diff --git a/compiler/sparcgen/opcode.inc b/compiler/sparcgen/opcode.inc
index 9b6642dc58..ed53151263 100644
--- a/compiler/sparcgen/opcode.inc
+++ b/compiler/sparcgen/opcode.inc
@@ -74,4 +74,8 @@ A_FNEGd,
 A_FNEGq,
 { Memory barrier instructions }
 A_STBAR,
-A_MEMBAR
+A_MEMBAR,
+
+{ SPARC v9 }
+A_FLUSHW
+
diff --git a/compiler/sparcgen/strinst.inc b/compiler/sparcgen/strinst.inc
index 517632fa3c..4c066ca3e3 100644
--- a/compiler/sparcgen/strinst.inc
+++ b/compiler/sparcgen/strinst.inc
@@ -70,4 +70,7 @@
           'fnegd','fnegq',
           { memory barrier instructions }
           'stbar',
-          'membar'
+          'membar',
+
+          { SPARC v9 }
+          'flushw'