mv _testcgo => _testrt

cl/_testrt/allocstr/out.ll

@@ -5,10 +5,12 @@ source_filename = "main"
 %"github.com/goplus/llgo/internal/runtime.Slice" = type { ptr, i64, i64 }
 
 @"main.init$guard" = global ptr null
+@0 = private unnamed_addr constant [13 x i8] c"Hello world\0A\00", align 1
 
 define %"github.com/goplus/llgo/internal/runtime.String" @main.hello() {
 _llgo_0:
-  ret [13 x i8] c"Hello world\0A\00"
+  %0 = call %"github.com/goplus/llgo/internal/runtime.String" @"github.com/goplus/llgo/internal/runtime.NewString"(ptr @0, i64 12)
+  ret %"github.com/goplus/llgo/internal/runtime.String" %0
 }
 
 define void @main.init() {
@@ -36,6 +38,8 @@ _llgo_0:
   ret void
 }
 
+declare %"github.com/goplus/llgo/internal/runtime.String" @"github.com/goplus/llgo/internal/runtime.NewString"(ptr, i64)
+
 declare i64 @"github.com/goplus/llgo/internal/runtime.StringLen"(%"github.com/goplus/llgo/internal/runtime.Slice")
 
 declare ptr @"github.com/goplus/llgo/internal/runtime.CStrCopy"(ptr, %"github.com/goplus/llgo/internal/runtime.String")

cl/compile_test.go

@@ -28,8 +28,8 @@ func testCompile(t *testing.T, src, expected string) {
 	cltest.TestCompileEx(t, src, "foo.go", expected)
 }
 
-func TestFromTestcgo(t *testing.T) {
+func TestFromTestrt(t *testing.T) {
-	cltest.FromDir(t, "allocstr", "./_testcgo", true)
+	cltest.FromDir(t, "", "./_testrt", true)
 }
 
 func TestFromTestdata(t *testing.T) {

ssa/cl_test.go

@@ -22,8 +22,8 @@ import (
 	"github.com/goplus/llgo/cl/cltest"
 )
 
-func TestFromTestcgo(t *testing.T) {
+func TestFromTestrt(t *testing.T) {
-	cltest.FromDir(t, "", "../cl/_testcgo", true)
+	cltest.FromDir(t, "", "../cl/_testrt", true)
 }
 
 func TestFromTestdata(t *testing.T) {