diff --git a/src/cmd/compile/internal/gc/ssa.go b/src/cmd/compile/internal/gc/ssa.go
index c8fb013..104dd40 100644
--- a/src/cmd/compile/internal/gc/ssa.go
+++ b/src/cmd/compile/internal/gc/ssa.go
@@ -295,7 +295,10 @@
 // worker indicates which of the backend workers is doing the processing.
 func buildssa(fn *Node, worker int) *ssa.Func {
 	name := fn.funcname()
-	printssa := name == ssaDump
+	printssa := false
+	if ssaDump != "" { // match either a simple name e.g. "(*Reader).Reset", or a package.name e.g. "compress/gzip.(*Reader).Reset"
+		printssa = name == ssaDump || myimportpath+"."+name == ssaDump
+	}
 	var astBuf *bytes.Buffer
 	if printssa {
 		astBuf = &bytes.Buffer{}