diff --git a/src/cmd/compile/internal/gc/go.go b/src/cmd/compile/internal/gc/go.go
index cbb79c0..600b00d 100644
--- a/src/cmd/compile/internal/gc/go.go
+++ b/src/cmd/compile/internal/gc/go.go
@@ -91,14 +91,13 @@
 	Pxxx      Class = iota
 	PEXTERN         // global variable
 	PAUTO           // local variables
+	PAUTOHEAP       // local variable or parameter moved to heap
 	PPARAM          // input arguments
 	PPARAMOUT       // output results
 	PPARAMREF       // closure variable reference
 	PFUNC           // global function
 
 	PDISCARD // discard during parse of duplicate import
-
-	PHEAP = 1 << 7 // an extra bit to identify an escaped variable
 )
 
 // note this is the runtime representation