sync.md (*membar_storeload_leon3): New insn.

	* config/sparc/sync.md (*membar_storeload_leon3): New insn.
	(*membar_storeload): Disable for LEON3.

From-SVN: r212841

gcc/ChangeLog

+2014-07-19  Daniel Cederman  <cederman@gaisler.com>
+
+	* config/sparc/sync.md (*membar_storeload_leon3): New insn.
+	(*membar_storeload): Disable for LEON3.
+
 2014-07-18  Bernd Edlinger  <bernd.edlinger@hotmail.de>
 
 	PR rtl-optimization/61461

gcc/config/sparc/sync.md

@@ -64,11 +64,19 @@
   "stbar"
   [(set_attr "type" "multi")])
 
+;; For LEON3, STB has the effect of membar #StoreLoad.
+(define_insn "*membar_storeload_leon3"
+  [(set (match_operand:BLK 0 "" "")
+	(unspec:BLK [(match_dup 0) (const_int 2)] UNSPEC_MEMBAR))]
+  "TARGET_LEON3"
+  "stb\t%%g0, [%%sp-1]"
+  [(set_attr "type" "store")])
+
 ;; For V8, LDSTUB has the effect of membar #StoreLoad.
 (define_insn "*membar_storeload"
   [(set (match_operand:BLK 0 "" "")
 	(unspec:BLK [(match_dup 0) (const_int 2)] UNSPEC_MEMBAR))]
-  "TARGET_V8"
+  "TARGET_V8 && !TARGET_LEON3"
   "ldstub\t[%%sp-1], %%g0"
   [(set_attr "type" "multi")])