compiler: add support for new language features of Go 1.17

compiler/compiler_test.go

@@ -9,6 +9,7 @@ import (
 	"testing"
 
 	"github.com/tinygo-org/tinygo/compileopts"
+	"github.com/tinygo-org/tinygo/goenv"
 	"github.com/tinygo-org/tinygo/loader"
 	"tinygo.org/x/go-llvm"
 )
@@ -16,6 +17,11 @@ import (
 // Pass -update to go test to update the output of the test files.
 var flagUpdate = flag.Bool("update", false, "update tests based on test output")
 
+type testCase struct {
+	file   string
+	target string
+}
+
 // Basic tests for the compiler. Build some Go files and compare the output with
 // the expected LLVM IR for regression testing.
 func TestCompiler(t *testing.T) {
@@ -34,10 +40,7 @@ func TestCompiler(t *testing.T) {
 		t.Skip("compiler tests require LLVM 11 or above, got LLVM ", llvm.Version)
 	}
 
-	tests := []struct {
-		file   string
-		target string
-	}{
+	tests := []testCase{
 		{"basic.go", ""},
 		{"pointer.go", ""},
 		{"slice.go", ""},
@@ -52,6 +55,14 @@ func TestCompiler(t *testing.T) {
 		{"intrinsics.go", "wasm"},
 	}
 
+	_, minor, err := goenv.GetGorootVersion(goenv.Get("GOROOT"))
+	if err != nil {
+		t.Fatal("could not read Go version:", err)
+	}
+	if minor >= 17 {
+		tests = append(tests, testCase{"go1.17.go", ""})
+	}
+
 	for _, tc := range tests {
 		name := tc.file
 		targetString := "wasm"