diff --git a/src/cmd/compile/internal/ssa/_gen/go.mod b/src/cmd/compile/internal/ssa/_gen/go.mod
new file mode 100644
index 00000000000..6f750a5618a
--- /dev/null
+++ b/src/cmd/compile/internal/ssa/_gen/go.mod
@@ -0,0 +1,5 @@
+module _gen
+
+go 1.24
+
+require golang.org/x/tools v0.27.0
diff --git a/src/cmd/compile/internal/ssa/_gen/go.sum b/src/cmd/compile/internal/ssa/_gen/go.sum
new file mode 100644
index 00000000000..6c355a67c3a
--- /dev/null
+++ b/src/cmd/compile/internal/ssa/_gen/go.sum
@@ -0,0 +1,2 @@
+golang.org/x/tools v0.27.0 h1:qEKojBykQkQ4EynWy4S8Weg69NumxKdn40Fce3uc/8o=
+golang.org/x/tools v0.27.0/go.mod h1:sUi0ZgbwW9ZPAq26Ekut+weQPR5eIM6GQLQ1Yjm1H0Q=
diff --git a/src/cmd/compile/internal/types2/stdlib_test.go b/src/cmd/compile/internal/types2/stdlib_test.go
index 0c63e5d77c8..6966bb94b00 100644
--- a/src/cmd/compile/internal/types2/stdlib_test.go
+++ b/src/cmd/compile/internal/types2/stdlib_test.go
@@ -354,7 +354,8 @@ func TestStdKen(t *testing.T) {
 
 // Package paths of excluded packages.
 var excluded = map[string]bool{
-	"builtin": true,
+	"builtin":                       true,
+	"cmd/compile/internal/ssa/_gen": true,
 }
 
 // printPackageMu synchronizes the printing of type-checked package files in
diff --git a/src/go/types/stdlib_test.go b/src/go/types/stdlib_test.go
index 3b9b2852c46..ec76f8ee172 100644
--- a/src/go/types/stdlib_test.go
+++ b/src/go/types/stdlib_test.go
@@ -356,7 +356,8 @@ func TestStdKen(t *testing.T) {
 
 // Package paths of excluded packages.
 var excluded = map[string]bool{
-	"builtin": true,
+	"builtin":                       true,
+	"cmd/compile/internal/ssa/_gen": true,
 }
 
 // printPackageMu synchronizes the printing of type-checked package files in