compiler: test generated composite map hashes

compiler/testdata/zeromap.go

@@ -12,6 +12,11 @@ type nestedPadding struct {
 	i int
 }
 
+type stringStruct struct {
+	a string
+	b string
+}
+
 //go:noinline
 func testZeroGet(m map[hasPadding]int, s hasPadding) int {
 	return m[s]
@@ -32,6 +37,21 @@ func testZeroArraySet(m map[[2]hasPadding]int, s [2]hasPadding) {
 	m[s] = 5
 }
 
+//go:noinline
+func makeStringStructMap() map[stringStruct]int {
+	return make(map[stringStruct]int)
+}
+
+//go:noinline
+func makeShortStringArrayMap() map[[2]string]int {
+	return make(map[[2]string]int)
+}
+
+//go:noinline
+func makeLongStringArrayMap() map[[5]string]int {
+	return make(map[[5]string]int)
+}
+
 func main() {
 
 }