PTR [esp], 0}"
+  "lock{%;} or{l}\t{$0, -4(%%esp)|DWORD PTR [esp-4], 0}"
   [(set_attr "memory" "unknown")])
 
 (define_expand "mem_thread_fence"