Initial commit: Go 1.23 release state

test/codegen/retpoline.go

@@ -0,0 +1,43 @@
+// asmcheck -gcflags=-spectre=ret
+
+//go:build amd64
+
+package codegen
+
+func CallFunc(f func()) {
+	// amd64:`CALL\truntime.retpoline`
+	f()
+}
+
+func CallInterface(x interface{ M() }) {
+	// amd64:`CALL\truntime.retpoline`
+	x.M()
+}
+
+// Check to make sure that jump tables are disabled
+// when retpoline is on. See issue 57097.
+func noJumpTables(x int) int {
+	switch x {
+	case 0:
+		return 0
+	case 1:
+		return 1
+	case 2:
+		return 2
+	case 3:
+		return 3
+	case 4:
+		return 4
+	case 5:
+		return 5
+	case 6:
+		return 6
+	case 7:
+		return 7
+	case 8:
+		return 8
+	case 9:
+		return 9
+	}
+	return 10
+}