diff --git a/cl/_testgo/abiname/in.go b/cl/_testgo/abiname/in.go
deleted file mode 100644
index eea265b5..00000000
--- a/cl/_testgo/abiname/in.go
+++ /dev/null
@@ -1,16 +0,0 @@
-package main
-
-import "github.com/goplus/llgo/internal/abi"
-
-// NewPkgName creates a package name.
-func NewPkgName(pkgPath string) (ret abi.Name) {
-	if len(pkgPath) > 0 {
-		ret = abi.NewName(pkgPath, "", false, false)
-	}
-	return
-}
-
-func main() {
-	n := NewPkgName("pkgPath")
-	println(n.Name(), n.Tag(), n.IsExported(), n.IsEmbedded(), n.IsBlank())
-}
diff --git a/cl/_testgo/abiname/out.ll b/cl/_testgo/abiname/out.ll
deleted file mode 100644
index 4330a755..00000000
--- a/cl/_testgo/abiname/out.ll
+++ /dev/null
@@ -1,104 +0,0 @@
-; ModuleID = 'main'
-source_filename = "main"
-
-%"github.com/goplus/llgo/internal/abi.Name" = type { ptr }
-%"github.com/goplus/llgo/internal/runtime.String" = type { ptr, i64 }
-
-@"main.init$guard" = global ptr null
-@0 = private unnamed_addr constant [1 x i8] zeroinitializer, align 1
-@__llgo_argc = global ptr null
-@__llgo_argv = global ptr null
-@1 = private unnamed_addr constant [8 x i8] c"pkgPath\00", align 1
-
-define %"github.com/goplus/llgo/internal/abi.Name" @main.NewPkgName(%"github.com/goplus/llgo/internal/runtime.String" %0) {
-_llgo_0:
-  %1 = extractvalue %"github.com/goplus/llgo/internal/runtime.String" %0, 1
-  %2 = icmp sgt i64 %1, 0
-  br i1 %2, label %_llgo_1, label %_llgo_2
-
-_llgo_1:                                          ; preds = %_llgo_0
-  %3 = alloca %"github.com/goplus/llgo/internal/runtime.String", align 8
-  %4 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %3, i32 0, i32 0
-  store ptr @0, ptr %4, align 8
-  %5 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %3, i32 0, i32 1
-  store i64 0, ptr %5, align 4
-  %6 = load %"github.com/goplus/llgo/internal/runtime.String", ptr %3, align 8
-  %7 = call %"github.com/goplus/llgo/internal/abi.Name" @"github.com/goplus/llgo/internal/abi.NewName"(%"github.com/goplus/llgo/internal/runtime.String" %0, %"github.com/goplus/llgo/internal/runtime.String" %6, i1 false, i1 false)
-  %8 = extractvalue %"github.com/goplus/llgo/internal/abi.Name" %7, 0
-  br label %_llgo_2
-
-_llgo_2:                                          ; preds = %_llgo_1, %_llgo_0
-  %9 = phi ptr [ null, %_llgo_0 ], [ %8, %_llgo_1 ]
-  %10 = alloca %"github.com/goplus/llgo/internal/abi.Name", align 8
-  %11 = getelementptr inbounds %"github.com/goplus/llgo/internal/abi.Name", ptr %10, i32 0, i32 0
-  store ptr %9, ptr %11, align 8
-  %12 = load %"github.com/goplus/llgo/internal/abi.Name", ptr %10, align 8
-  ret %"github.com/goplus/llgo/internal/abi.Name" %12
-}
-
-define void @main.init() {
-_llgo_0:
-  %0 = load i1, ptr @"main.init$guard", align 1
-  br i1 %0, label %_llgo_2, label %_llgo_1
-
-_llgo_1:                                          ; preds = %_llgo_0
-  store i1 true, ptr @"main.init$guard", align 1
-  call void @"github.com/goplus/llgo/internal/abi.init"()
-  br label %_llgo_2
-
-_llgo_2:                                          ; preds = %_llgo_1, %_llgo_0
-  ret void
-}
-
-define i32 @main(i32 %0, ptr %1) {
-_llgo_0:
-  store i32 %0, ptr @__llgo_argc, align 4
-  store ptr %1, ptr @__llgo_argv, align 8
-  call void @"github.com/goplus/llgo/internal/runtime.init"()
-  call void @main.init()
-  %2 = alloca %"github.com/goplus/llgo/internal/runtime.String", align 8
-  %3 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %2, i32 0, i32 0
-  store ptr @1, ptr %3, align 8
-  %4 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %2, i32 0, i32 1
-  store i64 7, ptr %4, align 4
-  %5 = load %"github.com/goplus/llgo/internal/runtime.String", ptr %2, align 8
-  %6 = call %"github.com/goplus/llgo/internal/abi.Name" @main.NewPkgName(%"github.com/goplus/llgo/internal/runtime.String" %5)
-  %7 = call %"github.com/goplus/llgo/internal/runtime.String" @"(github.com/goplus/llgo/internal/abi.Name).Name"(%"github.com/goplus/llgo/internal/abi.Name" %6)
-  %8 = call %"github.com/goplus/llgo/internal/runtime.String" @"(github.com/goplus/llgo/internal/abi.Name).Tag"(%"github.com/goplus/llgo/internal/abi.Name" %6)
-  %9 = call i1 @"(github.com/goplus/llgo/internal/abi.Name).IsExported"(%"github.com/goplus/llgo/internal/abi.Name" %6)
-  %10 = call i1 @"(github.com/goplus/llgo/internal/abi.Name).IsEmbedded"(%"github.com/goplus/llgo/internal/abi.Name" %6)
-  %11 = call i1 @"(github.com/goplus/llgo/internal/abi.Name).IsBlank"(%"github.com/goplus/llgo/internal/abi.Name" %6)
-  call void @"github.com/goplus/llgo/internal/runtime.PrintString"(%"github.com/goplus/llgo/internal/runtime.String" %7)
-  call void @"github.com/goplus/llgo/internal/runtime.PrintByte"(i8 32)
-  call void @"github.com/goplus/llgo/internal/runtime.PrintString"(%"github.com/goplus/llgo/internal/runtime.String" %8)
-  call void @"github.com/goplus/llgo/internal/runtime.PrintByte"(i8 32)
-  call void @"github.com/goplus/llgo/internal/runtime.PrintBool"(i1 %9)
-  call void @"github.com/goplus/llgo/internal/runtime.PrintByte"(i8 32)
-  call void @"github.com/goplus/llgo/internal/runtime.PrintBool"(i1 %10)
-  call void @"github.com/goplus/llgo/internal/runtime.PrintByte"(i8 32)
-  call void @"github.com/goplus/llgo/internal/runtime.PrintBool"(i1 %11)
-  call void @"github.com/goplus/llgo/internal/runtime.PrintByte"(i8 10)
-  ret i32 0
-}
-
-declare %"github.com/goplus/llgo/internal/abi.Name" @"github.com/goplus/llgo/internal/abi.NewName"(%"github.com/goplus/llgo/internal/runtime.String", %"github.com/goplus/llgo/internal/runtime.String", i1, i1)
-
-declare void @"github.com/goplus/llgo/internal/abi.init"()
-
-declare void @"github.com/goplus/llgo/internal/runtime.init"()
-
-declare %"github.com/goplus/llgo/internal/runtime.String" @"(github.com/goplus/llgo/internal/abi.Name).Name"(%"github.com/goplus/llgo/internal/abi.Name")
-
-declare %"github.com/goplus/llgo/internal/runtime.String" @"(github.com/goplus/llgo/internal/abi.Name).Tag"(%"github.com/goplus/llgo/internal/abi.Name")
-
-declare i1 @"(github.com/goplus/llgo/internal/abi.Name).IsExported"(%"github.com/goplus/llgo/internal/abi.Name")
-
-declare i1 @"(github.com/goplus/llgo/internal/abi.Name).IsEmbedded"(%"github.com/goplus/llgo/internal/abi.Name")
-
-declare i1 @"(github.com/goplus/llgo/internal/abi.Name).IsBlank"(%"github.com/goplus/llgo/internal/abi.Name")
-
-declare void @"github.com/goplus/llgo/internal/runtime.PrintString"(%"github.com/goplus/llgo/internal/runtime.String")
-
-declare void @"github.com/goplus/llgo/internal/runtime.PrintByte"(i8)
-
-declare void @"github.com/goplus/llgo/internal/runtime.PrintBool"(i1)
diff --git a/cl/_testgo/strucintf/out.ll b/cl/_testgo/strucintf/out.ll
index 964328d1..e9932f44 100644
--- a/cl/_testgo/strucintf/out.ll
+++ b/cl/_testgo/strucintf/out.ll
@@ -158,118 +158,85 @@ _llgo_10:                                         ; preds = %_llgo_0
   %45 = getelementptr inbounds { { i64 }, i1 }, ptr %43, i32 0, i32 1
   store i1 true, ptr %45, align 1
   %46 = load { { i64 }, i1 }, ptr %43, align 4
-  %47 = extractvalue { { i64 }, i1 } %46, 0
-  %48 = extractvalue { { i64 }, i1 } %46, 1
   br label %_llgo_12
 
 _llgo_11:                                         ; preds = %_llgo_0
-  %49 = alloca { { i64 }, i1 }, align 8
-  %50 = getelementptr inbounds { { i64 }, i1 }, ptr %49, i32 0, i32 0
-  store { i64 } zeroinitializer, ptr %50, align 4
-  %51 = getelementptr inbounds { { i64 }, i1 }, ptr %49, i32 0, i32 1
-  store i1 false, ptr %51, align 1
-  %52 = load { { i64 }, i1 }, ptr %49, align 4
-  %53 = extractvalue { { i64 }, i1 } %52, 0
-  %54 = extractvalue { { i64 }, i1 } %52, 1
+  %47 = alloca { { i64 }, i1 }, align 8
+  %48 = getelementptr inbounds { { i64 }, i1 }, ptr %47, i32 0, i32 0
+  store { i64 } zeroinitializer, ptr %48, align 4
+  %49 = getelementptr inbounds { { i64 }, i1 }, ptr %47, i32 0, i32 1
+  store i1 false, ptr %49, align 1
+  %50 = load { { i64 }, i1 }, ptr %47, align 4
   br label %_llgo_12
 
 _llgo_12:                                         ; preds = %_llgo_11, %_llgo_10
-  %55 = phi i64 [ %47, %_llgo_10 ], [ %53, %_llgo_11 ]
-  %56 = phi i1 [ %48, %_llgo_10 ], [ %54, %_llgo_11 ]
-  %57 = alloca { { i64 }, i1 }, align 8
-  %58 = getelementptr inbounds { { i64 }, i1 }, ptr %57, i32 0, i32 0
-  store i64 %55, ptr %58, align 4
-  %59 = getelementptr inbounds { { i64 }, i1 }, ptr %57, i32 0, i32 1
-  store i1 %56, ptr %59, align 1
-  %60 = load { { i64 }, i1 }, ptr %57, align 4
-  %61 = extractvalue { { i64 }, i1 } %60, 0
-  store { i64 } %61, ptr %4, align 4
-  %62 = extractvalue { { i64 }, i1 } %60, 1
-  br i1 %62, label %_llgo_1, label %_llgo_3
+  %51 = phi { { i64 }, i1 } [ %46, %_llgo_10 ], [ %50, %_llgo_11 ]
+  %52 = extractvalue { { i64 }, i1 } %51, 0
+  store { i64 } %52, ptr %4, align 4
+  %53 = extractvalue { { i64 }, i1 } %51, 1
+  br i1 %53, label %_llgo_1, label %_llgo_3
 
 _llgo_13:                                         ; preds = %_llgo_2
-  %63 = extractvalue %"github.com/goplus/llgo/internal/runtime.eface" %10, 1
-  %64 = ptrtoint ptr %63 to i64
-  %65 = alloca { i64 }, align 8
-  %66 = getelementptr inbounds { i64 }, ptr %65, i32 0, i32 0
-  store i64 %64, ptr %66, align 4
-  %67 = load { i64 }, ptr %65, align 4
-  %68 = alloca { { i64 }, i1 }, align 8
-  %69 = getelementptr inbounds { { i64 }, i1 }, ptr %68, i32 0, i32 0
-  store { i64 } %67, ptr %69, align 4
-  %70 = getelementptr inbounds { { i64 }, i1 }, ptr %68, i32 0, i32 1
-  store i1 true, ptr %70, align 1
-  %71 = load { { i64 }, i1 }, ptr %68, align 4
-  %72 = extractvalue { { i64 }, i1 } %71, 0
-  %73 = extractvalue { { i64 }, i1 } %71, 1
+  %54 = extractvalue %"github.com/goplus/llgo/internal/runtime.eface" %10, 1
+  %55 = ptrtoint ptr %54 to i64
+  %56 = alloca { i64 }, align 8
+  %57 = getelementptr inbounds { i64 }, ptr %56, i32 0, i32 0
+  store i64 %55, ptr %57, align 4
+  %58 = load { i64 }, ptr %56, align 4
+  %59 = alloca { { i64 }, i1 }, align 8
+  %60 = getelementptr inbounds { { i64 }, i1 }, ptr %59, i32 0, i32 0
+  store { i64 } %58, ptr %60, align 4
+  %61 = getelementptr inbounds { { i64 }, i1 }, ptr %59, i32 0, i32 1
+  store i1 true, ptr %61, align 1
+  %62 = load { { i64 }, i1 }, ptr %59, align 4
   br label %_llgo_15
 
 _llgo_14:                                         ; preds = %_llgo_2
-  %74 = alloca { { i64 }, i1 }, align 8
-  %75 = getelementptr inbounds { { i64 }, i1 }, ptr %74, i32 0, i32 0
-  store { i64 } zeroinitializer, ptr %75, align 4
-  %76 = getelementptr inbounds { { i64 }, i1 }, ptr %74, i32 0, i32 1
-  store i1 false, ptr %76, align 1
-  %77 = load { { i64 }, i1 }, ptr %74, align 4
-  %78 = extractvalue { { i64 }, i1 } %77, 0
-  %79 = extractvalue { { i64 }, i1 } %77, 1
+  %63 = alloca { { i64 }, i1 }, align 8
+  %64 = getelementptr inbounds { { i64 }, i1 }, ptr %63, i32 0, i32 0
+  store { i64 } zeroinitializer, ptr %64, align 4
+  %65 = getelementptr inbounds { { i64 }, i1 }, ptr %63, i32 0, i32 1
+  store i1 false, ptr %65, align 1
+  %66 = load { { i64 }, i1 }, ptr %63, align 4
   br label %_llgo_15
 
 _llgo_15:                                         ; preds = %_llgo_14, %_llgo_13
-  %80 = phi i64 [ %72, %_llgo_13 ], [ %78, %_llgo_14 ]
-  %81 = phi i1 [ %73, %_llgo_13 ], [ %79, %_llgo_14 ]
-  %82 = alloca { { i64 }, i1 }, align 8
-  %83 = getelementptr inbounds { { i64 }, i1 }, ptr %82, i32 0, i32 0
-  store i64 %80, ptr %83, align 4
-  %84 = getelementptr inbounds { { i64 }, i1 }, ptr %82, i32 0, i32 1
-  store i1 %81, ptr %84, align 1
-  %85 = load { { i64 }, i1 }, ptr %82, align 4
-  %86 = extractvalue { { i64 }, i1 } %85, 0
-  store { i64 } %86, ptr %12, align 4
-  %87 = extractvalue { { i64 }, i1 } %85, 1
-  br i1 %87, label %_llgo_4, label %_llgo_6
+  %67 = phi { { i64 }, i1 } [ %62, %_llgo_13 ], [ %66, %_llgo_14 ]
+  %68 = extractvalue { { i64 }, i1 } %67, 0
+  store { i64 } %68, ptr %12, align 4
+  %69 = extractvalue { { i64 }, i1 } %67, 1
+  br i1 %69, label %_llgo_4, label %_llgo_6
 
 _llgo_16:                                         ; preds = %_llgo_5
-  %88 = extractvalue %"github.com/goplus/llgo/internal/runtime.eface" %24, 1
-  %89 = ptrtoint ptr %88 to i64
-  %90 = alloca { i64 }, align 8
-  %91 = getelementptr inbounds { i64 }, ptr %90, i32 0, i32 0
-  store i64 %89, ptr %91, align 4
-  %92 = load { i64 }, ptr %90, align 4
-  %93 = alloca { { i64 }, i1 }, align 8
-  %94 = getelementptr inbounds { { i64 }, i1 }, ptr %93, i32 0, i32 0
-  store { i64 } %92, ptr %94, align 4
-  %95 = getelementptr inbounds { { i64 }, i1 }, ptr %93, i32 0, i32 1
-  store i1 true, ptr %95, align 1
-  %96 = load { { i64 }, i1 }, ptr %93, align 4
-  %97 = extractvalue { { i64 }, i1 } %96, 0
-  %98 = extractvalue { { i64 }, i1 } %96, 1
+  %70 = extractvalue %"github.com/goplus/llgo/internal/runtime.eface" %24, 1
+  %71 = ptrtoint ptr %70 to i64
+  %72 = alloca { i64 }, align 8
+  %73 = getelementptr inbounds { i64 }, ptr %72, i32 0, i32 0
+  store i64 %71, ptr %73, align 4
+  %74 = load { i64 }, ptr %72, align 4
+  %75 = alloca { { i64 }, i1 }, align 8
+  %76 = getelementptr inbounds { { i64 }, i1 }, ptr %75, i32 0, i32 0
+  store { i64 } %74, ptr %76, align 4
+  %77 = getelementptr inbounds { { i64 }, i1 }, ptr %75, i32 0, i32 1
+  store i1 true, ptr %77, align 1
+  %78 = load { { i64 }, i1 }, ptr %75, align 4
   br label %_llgo_18
 
 _llgo_17:                                         ; preds = %_llgo_5
-  %99 = alloca { { i64 }, i1 }, align 8
-  %100 = getelementptr inbounds { { i64 }, i1 }, ptr %99, i32 0, i32 0
-  store { i64 } zeroinitializer, ptr %100, align 4
-  %101 = getelementptr inbounds { { i64 }, i1 }, ptr %99, i32 0, i32 1
-  store i1 false, ptr %101, align 1
-  %102 = load { { i64 }, i1 }, ptr %99, align 4
-  %103 = extractvalue { { i64 }, i1 } %102, 0
-  %104 = extractvalue { { i64 }, i1 } %102, 1
+  %79 = alloca { { i64 }, i1 }, align 8
+  %80 = getelementptr inbounds { { i64 }, i1 }, ptr %79, i32 0, i32 0
+  store { i64 } zeroinitializer, ptr %80, align 4
+  %81 = getelementptr inbounds { { i64 }, i1 }, ptr %79, i32 0, i32 1
+  store i1 false, ptr %81, align 1
+  %82 = load { { i64 }, i1 }, ptr %79, align 4
   br label %_llgo_18
 
 _llgo_18:                                         ; preds = %_llgo_17, %_llgo_16
-  %105 = phi i64 [ %97, %_llgo_16 ], [ %103, %_llgo_17 ]
-  %106 = phi i1 [ %98, %_llgo_16 ], [ %104, %_llgo_17 ]
-  %107 = alloca { { i64 }, i1 }, align 8
-  %108 = getelementptr inbounds { { i64 }, i1 }, ptr %107, i32 0, i32 0
-  store i64 %105, ptr %108, align 4
-  %109 = getelementptr inbounds { { i64 }, i1 }, ptr %107, i32 0, i32 1
-  store i1 %106, ptr %109, align 1
-  %110 = load { { i64 }, i1 }, ptr %107, align 4
-  %111 = extractvalue { { i64 }, i1 } %110, 0
-  store { i64 } %111, ptr %23, align 4
-  %112 = extractvalue { { i64 }, i1 } %110, 1
-  br i1 %112, label %_llgo_7, label %_llgo_9
+  %83 = phi { { i64 }, i1 } [ %78, %_llgo_16 ], [ %82, %_llgo_17 ]
+  %84 = extractvalue { { i64 }, i1 } %83, 0
+  store { i64 } %84, ptr %23, align 4
+  %85 = extractvalue { { i64 }, i1 } %83, 1
+  br i1 %85, label %_llgo_7, label %_llgo_9
 }
 
 declare ptr @"github.com/goplus/llgo/internal/runtime.Zeroinit"(ptr, i64)
diff --git a/cl/_testgo/struczero/in.go b/cl/_testgo/struczero/in.go
index 589b75f2..ce583d11 100644
--- a/cl/_testgo/struczero/in.go
+++ b/cl/_testgo/struczero/in.go
@@ -20,6 +20,7 @@ func Bar(v any) (ret foo.Foo, ok bool) {
 func main() {
 	ret, ok := Foo(nil)
 	println(ret.pb, ret.f, "notOk:", !ok)
+
 	ret2, ok2 := Bar(foo.Foo{})
 	println(ret2.Pb(), ret2.F, ok2)
 }
diff --git a/cl/_testgo/struczero/out.ll b/cl/_testgo/struczero/out.ll
index 60b85986..a47925bb 100644
--- a/cl/_testgo/struczero/out.ll
+++ b/cl/_testgo/struczero/out.ll
@@ -1,103 +1,77 @@
 ; ModuleID = 'main'
 source_filename = "main"
 
-%"github.com/goplus/llgo/cl/internal/foo.Foo" = type { ptr, float }
-%"github.com/goplus/llgo/internal/runtime.eface" = type { ptr, ptr }
 %main.bar = type { ptr, float }
+%"github.com/goplus/llgo/internal/runtime.eface" = type { ptr, ptr }
 %"github.com/goplus/llgo/internal/runtime.String" = type { ptr, i64 }
-%"github.com/goplus/llgo/internal/abi.StructField" = type { %"github.com/goplus/llgo/internal/abi.Name", ptr, i64 }
-%"github.com/goplus/llgo/internal/abi.Name" = type { ptr }
+%"github.com/goplus/llgo/internal/abi.StructField" = type { %"github.com/goplus/llgo/internal/runtime.String", ptr, i64, %"github.com/goplus/llgo/internal/runtime.String", i1 }
 %"github.com/goplus/llgo/internal/runtime.Slice" = type { ptr, i64, i64 }
 
 @"main.init$guard" = global ptr null
-@"github.com/goplus/llgo/cl/internal/foo.Foo" = linkonce global ptr null
+@0 = private unnamed_addr constant [4 x i8] c"Foo\00", align 1
 @main.bar = global ptr null
+@1 = private unnamed_addr constant [9 x i8] c"Foo done\00", align 1
 @__llgo_argc = global ptr null
 @__llgo_argv = global ptr null
-@0 = private unnamed_addr constant [7 x i8] c"notOk:\00", align 1
-@1 = private unnamed_addr constant [3 x i8] c"pb\00", align 1
+@2 = private unnamed_addr constant [5 x i8] c"main\00", align 1
+@3 = private unnamed_addr constant [7 x i8] c"notOk:\00", align 1
+@4 = private unnamed_addr constant [3 x i8] c"pb\00", align 1
 @"*_llgo_byte" = linkonce global ptr null
-@2 = private unnamed_addr constant [1 x i8] zeroinitializer, align 1
-@3 = private unnamed_addr constant [2 x i8] c"F\00", align 1
-@4 = private unnamed_addr constant [1 x i8] zeroinitializer, align 1
-@5 = private unnamed_addr constant [5 x i8] c"main\00", align 1
-@6 = private unnamed_addr constant [43 x i8] c"github.com/goplus/llgo/cl/internal/foo.Foo\00", align 1
-@7 = private unnamed_addr constant [3 x i8] c"pb\00", align 1
-@8 = private unnamed_addr constant [1 x i8] zeroinitializer, align 1
-@9 = private unnamed_addr constant [2 x i8] c"f\00", align 1
-@10 = private unnamed_addr constant [1 x i8] zeroinitializer, align 1
-@11 = private unnamed_addr constant [5 x i8] c"main\00", align 1
-@12 = private unnamed_addr constant [9 x i8] c"main.bar\00", align 1
-
-define { %"github.com/goplus/llgo/cl/internal/foo.Foo", i1 } @main.Bar(%"github.com/goplus/llgo/internal/runtime.eface" %0) {
-_llgo_0:
-  %1 = extractvalue %"github.com/goplus/llgo/internal/runtime.eface" %0, 0
-  %2 = load ptr, ptr @"github.com/goplus/llgo/cl/internal/foo.Foo", align 8
-  %3 = icmp eq ptr %1, %2
-  br i1 %3, label %_llgo_1, label %_llgo_2
-
-_llgo_1:                                          ; preds = %_llgo_0
-  %4 = extractvalue %"github.com/goplus/llgo/internal/runtime.eface" %0, 1
-  %5 = load %"github.com/goplus/llgo/cl/internal/foo.Foo", ptr %4, align 8
-  %6 = alloca { %"github.com/goplus/llgo/cl/internal/foo.Foo", i1 }, align 8
-  %7 = getelementptr inbounds { %"github.com/goplus/llgo/cl/internal/foo.Foo", i1 }, ptr %6, i32 0, i32 0
-  store %"github.com/goplus/llgo/cl/internal/foo.Foo" %5, ptr %7, align 8
-  %8 = getelementptr inbounds { %"github.com/goplus/llgo/cl/internal/foo.Foo", i1 }, ptr %6, i32 0, i32 1
-  store i1 true, ptr %8, align 1
-  %9 = load { %"github.com/goplus/llgo/cl/internal/foo.Foo", i1 }, ptr %6, align 8
-  br label %_llgo_3
-
-_llgo_2:                                          ; preds = %_llgo_0
-  %10 = alloca { %"github.com/goplus/llgo/cl/internal/foo.Foo", i1 }, align 8
-  %11 = getelementptr inbounds { %"github.com/goplus/llgo/cl/internal/foo.Foo", i1 }, ptr %10, i32 0, i32 0
-  store { ptr, double } zeroinitializer, ptr %11, align 8
-  %12 = getelementptr inbounds { %"github.com/goplus/llgo/cl/internal/foo.Foo", i1 }, ptr %10, i32 0, i32 1
-  store i1 false, ptr %12, align 1
-  %13 = load { %"github.com/goplus/llgo/cl/internal/foo.Foo", i1 }, ptr %10, align 8
-  br label %_llgo_3
-
-_llgo_3:                                          ; preds = %_llgo_2, %_llgo_1
-  %14 = phi { %"github.com/goplus/llgo/cl/internal/foo.Foo", i1 } [ %9, %_llgo_1 ], [ %13, %_llgo_2 ]
-  %15 = extractvalue { %"github.com/goplus/llgo/cl/internal/foo.Foo", i1 } %14, 0
-  %16 = extractvalue { %"github.com/goplus/llgo/cl/internal/foo.Foo", i1 } %14, 1
-  %mrv = insertvalue { %"github.com/goplus/llgo/cl/internal/foo.Foo", i1 } poison, %"github.com/goplus/llgo/cl/internal/foo.Foo" %15, 0
-  %mrv1 = insertvalue { %"github.com/goplus/llgo/cl/internal/foo.Foo", i1 } %mrv, i1 %16, 1
-  ret { %"github.com/goplus/llgo/cl/internal/foo.Foo", i1 } %mrv1
-}
+@5 = private unnamed_addr constant [1 x i8] zeroinitializer, align 1
+@6 = private unnamed_addr constant [2 x i8] c"f\00", align 1
+@7 = private unnamed_addr constant [1 x i8] zeroinitializer, align 1
+@8 = private unnamed_addr constant [5 x i8] c"main\00", align 1
+@9 = private unnamed_addr constant [9 x i8] c"main.bar\00", align 1
 
 define { %main.bar, i1 } @main.Foo(%"github.com/goplus/llgo/internal/runtime.eface" %0) {
 _llgo_0:
-  %1 = extractvalue %"github.com/goplus/llgo/internal/runtime.eface" %0, 0
-  %2 = load ptr, ptr @main.bar, align 8
-  %3 = icmp eq ptr %1, %2
-  br i1 %3, label %_llgo_1, label %_llgo_2
+  %1 = alloca %"github.com/goplus/llgo/internal/runtime.String", align 8
+  %2 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %1, i32 0, i32 0
+  store ptr @0, ptr %2, align 8
+  %3 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %1, i32 0, i32 1
+  store i64 3, ptr %3, align 4
+  %4 = load %"github.com/goplus/llgo/internal/runtime.String", ptr %1, align 8
+  call void @"github.com/goplus/llgo/internal/runtime.PrintString"(%"github.com/goplus/llgo/internal/runtime.String" %4)
+  call void @"github.com/goplus/llgo/internal/runtime.PrintByte"(i8 10)
+  %5 = extractvalue %"github.com/goplus/llgo/internal/runtime.eface" %0, 0
+  %6 = load ptr, ptr @main.bar, align 8
+  %7 = icmp eq ptr %5, %6
+  br i1 %7, label %_llgo_1, label %_llgo_2
 
 _llgo_1:                                          ; preds = %_llgo_0
-  %4 = extractvalue %"github.com/goplus/llgo/internal/runtime.eface" %0, 1
-  %5 = load %main.bar, ptr %4, align 8
-  %6 = alloca { %main.bar, i1 }, align 8
-  %7 = getelementptr inbounds { %main.bar, i1 }, ptr %6, i32 0, i32 0
-  store %main.bar %5, ptr %7, align 8
-  %8 = getelementptr inbounds { %main.bar, i1 }, ptr %6, i32 0, i32 1
-  store i1 true, ptr %8, align 1
-  %9 = load { %main.bar, i1 }, ptr %6, align 8
-  br label %_llgo_3
-
-_llgo_2:                                          ; preds = %_llgo_0
+  %8 = extractvalue %"github.com/goplus/llgo/internal/runtime.eface" %0, 1
+  %9 = load %main.bar, ptr %8, align 8
   %10 = alloca { %main.bar, i1 }, align 8
   %11 = getelementptr inbounds { %main.bar, i1 }, ptr %10, i32 0, i32 0
-  store { ptr, double } zeroinitializer, ptr %11, align 8
+  store %main.bar %9, ptr %11, align 8
   %12 = getelementptr inbounds { %main.bar, i1 }, ptr %10, i32 0, i32 1
-  store i1 false, ptr %12, align 1
+  store i1 true, ptr %12, align 1
   %13 = load { %main.bar, i1 }, ptr %10, align 8
   br label %_llgo_3
 
+_llgo_2:                                          ; preds = %_llgo_0
+  %14 = alloca { %main.bar, i1 }, align 8
+  %15 = getelementptr inbounds { %main.bar, i1 }, ptr %14, i32 0, i32 0
+  store { ptr, double } zeroinitializer, ptr %15, align 8
+  %16 = getelementptr inbounds { %main.bar, i1 }, ptr %14, i32 0, i32 1
+  store i1 false, ptr %16, align 1
+  %17 = load { %main.bar, i1 }, ptr %14, align 8
+  br label %_llgo_3
+
 _llgo_3:                                          ; preds = %_llgo_2, %_llgo_1
-  %14 = phi { %main.bar, i1 } [ %9, %_llgo_1 ], [ %13, %_llgo_2 ]
-  %15 = extractvalue { %main.bar, i1 } %14, 0
-  %16 = extractvalue { %main.bar, i1 } %14, 1
-  %mrv = insertvalue { %main.bar, i1 } poison, %main.bar %15, 0
-  %mrv1 = insertvalue { %main.bar, i1 } %mrv, i1 %16, 1
+  %18 = phi { %main.bar, i1 } [ %13, %_llgo_1 ], [ %17, %_llgo_2 ]
+  %19 = extractvalue { %main.bar, i1 } %18, 0
+  %20 = extractvalue { %main.bar, i1 } %18, 1
+  %21 = alloca %"github.com/goplus/llgo/internal/runtime.String", align 8
+  %22 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %21, i32 0, i32 0
+  store ptr @1, ptr %22, align 8
+  %23 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %21, i32 0, i32 1
+  store i64 8, ptr %23, align 4
+  %24 = load %"github.com/goplus/llgo/internal/runtime.String", ptr %21, align 8
+  call void @"github.com/goplus/llgo/internal/runtime.PrintString"(%"github.com/goplus/llgo/internal/runtime.String" %24)
+  call void @"github.com/goplus/llgo/internal/runtime.PrintByte"(i8 10)
+  %mrv = insertvalue { %main.bar, i1 } poison, %main.bar %19, 0
+  %mrv1 = insertvalue { %main.bar, i1 } %mrv, i1 %20, 1
   ret { %main.bar, i1 } %mrv1
 }
 
@@ -108,7 +82,6 @@ _llgo_0:
 
 _llgo_1:                                          ; preds = %_llgo_0
   store i1 true, ptr @"main.init$guard", align 1
-  call void @"github.com/goplus/llgo/cl/internal/foo.init"()
   call void @"main.init$abi"()
   br label %_llgo_2
 
@@ -122,62 +95,46 @@ _llgo_0:
   store ptr %1, ptr @__llgo_argv, align 8
   call void @"github.com/goplus/llgo/internal/runtime.init"()
   call void @main.init()
-  %2 = alloca %main.bar, align 8
-  %3 = call ptr @"github.com/goplus/llgo/internal/runtime.Zeroinit"(ptr %2, i64 16)
-  %4 = call { %main.bar, i1 } @main.Foo(%"github.com/goplus/llgo/internal/runtime.eface" zeroinitializer)
-  %5 = extractvalue { %main.bar, i1 } %4, 0
-  store %main.bar %5, ptr %3, align 8
-  %6 = extractvalue { %main.bar, i1 } %4, 1
-  %7 = getelementptr inbounds %main.bar, ptr %3, i32 0, i32 0
-  %8 = load ptr, ptr %7, align 8
-  %9 = getelementptr inbounds %main.bar, ptr %3, i32 0, i32 1
-  %10 = load float, ptr %9, align 4
-  %11 = xor i1 %6, true
-  %12 = alloca %"github.com/goplus/llgo/internal/runtime.String", align 8
-  %13 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %12, i32 0, i32 0
-  store ptr @0, ptr %13, align 8
-  %14 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %12, i32 0, i32 1
-  store i64 6, ptr %14, align 4
-  %15 = load %"github.com/goplus/llgo/internal/runtime.String", ptr %12, align 8
-  call void @"github.com/goplus/llgo/internal/runtime.PrintPointer"(ptr %8)
-  call void @"github.com/goplus/llgo/internal/runtime.PrintByte"(i8 32)
-  %16 = fpext float %10 to double
-  call void @"github.com/goplus/llgo/internal/runtime.PrintFloat"(double %16)
-  call void @"github.com/goplus/llgo/internal/runtime.PrintByte"(i8 32)
-  call void @"github.com/goplus/llgo/internal/runtime.PrintString"(%"github.com/goplus/llgo/internal/runtime.String" %15)
-  call void @"github.com/goplus/llgo/internal/runtime.PrintByte"(i8 32)
-  call void @"github.com/goplus/llgo/internal/runtime.PrintBool"(i1 %11)
+  %2 = alloca %"github.com/goplus/llgo/internal/runtime.String", align 8
+  %3 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %2, i32 0, i32 0
+  store ptr @2, ptr %3, align 8
+  %4 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %2, i32 0, i32 1
+  store i64 4, ptr %4, align 4
+  %5 = load %"github.com/goplus/llgo/internal/runtime.String", ptr %2, align 8
+  call void @"github.com/goplus/llgo/internal/runtime.PrintString"(%"github.com/goplus/llgo/internal/runtime.String" %5)
   call void @"github.com/goplus/llgo/internal/runtime.PrintByte"(i8 10)
-  %17 = alloca %"github.com/goplus/llgo/cl/internal/foo.Foo", align 8
-  %18 = call ptr @"github.com/goplus/llgo/internal/runtime.Zeroinit"(ptr %17, i64 16)
-  %19 = load ptr, ptr @"github.com/goplus/llgo/cl/internal/foo.Foo", align 8
-  %20 = call ptr @"github.com/goplus/llgo/internal/runtime.AllocU"(i64 16)
-  store %"github.com/goplus/llgo/cl/internal/foo.Foo" zeroinitializer, ptr %20, align 8
-  %21 = alloca %"github.com/goplus/llgo/internal/runtime.eface", align 8
-  %22 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.eface", ptr %21, i32 0, i32 0
-  store ptr %19, ptr %22, align 8
-  %23 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.eface", ptr %21, i32 0, i32 1
-  store ptr %20, ptr %23, align 8
-  %24 = load %"github.com/goplus/llgo/internal/runtime.eface", ptr %21, align 8
-  %25 = call { %"github.com/goplus/llgo/cl/internal/foo.Foo", i1 } @main.Bar(%"github.com/goplus/llgo/internal/runtime.eface" %24)
-  %26 = extractvalue { %"github.com/goplus/llgo/cl/internal/foo.Foo", i1 } %25, 0
-  store %"github.com/goplus/llgo/cl/internal/foo.Foo" %26, ptr %18, align 8
-  %27 = extractvalue { %"github.com/goplus/llgo/cl/internal/foo.Foo", i1 } %25, 1
-  %28 = load %"github.com/goplus/llgo/cl/internal/foo.Foo", ptr %18, align 8
-  %29 = call ptr @"(github.com/goplus/llgo/cl/internal/foo.Foo).Pb"(%"github.com/goplus/llgo/cl/internal/foo.Foo" %28)
-  %30 = getelementptr inbounds %"github.com/goplus/llgo/cl/internal/foo.Foo", ptr %18, i32 0, i32 1
-  %31 = load float, ptr %30, align 4
-  call void @"github.com/goplus/llgo/internal/runtime.PrintPointer"(ptr %29)
+  %6 = alloca %main.bar, align 8
+  %7 = call ptr @"github.com/goplus/llgo/internal/runtime.Zeroinit"(ptr %6, i64 16)
+  %8 = call { %main.bar, i1 } @main.Foo(%"github.com/goplus/llgo/internal/runtime.eface" zeroinitializer)
+  %9 = extractvalue { %main.bar, i1 } %8, 0
+  store %main.bar %9, ptr %7, align 8
+  %10 = extractvalue { %main.bar, i1 } %8, 1
+  %11 = getelementptr inbounds %main.bar, ptr %7, i32 0, i32 0
+  %12 = load ptr, ptr %11, align 8
+  %13 = getelementptr inbounds %main.bar, ptr %7, i32 0, i32 1
+  %14 = load float, ptr %13, align 4
+  %15 = xor i1 %10, true
+  %16 = alloca %"github.com/goplus/llgo/internal/runtime.String", align 8
+  %17 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %16, i32 0, i32 0
+  store ptr @3, ptr %17, align 8
+  %18 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %16, i32 0, i32 1
+  store i64 6, ptr %18, align 4
+  %19 = load %"github.com/goplus/llgo/internal/runtime.String", ptr %16, align 8
+  call void @"github.com/goplus/llgo/internal/runtime.PrintPointer"(ptr %12)
   call void @"github.com/goplus/llgo/internal/runtime.PrintByte"(i8 32)
-  %32 = fpext float %31 to double
-  call void @"github.com/goplus/llgo/internal/runtime.PrintFloat"(double %32)
+  %20 = fpext float %14 to double
+  call void @"github.com/goplus/llgo/internal/runtime.PrintFloat"(double %20)
   call void @"github.com/goplus/llgo/internal/runtime.PrintByte"(i8 32)
-  call void @"github.com/goplus/llgo/internal/runtime.PrintBool"(i1 %27)
+  call void @"github.com/goplus/llgo/internal/runtime.PrintString"(%"github.com/goplus/llgo/internal/runtime.String" %19)
+  call void @"github.com/goplus/llgo/internal/runtime.PrintByte"(i8 32)
+  call void @"github.com/goplus/llgo/internal/runtime.PrintBool"(i1 %15)
   call void @"github.com/goplus/llgo/internal/runtime.PrintByte"(i8 10)
   ret i32 0
 }
 
-declare void @"github.com/goplus/llgo/cl/internal/foo.init"()
+declare void @"github.com/goplus/llgo/internal/runtime.PrintString"(%"github.com/goplus/llgo/internal/runtime.String")
+
+declare void @"github.com/goplus/llgo/internal/runtime.PrintByte"(i8)
 
 declare void @"github.com/goplus/llgo/internal/runtime.init"()
 
@@ -185,147 +142,77 @@ declare ptr @"github.com/goplus/llgo/internal/runtime.Zeroinit"(ptr, i64)
 
 declare void @"github.com/goplus/llgo/internal/runtime.PrintPointer"(ptr)
 
-declare void @"github.com/goplus/llgo/internal/runtime.PrintByte"(i8)
-
 declare void @"github.com/goplus/llgo/internal/runtime.PrintFloat"(double)
 
-declare void @"github.com/goplus/llgo/internal/runtime.PrintString"(%"github.com/goplus/llgo/internal/runtime.String")
-
 declare void @"github.com/goplus/llgo/internal/runtime.PrintBool"(i1)
 
-declare ptr @"github.com/goplus/llgo/internal/runtime.AllocU"(i64)
-
-declare ptr @"(github.com/goplus/llgo/cl/internal/foo.Foo).Pb"(%"github.com/goplus/llgo/cl/internal/foo.Foo")
-
 define void @"main.init$abi"() {
 _llgo_0:
-  %0 = load ptr, ptr @"github.com/goplus/llgo/cl/internal/foo.Foo", align 8
-  %1 = icmp eq ptr %0, null
-  br i1 %1, label %_llgo_1, label %_llgo_2
-
-_llgo_1:                                          ; preds = %_llgo_0
-  %2 = alloca %"github.com/goplus/llgo/internal/runtime.String", align 8
-  %3 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %2, i32 0, i32 0
-  store ptr @1, ptr %3, align 8
-  %4 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %2, i32 0, i32 1
-  store i64 2, ptr %4, align 4
-  %5 = load %"github.com/goplus/llgo/internal/runtime.String", ptr %2, align 8
-  %6 = load ptr, ptr @"*_llgo_byte", align 8
-  %7 = alloca %"github.com/goplus/llgo/internal/runtime.String", align 8
-  %8 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %7, i32 0, i32 0
-  store ptr @2, ptr %8, align 8
-  %9 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %7, i32 0, i32 1
-  store i64 0, ptr %9, align 4
-  %10 = load %"github.com/goplus/llgo/internal/runtime.String", ptr %7, align 8
-  %11 = call %"github.com/goplus/llgo/internal/abi.StructField" @"github.com/goplus/llgo/internal/runtime.StructField"(%"github.com/goplus/llgo/internal/runtime.String" %5, ptr %6, i64 0, %"github.com/goplus/llgo/internal/runtime.String" %10, i1 false, i1 false)
-  %12 = alloca %"github.com/goplus/llgo/internal/runtime.String", align 8
-  %13 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %12, i32 0, i32 0
-  store ptr @3, ptr %13, align 8
-  %14 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %12, i32 0, i32 1
-  store i64 1, ptr %14, align 4
-  %15 = load %"github.com/goplus/llgo/internal/runtime.String", ptr %12, align 8
-  %16 = call ptr @"github.com/goplus/llgo/internal/runtime.Basic"(i64 13)
-  %17 = alloca %"github.com/goplus/llgo/internal/runtime.String", align 8
-  %18 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %17, i32 0, i32 0
-  store ptr @4, ptr %18, align 8
-  %19 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %17, i32 0, i32 1
-  store i64 0, ptr %19, align 4
-  %20 = load %"github.com/goplus/llgo/internal/runtime.String", ptr %17, align 8
-  %21 = call %"github.com/goplus/llgo/internal/abi.StructField" @"github.com/goplus/llgo/internal/runtime.StructField"(%"github.com/goplus/llgo/internal/runtime.String" %15, ptr %16, i64 8, %"github.com/goplus/llgo/internal/runtime.String" %20, i1 true, i1 false)
-  %22 = alloca %"github.com/goplus/llgo/internal/runtime.String", align 8
-  %23 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %22, i32 0, i32 0
-  store ptr @5, ptr %23, align 8
-  %24 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %22, i32 0, i32 1
-  store i64 4, ptr %24, align 4
-  %25 = load %"github.com/goplus/llgo/internal/runtime.String", ptr %22, align 8
-  %26 = call ptr @"github.com/goplus/llgo/internal/runtime.AllocU"(i64 48)
-  %27 = getelementptr %"github.com/goplus/llgo/internal/abi.StructField", ptr %26, i64 0
-  store %"github.com/goplus/llgo/internal/abi.StructField" %11, ptr %27, align 8
-  %28 = getelementptr %"github.com/goplus/llgo/internal/abi.StructField", ptr %26, i64 1
-  store %"github.com/goplus/llgo/internal/abi.StructField" %21, ptr %28, align 8
-  %29 = alloca %"github.com/goplus/llgo/internal/runtime.Slice", align 8
-  %30 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.Slice", ptr %29, i32 0, i32 0
-  store ptr %26, ptr %30, align 8
-  %31 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.Slice", ptr %29, i32 0, i32 1
-  store i64 2, ptr %31, align 4
-  %32 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.Slice", ptr %29, i32 0, i32 2
-  store i64 2, ptr %32, align 4
-  %33 = load %"github.com/goplus/llgo/internal/runtime.Slice", ptr %29, align 8
-  %34 = call ptr @"github.com/goplus/llgo/internal/runtime.Struct"(%"github.com/goplus/llgo/internal/runtime.String" %25, %"github.com/goplus/llgo/internal/runtime.Slice" %33)
-  %35 = alloca %"github.com/goplus/llgo/internal/runtime.String", align 8
-  %36 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %35, i32 0, i32 0
-  store ptr @6, ptr %36, align 8
-  %37 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %35, i32 0, i32 1
-  store i64 42, ptr %37, align 4
-  %38 = load %"github.com/goplus/llgo/internal/runtime.String", ptr %35, align 8
-  %39 = call ptr @"github.com/goplus/llgo/internal/runtime.Named"(%"github.com/goplus/llgo/internal/runtime.String" %38, ptr %34)
-  store ptr %39, ptr @"github.com/goplus/llgo/cl/internal/foo.Foo", align 8
-  br label %_llgo_2
-
-_llgo_2:                                          ; preds = %_llgo_1, %_llgo_0
-  %40 = alloca %"github.com/goplus/llgo/internal/runtime.String", align 8
-  %41 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %40, i32 0, i32 0
-  store ptr @7, ptr %41, align 8
-  %42 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %40, i32 0, i32 1
-  store i64 2, ptr %42, align 4
-  %43 = load %"github.com/goplus/llgo/internal/runtime.String", ptr %40, align 8
-  %44 = load ptr, ptr @"*_llgo_byte", align 8
-  %45 = alloca %"github.com/goplus/llgo/internal/runtime.String", align 8
-  %46 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %45, i32 0, i32 0
-  store ptr @8, ptr %46, align 8
-  %47 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %45, i32 0, i32 1
-  store i64 0, ptr %47, align 4
-  %48 = load %"github.com/goplus/llgo/internal/runtime.String", ptr %45, align 8
-  %49 = call %"github.com/goplus/llgo/internal/abi.StructField" @"github.com/goplus/llgo/internal/runtime.StructField"(%"github.com/goplus/llgo/internal/runtime.String" %43, ptr %44, i64 0, %"github.com/goplus/llgo/internal/runtime.String" %48, i1 false, i1 false)
-  %50 = alloca %"github.com/goplus/llgo/internal/runtime.String", align 8
-  %51 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %50, i32 0, i32 0
-  store ptr @9, ptr %51, align 8
-  %52 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %50, i32 0, i32 1
-  store i64 1, ptr %52, align 4
-  %53 = load %"github.com/goplus/llgo/internal/runtime.String", ptr %50, align 8
-  %54 = call ptr @"github.com/goplus/llgo/internal/runtime.Basic"(i64 13)
-  %55 = alloca %"github.com/goplus/llgo/internal/runtime.String", align 8
-  %56 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %55, i32 0, i32 0
-  store ptr @10, ptr %56, align 8
-  %57 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %55, i32 0, i32 1
-  store i64 0, ptr %57, align 4
-  %58 = load %"github.com/goplus/llgo/internal/runtime.String", ptr %55, align 8
-  %59 = call %"github.com/goplus/llgo/internal/abi.StructField" @"github.com/goplus/llgo/internal/runtime.StructField"(%"github.com/goplus/llgo/internal/runtime.String" %53, ptr %54, i64 8, %"github.com/goplus/llgo/internal/runtime.String" %58, i1 false, i1 false)
-  %60 = alloca %"github.com/goplus/llgo/internal/runtime.String", align 8
-  %61 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %60, i32 0, i32 0
-  store ptr @11, ptr %61, align 8
-  %62 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %60, i32 0, i32 1
-  store i64 4, ptr %62, align 4
-  %63 = load %"github.com/goplus/llgo/internal/runtime.String", ptr %60, align 8
-  %64 = call ptr @"github.com/goplus/llgo/internal/runtime.AllocU"(i64 48)
-  %65 = getelementptr %"github.com/goplus/llgo/internal/abi.StructField", ptr %64, i64 0
-  store %"github.com/goplus/llgo/internal/abi.StructField" %49, ptr %65, align 8
-  %66 = getelementptr %"github.com/goplus/llgo/internal/abi.StructField", ptr %64, i64 1
-  store %"github.com/goplus/llgo/internal/abi.StructField" %59, ptr %66, align 8
-  %67 = alloca %"github.com/goplus/llgo/internal/runtime.Slice", align 8
-  %68 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.Slice", ptr %67, i32 0, i32 0
-  store ptr %64, ptr %68, align 8
-  %69 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.Slice", ptr %67, i32 0, i32 1
-  store i64 2, ptr %69, align 4
-  %70 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.Slice", ptr %67, i32 0, i32 2
-  store i64 2, ptr %70, align 4
-  %71 = load %"github.com/goplus/llgo/internal/runtime.Slice", ptr %67, align 8
-  %72 = call ptr @"github.com/goplus/llgo/internal/runtime.Struct"(%"github.com/goplus/llgo/internal/runtime.String" %63, %"github.com/goplus/llgo/internal/runtime.Slice" %71)
-  %73 = alloca %"github.com/goplus/llgo/internal/runtime.String", align 8
-  %74 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %73, i32 0, i32 0
-  store ptr @12, ptr %74, align 8
-  %75 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %73, i32 0, i32 1
-  store i64 8, ptr %75, align 4
-  %76 = load %"github.com/goplus/llgo/internal/runtime.String", ptr %73, align 8
-  %77 = call ptr @"github.com/goplus/llgo/internal/runtime.Named"(%"github.com/goplus/llgo/internal/runtime.String" %76, ptr %72)
-  store ptr %77, ptr @main.bar, align 8
+  %0 = alloca %"github.com/goplus/llgo/internal/runtime.String", align 8
+  %1 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %0, i32 0, i32 0
+  store ptr @4, ptr %1, align 8
+  %2 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %0, i32 0, i32 1
+  store i64 2, ptr %2, align 4
+  %3 = load %"github.com/goplus/llgo/internal/runtime.String", ptr %0, align 8
+  %4 = load ptr, ptr @"*_llgo_byte", align 8
+  %5 = alloca %"github.com/goplus/llgo/internal/runtime.String", align 8
+  %6 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %5, i32 0, i32 0
+  store ptr @5, ptr %6, align 8
+  %7 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %5, i32 0, i32 1
+  store i64 0, ptr %7, align 4
+  %8 = load %"github.com/goplus/llgo/internal/runtime.String", ptr %5, align 8
+  %9 = call %"github.com/goplus/llgo/internal/abi.StructField" @"github.com/goplus/llgo/internal/runtime.StructField"(%"github.com/goplus/llgo/internal/runtime.String" %3, ptr %4, i64 0, %"github.com/goplus/llgo/internal/runtime.String" %8, i1 false)
+  %10 = alloca %"github.com/goplus/llgo/internal/runtime.String", align 8
+  %11 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %10, i32 0, i32 0
+  store ptr @6, ptr %11, align 8
+  %12 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %10, i32 0, i32 1
+  store i64 1, ptr %12, align 4
+  %13 = load %"github.com/goplus/llgo/internal/runtime.String", ptr %10, align 8
+  %14 = call ptr @"github.com/goplus/llgo/internal/runtime.Basic"(i64 13)
+  %15 = alloca %"github.com/goplus/llgo/internal/runtime.String", align 8
+  %16 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %15, i32 0, i32 0
+  store ptr @7, ptr %16, align 8
+  %17 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %15, i32 0, i32 1
+  store i64 0, ptr %17, align 4
+  %18 = load %"github.com/goplus/llgo/internal/runtime.String", ptr %15, align 8
+  %19 = call %"github.com/goplus/llgo/internal/abi.StructField" @"github.com/goplus/llgo/internal/runtime.StructField"(%"github.com/goplus/llgo/internal/runtime.String" %13, ptr %14, i64 8, %"github.com/goplus/llgo/internal/runtime.String" %18, i1 false)
+  %20 = alloca %"github.com/goplus/llgo/internal/runtime.String", align 8
+  %21 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %20, i32 0, i32 0
+  store ptr @8, ptr %21, align 8
+  %22 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %20, i32 0, i32 1
+  store i64 4, ptr %22, align 4
+  %23 = load %"github.com/goplus/llgo/internal/runtime.String", ptr %20, align 8
+  %24 = call ptr @"github.com/goplus/llgo/internal/runtime.AllocU"(i64 112)
+  %25 = getelementptr %"github.com/goplus/llgo/internal/abi.StructField", ptr %24, i64 0
+  store %"github.com/goplus/llgo/internal/abi.StructField" %9, ptr %25, align 8
+  %26 = getelementptr %"github.com/goplus/llgo/internal/abi.StructField", ptr %24, i64 1
+  store %"github.com/goplus/llgo/internal/abi.StructField" %19, ptr %26, align 8
+  %27 = alloca %"github.com/goplus/llgo/internal/runtime.Slice", align 8
+  %28 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.Slice", ptr %27, i32 0, i32 0
+  store ptr %24, ptr %28, align 8
+  %29 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.Slice", ptr %27, i32 0, i32 1
+  store i64 2, ptr %29, align 4
+  %30 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.Slice", ptr %27, i32 0, i32 2
+  store i64 2, ptr %30, align 4
+  %31 = load %"github.com/goplus/llgo/internal/runtime.Slice", ptr %27, align 8
+  %32 = call ptr @"github.com/goplus/llgo/internal/runtime.Struct"(%"github.com/goplus/llgo/internal/runtime.String" %23, i64 16, %"github.com/goplus/llgo/internal/runtime.Slice" %31)
+  %33 = alloca %"github.com/goplus/llgo/internal/runtime.String", align 8
+  %34 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %33, i32 0, i32 0
+  store ptr @9, ptr %34, align 8
+  %35 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %33, i32 0, i32 1
+  store i64 8, ptr %35, align 4
+  %36 = load %"github.com/goplus/llgo/internal/runtime.String", ptr %33, align 8
+  %37 = call ptr @"github.com/goplus/llgo/internal/runtime.Named"(%"github.com/goplus/llgo/internal/runtime.String" %36, ptr %32)
+  store ptr %37, ptr @main.bar, align 8
   ret void
 }
 
-declare ptr @"github.com/goplus/llgo/internal/runtime.Struct"(i64, %"github.com/goplus/llgo/internal/runtime.String", %"github.com/goplus/llgo/internal/runtime.Slice")
+declare ptr @"github.com/goplus/llgo/internal/runtime.Struct"(%"github.com/goplus/llgo/internal/runtime.String", i64, %"github.com/goplus/llgo/internal/runtime.Slice")
 
-declare %"github.com/goplus/llgo/internal/abi.StructField" @"github.com/goplus/llgo/internal/runtime.StructField"(%"github.com/goplus/llgo/internal/runtime.String", ptr, i64, %"github.com/goplus/llgo/internal/runtime.String", i1, i1)
+declare %"github.com/goplus/llgo/internal/abi.StructField" @"github.com/goplus/llgo/internal/runtime.StructField"(%"github.com/goplus/llgo/internal/runtime.String", ptr, i64, %"github.com/goplus/llgo/internal/runtime.String", i1)
 
 declare ptr @"github.com/goplus/llgo/internal/runtime.Basic"(i64)
 
-declare ptr @"github.com/goplus/llgo/internal/runtime.Named"(%"github.com/goplus/llgo/internal/runtime.String", ptr)
+declare ptr @"github.com/goplus/llgo/internal/runtime.AllocU"(i64)
+
+declare ptr @"github.com/goplus/llgo/internal/runtime.Named"(%"github.com/goplus/llgo/internal/runtime.String", %"github.com/goplus/llgo/internal/runtime.String", ptr, %"github.com/goplus/llgo/internal/runtime.Slice")
diff --git a/cl/_testrt/concat/out.ll b/cl/_testrt/concat/out.ll
index 7217f45f..1ef2685d 100644
--- a/cl/_testrt/concat/out.ll
+++ b/cl/_testrt/concat/out.ll
@@ -25,37 +25,26 @@ _llgo_0:
   %4 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %2, i32 0, i32 1
   store i64 0, ptr %4, align 4
   %5 = load %"github.com/goplus/llgo/internal/runtime.String", ptr %2, align 8
-  %6 = extractvalue %"github.com/goplus/llgo/internal/runtime.String" %5, 0
-  %7 = extractvalue %"github.com/goplus/llgo/internal/runtime.String" %5, 1
   br label %_llgo_1
 
 _llgo_1:                                          ; preds = %_llgo_2, %_llgo_0
-  %8 = phi ptr [ %6, %_llgo_0 ], [ %22, %_llgo_2 ]
-  %9 = phi i64 [ %7, %_llgo_0 ], [ %23, %_llgo_2 ]
-  %10 = alloca %"github.com/goplus/llgo/internal/runtime.String", align 8
-  %11 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %10, i32 0, i32 0
-  store ptr %8, ptr %11, align 8
-  %12 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %10, i32 0, i32 1
-  store i64 %9, ptr %12, align 4
-  %13 = load %"github.com/goplus/llgo/internal/runtime.String", ptr %10, align 8
-  %14 = phi i64 [ -1, %_llgo_0 ], [ %15, %_llgo_2 ]
-  %15 = add i64 %14, 1
-  %16 = icmp slt i64 %15, %1
-  br i1 %16, label %_llgo_2, label %_llgo_3
+  %6 = phi %"github.com/goplus/llgo/internal/runtime.String" [ %5, %_llgo_0 ], [ %14, %_llgo_2 ]
+  %7 = phi i64 [ -1, %_llgo_0 ], [ %8, %_llgo_2 ]
+  %8 = add i64 %7, 1
+  %9 = icmp slt i64 %8, %1
+  br i1 %9, label %_llgo_2, label %_llgo_3
 
 _llgo_2:                                          ; preds = %_llgo_1
-  %17 = icmp slt i64 %15, 0
-  call void @"github.com/goplus/llgo/internal/runtime.AssertIndexRange"(i1 %17)
-  %18 = extractvalue %"github.com/goplus/llgo/internal/runtime.Slice" %0, 0
-  %19 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %18, i64 %15
-  %20 = load %"github.com/goplus/llgo/internal/runtime.String", ptr %19, align 8
-  %21 = call %"github.com/goplus/llgo/internal/runtime.String" @"github.com/goplus/llgo/internal/runtime.StringCat"(%"github.com/goplus/llgo/internal/runtime.String" %13, %"github.com/goplus/llgo/internal/runtime.String" %20)
-  %22 = extractvalue %"github.com/goplus/llgo/internal/runtime.String" %21, 0
-  %23 = extractvalue %"github.com/goplus/llgo/internal/runtime.String" %21, 1
+  %10 = icmp slt i64 %8, 0
+  call void @"github.com/goplus/llgo/internal/runtime.AssertIndexRange"(i1 %10)
+  %11 = extractvalue %"github.com/goplus/llgo/internal/runtime.Slice" %0, 0
+  %12 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %11, i64 %8
+  %13 = load %"github.com/goplus/llgo/internal/runtime.String", ptr %12, align 8
+  %14 = call %"github.com/goplus/llgo/internal/runtime.String" @"github.com/goplus/llgo/internal/runtime.StringCat"(%"github.com/goplus/llgo/internal/runtime.String" %6, %"github.com/goplus/llgo/internal/runtime.String" %13)
   br label %_llgo_1
 
 _llgo_3:                                          ; preds = %_llgo_1
-  ret %"github.com/goplus/llgo/internal/runtime.String" %13
+  ret %"github.com/goplus/llgo/internal/runtime.String" %6
 }
 
 define %"github.com/goplus/llgo/internal/runtime.String" @main.info(%"github.com/goplus/llgo/internal/runtime.String" %0) {
diff --git a/internal/abi/llgo_autogen.lla b/internal/abi/llgo_autogen.lla
index 728e9013..2eb60535 100644
Binary files a/internal/abi/llgo_autogen.lla and b/internal/abi/llgo_autogen.lla differ
diff --git a/internal/abi/type.go b/internal/abi/type.go
index a6a01d85..8cf09096 100644
--- a/internal/abi/type.go
+++ b/internal/abi/type.go
@@ -20,6 +20,15 @@ import (
 	"unsafe"
 )
 
+// IsExported reports whether name starts with an upper-case letter.
+func IsExported(name string) bool {
+	if len(name) > 0 {
+		c := name[0]
+		return 'A' <= c && c <= 'Z'
+	}
+	return false
+}
+
 // -----------------------------------------------------------------------------
 
 // Type is the runtime representation of a Go type.
@@ -46,8 +55,8 @@ type Type struct {
 	// If the KindGCProg bit is set in kind, GCData is a GC program.
 	// Otherwise it is a ptrmask bitmap. See mbitmap.go for details.
 	GCData     *byte
-	Str_       Name  // string form
-	PtrToThis_ *Type // type for pointer to this type, may be nil
+	Str_       string // string form
+	PtrToThis_ *Type  // type for pointer to this type, may be nil
 }
 
 // A Kind represents the specific kind of type that a Type represents.
@@ -209,32 +218,41 @@ func (p *FuncType) Variadic() bool {
 }
 
 type StructField struct {
-	Name   Name    // name is always non-empty
+	Name_  string  // name is always non-empty
 	Typ    *Type   // type of field
 	Offset uintptr // byte offset of field
+
+	Tag_      string
+	Embedded_ bool
 }
 
+// Embedded reports whether the field is embedded.
 func (f *StructField) Embedded() bool {
-	return f.Name.IsEmbedded()
+	return f.Embedded_
+}
+
+// Exported reports whether the field is exported.
+func (f *StructField) Exported() bool {
+	return IsExported(f.Name_)
 }
 
 type StructType struct {
 	Type
-	PkgPath Name
-	Fields  []StructField
+	PkgPath_ string
+	Fields   []StructField
 }
 
 type InterfaceType struct {
 	Type
-	PkgPath Name      // import path
-	Methods []Imethod // sorted by hash
+	PkgPath_ string    // import path
+	Methods  []Imethod // sorted by hash
 }
 
 type Text = unsafe.Pointer // TODO(xsw): to be confirmed
 
 // Method on non-interface type
 type Method struct {
-	Name_ Name      // name of method
+	Name_ string    // name of method
 	Mtyp_ *FuncType // method type (without receiver)
 	Ifn_  Text      // fn used in interface call (one-word receiver)
 	Tfn_  Text      // fn used for normal method call
@@ -242,7 +260,7 @@ type Method struct {
 
 // Exported reports whether the method is exported.
 func (p *Method) Exported() bool {
-	return p.Name_.IsExported()
+	return IsExported(p.Name_)
 }
 
 // UncommonType is present only for defined types or types with methods
@@ -250,7 +268,7 @@ func (p *Method) Exported() bool {
 // Using a pointer to this struct reduces the overall size required
 // to describe a non-defined type with no methods.
 type UncommonType struct {
-	PkgPath_ Name   // import path; empty for built-in types like int, string
+	PkgPath_ string // import path; empty for built-in types like int, string
 	Mcount   uint16 // number of methods
 	Xcount   uint16 // number of exported methods
 	Moff     uint32 // offset from this uncommontype to [mcount]Method
@@ -272,7 +290,7 @@ func (t *UncommonType) ExportedMethods() []Method {
 
 // Imethod represents a method on an interface type
 type Imethod struct {
-	Name_ Name      // name of method
+	Name_ string    // name of method
 	Typ_  *FuncType // .(*FuncType) underneath
 }
 
@@ -438,6 +456,7 @@ func addChecked(p unsafe.Pointer, x uintptr, whySafe string) unsafe.Pointer {
 	return unsafe.Pointer(uintptr(p) + x)
 }
 
+/*
 // Name is an encoded type Name with optional extra data.
 //
 // The first byte is a bit field containing:
@@ -588,5 +607,6 @@ func NewName(n, tag string, exported, embedded bool) Name {
 
 	return Name{Bytes: &b[0]}
 }
+*/
 
 // -----------------------------------------------------------------------------
diff --git a/internal/runtime/llgo_autogen.lla b/internal/runtime/llgo_autogen.lla
index 8bb2787b..6b788455 100644
Binary files a/internal/runtime/llgo_autogen.lla and b/internal/runtime/llgo_autogen.lla differ
diff --git a/internal/runtime/z_face.go b/internal/runtime/z_face.go
index 01907b0a..c7611fd3 100644
--- a/internal/runtime/z_face.go
+++ b/internal/runtime/z_face.go
@@ -86,7 +86,7 @@ func Func(in, out []*Type, variadic bool) *FuncType {
 }
 
 // Imethod returns an interface method.
-func Imethod(name Name, typ *FuncType) abi.Imethod {
+func Imethod(name string, typ *FuncType) abi.Imethod {
 	return abi.Imethod{
 		Name_: name,
 		Typ_:  typ,
@@ -94,7 +94,7 @@ func Imethod(name Name, typ *FuncType) abi.Imethod {
 }
 
 // Method returns a method.
-func Method(name Name, typ *FuncType, ifn, tfn abi.Text) abi.Method {
+func Method(name string, typ *FuncType, ifn, tfn abi.Text) abi.Method {
 	return abi.Method{
 		Name_: name,
 		Mtyp_: typ,
@@ -104,11 +104,11 @@ func Method(name Name, typ *FuncType, ifn, tfn abi.Text) abi.Method {
 }
 
 // Named returns a named type.
-func Named(pkgPath, name Name, underlying *Type, methods []abi.Method) *Type {
+func Named(pkgPath, name string, underlying *Type, methods []abi.Method) *Type {
 	tflag := underlying.TFlag
 	size := typeHdrSize
 	n := len(methods)
-	if n > 0 || pkgPath.Bytes != nil {
+	if n > 0 || pkgPath != "" {
 		size += uncommonTypeHdrSize + uintptr(n)*methodSize
 		tflag |= abi.TFlagUncommon
 	}
@@ -139,15 +139,15 @@ func Named(pkgPath, name Name, underlying *Type, methods []abi.Method) *Type {
 }
 
 // Interface returns an interface type.
-func Interface(pkgPath Name, methods []abi.Imethod) *Type {
+func Interface(pkgPath string, methods []abi.Imethod) *Type {
 	ret := &abi.InterfaceType{
 		Type: Type{
 			Size_: unsafe.Sizeof(eface{}),
 			Hash:  uint32(abi.Interface), // TODO(xsw): hash
 			Kind_: uint8(abi.Interface),
 		},
-		PkgPath: pkgPath,
-		Methods: methods,
+		PkgPath_: pkgPath,
+		Methods:  methods,
 	}
 	return &ret.Type
 }
@@ -168,7 +168,7 @@ func NewItab(inter *InterfaceType, typ *Type) *Itab {
 		ret.fun[0] = 0
 	} else {
 		data := (*uintptr)(c.Advance(ptr, int(itabHdrSize)))
-		mthds := methods(u, inter.PkgPath)
+		mthds := methods(u, inter.PkgPath_)
 		for i, m := range inter.Methods {
 			fn := findMethod(mthds, m)
 			if fn == nil {
@@ -182,9 +182,9 @@ func NewItab(inter *InterfaceType, typ *Type) *Itab {
 }
 
 func findMethod(mthds []abi.Method, im abi.Imethod) abi.Text {
-	imName := im.Name_.Name()
+	imName := im.Name_
 	for _, m := range mthds {
-		mName := m.Name_.Name()
+		mName := m.Name_
 		if mName >= imName {
 			if mName == imName && m.Mtyp_ == im.Typ_ {
 				return m.Ifn_
@@ -195,8 +195,8 @@ func findMethod(mthds []abi.Method, im abi.Imethod) abi.Text {
 	return nil
 }
 
-func methods(u *abi.UncommonType, from abi.Name) []abi.Method {
-	if u.PkgPath_.Name() == from.Name() {
+func methods(u *abi.UncommonType, from string) []abi.Method {
+	if u.PkgPath_ == from {
 		return u.Methods()
 	}
 	return u.ExportedMethods()
diff --git a/internal/runtime/z_type.go b/internal/runtime/z_type.go
index dfe2a4d4..aa4431bb 100644
--- a/internal/runtime/z_type.go
+++ b/internal/runtime/z_type.go
@@ -23,11 +23,13 @@ import (
 )
 
 type Kind = abi.Kind
-type Name = abi.Name
 type Type = abi.Type
 
 // -----------------------------------------------------------------------------
 
+/*
+type Name = abi.Name
+
 // NewName creates a new name.
 func NewName(name string, exported bool) Name {
 	return abi.NewName(name, "", exported, false)
@@ -40,6 +42,7 @@ func NewPkgName(pkgPath string) (ret Name) {
 	}
 	return
 }
+*/
 
 // -----------------------------------------------------------------------------
 
@@ -102,25 +105,26 @@ func basicType(kind abi.Kind) *Type {
 // -----------------------------------------------------------------------------
 
 // StructField returns a struct field.
-func StructField(name string, typ *Type, off uintptr, tag string, exported, embedded bool) abi.StructField {
-	n := abi.NewName(name, tag, exported, embedded)
+func StructField(name string, typ *Type, off uintptr, tag string, embedded bool) abi.StructField {
 	return abi.StructField{
-		Name:   n,
-		Typ:    typ,
-		Offset: off,
+		Name_:     name,
+		Typ:       typ,
+		Offset:    off,
+		Tag_:      tag,
+		Embedded_: embedded,
 	}
 }
 
 // Struct returns a struct type.
-func Struct(pkgPath Name, size uintptr, fields ...abi.StructField) *Type {
+func Struct(pkgPath string, size uintptr, fields ...abi.StructField) *Type {
 	ret := &abi.StructType{
 		Type: Type{
 			Size_: size,
 			Hash:  uint32(abi.Struct), // TODO(xsw): hash
 			Kind_: uint8(abi.Struct),
 		},
-		PkgPath: pkgPath,
-		Fields:  fields,
+		PkgPath_: pkgPath,
+		Fields:   fields,
 	}
 	return &ret.Type
 }
diff --git a/ssa/cl_test.go b/ssa/cl_test.go
index e65de0f7..513944c1 100644
--- a/ssa/cl_test.go
+++ b/ssa/cl_test.go
@@ -26,7 +26,7 @@ import (
 )
 
 func TestFromTestgo(t *testing.T) {
-	cltest.FromDir(t, "strucintf", "../cl/_testgo", false)
+	cltest.FromDir(t, "", "../cl/_testgo", false)
 }
 
 func TestFromTestpy(t *testing.T) {
diff --git a/ssa/expr.go b/ssa/expr.go
index ca48328e..5e7b50af 100644
--- a/ssa/expr.go
+++ b/ssa/expr.go
@@ -91,6 +91,8 @@ func (p Program) Zero(t Type) Expr {
 			flds[i] = p.Zero(p.rawType(u.Field(i).Type())).impl
 		}
 		ret = llvm.ConstStruct(flds, false)
+	case *types.Slice:
+		ret = p.Zero(p.rtType("Slice")).impl
 	default:
 		log.Panicln("todo:", u)
 	}
@@ -193,7 +195,8 @@ func (b Builder) Str(v string) (ret Expr) {
 
 func (b Builder) pkgName(pkgPath string) Expr {
 	// TODO(xsw): use a global cache
-	return b.Call(b.Pkg.rtFunc("NewPkgName"), b.Str(pkgPath))
+	// return b.Call(b.Pkg.rtFunc("NewPkgName"), b.Str(pkgPath))
+	return b.Str(pkgPath)
 }
 
 // unsafeString(data *byte, size int) string
@@ -513,38 +516,42 @@ func llvmPredBlocks(preds []BasicBlock) []llvm.BasicBlock {
 
 type aPhi struct {
 	Expr
-	phis []llvm.Value
+	// phis []llvm.Value
 }
 
 // Phi represents a phi node.
 type Phi = *aPhi
 
+/*
 func (b Builder) newPhi(t Type, phis []llvm.Value) Phi {
 	ret := b.aggregateValue(t, phis...)
 	return &aPhi{ret, phis}
 }
+*/
 
 // AddIncoming adds incoming values to a phi node.
 func (p Phi) AddIncoming(b Builder, preds []BasicBlock, f func(i int, blk BasicBlock) Expr) {
 	bs := llvmPredBlocks(preds)
-	phis := p.phis
-	if phis != nil {
-		vals := make([][]llvm.Value, len(phis))
-		for iblk, blk := range preds {
-			val := f(iblk, blk).impl
-			impl := b.impl
-			b.SetBlockEx(blk, BeforeLast, false)
-			for i := range phis {
-				if iblk == 0 {
-					vals[i] = make([]llvm.Value, len(preds))
+	/*
+		phis := p.phis
+		if phis != nil {
+			vals := make([][]llvm.Value, len(phis))
+			for iblk, blk := range preds {
+				val := f(iblk, blk).impl
+				impl := b.impl
+				b.SetBlockEx(blk, BeforeLast, false)
+				for i := range phis {
+					if iblk == 0 {
+						vals[i] = make([]llvm.Value, len(preds))
+					}
+					vals[i][iblk] = llvm.CreateExtractValue(impl, val, i)
 				}
-				vals[i][iblk] = llvm.CreateExtractValue(impl, val, i)
 			}
-		}
-		for i, phi := range phis {
-			phi.AddIncoming(vals[i], bs)
-		}
-	} else {
+			for i, phi := range phis {
+				phi.AddIncoming(vals[i], bs)
+			}
+		} else */
+	{
 		vals := make([]llvm.Value, len(preds))
 		for iblk, blk := range preds {
 			vals[iblk] = f(iblk, blk).impl
@@ -556,24 +563,27 @@ func (p Phi) AddIncoming(b Builder, preds []BasicBlock, f func(i int, blk BasicB
 // Phi returns a phi node.
 func (b Builder) Phi(t Type) Phi {
 	impl := b.impl
-	switch tund := t.raw.Type.Underlying().(type) {
-	case *types.Basic:
-		kind := tund.Kind()
-		switch kind {
-		case types.String:
-			phis := createStringPhis(impl, make([]llvm.Value, 0, 2), b.Prog)
+	/*
+		switch tund := t.raw.Type.Underlying().(type) {
+		case *types.Basic:
+			kind := tund.Kind()
+			switch kind {
+			case types.String:
+				phis := createStringPhis(impl, make([]llvm.Value, 0, 2), b.Prog)
+				return b.newPhi(t, phis)
+			}
+		case *types.Struct:
+			phis := createStrucPhis(impl, nil, tund, b.Prog)
 			return b.newPhi(t, phis)
+		default:
+			log.Panicf("todo: %T\n", tund)
 		}
-	case *types.Struct:
-		phis := createStrucPhis(impl, nil, tund, b.Prog)
-		return b.newPhi(t, phis)
-	default:
-		log.Panicf("todo: %T\n", tund)
-	}
+	*/
 	phi := llvm.CreatePHI(impl, t.ll)
-	return &aPhi{Expr{phi, t}, nil}
+	return &aPhi{Expr{phi, t}} //, nil}
 }
 
+/*
 func createStringPhis(b llvm.Builder, phis []llvm.Value, prog Program) []llvm.Value {
 	phis = append(phis, llvm.CreatePHI(b, prog.tyVoidPtr()))
 	return append(phis, llvm.CreatePHI(b, prog.tyInt()))
@@ -611,6 +621,7 @@ func createBasicPhi(b llvm.Builder, phis []llvm.Value, t types.Type, prog Progra
 	phi := llvm.CreatePHI(b, tll)
 	return append(phis, phi)
 }
+*/
 
 // -----------------------------------------------------------------------------
 
diff --git a/ssa/interface.go b/ssa/interface.go
index 696a782f..217d231a 100644
--- a/ssa/interface.go
+++ b/ssa/interface.go
@@ -59,10 +59,19 @@ func (b Builder) abiTypeOf(t types.Type) Expr {
 	panic("todo")
 }
 
+// func Named(pkgPath, name string, underlying *Type, methods []abi.Method)
 func (b Builder) abiNamedOf(t *types.Named) Expr {
 	under := b.abiTypeOf(t.Underlying())
 	name := NameOf(t)
-	return b.Call(b.Pkg.rtFunc("Named"), b.Str(name), under)
+
+	prog := b.Prog
+	pkg := b.Pkg
+	pkgPath := b.pkgName(pkg.Path())
+	fn := pkg.rtFunc("Named")
+	tSlice := lastParamType(prog, fn)
+	// TODO(xsw): methods
+	methods := prog.Zero(tSlice)
+	return b.Call(fn, pkgPath, b.Str(name), under, methods)
 }
 
 func (b Builder) abiPointerOf(t *types.Pointer) Expr {
@@ -70,7 +79,7 @@ func (b Builder) abiPointerOf(t *types.Pointer) Expr {
 	return b.Call(b.Pkg.rtFunc("Pointer"), elem)
 }
 
-// func Struct(size uintptr, pkgPath string, fields []abi.StructField) *abi.Type
+// func Struct(pkgPath string, size uintptr, fields []abi.StructField)
 func (b Builder) abiStructOf(t *types.Struct) Expr {
 	pkg := b.Pkg
 	prog := b.Prog
@@ -85,20 +94,23 @@ func (b Builder) abiStructOf(t *types.Struct) Expr {
 		flds[i] = b.structField(sfAbi, prog, f, off, t.Tag(i))
 	}
 	pkgPath := b.pkgName(pkg.Path())
-	params := strucAbi.raw.Type.(*types.Signature).Params()
-	tSlice := prog.rawType(params.At(params.Len() - 1).Type().(*types.Slice))
+	tSlice := lastParamType(prog, strucAbi)
 	fldSlice := b.SliceLit(tSlice, flds...)
 	size := prog.IntVal(prog.SizeOf(typ), prog.Uintptr())
 	return b.Call(strucAbi, pkgPath, size, fldSlice)
 }
 
-// func StructField(name string, typ *abi.Type, off uintptr, tag string, exported, embedded bool) abi.StructField
+func lastParamType(prog Program, fn Expr) Type {
+	params := fn.raw.Type.(*types.Signature).Params()
+	return prog.rawType(params.At(params.Len() - 1).Type())
+}
+
+// func StructField(name string, typ *abi.Type, off uintptr, tag string, embedded bool) abi.StructField
 func (b Builder) structField(sfAbi Expr, prog Program, f *types.Var, offset uintptr, tag string) Expr {
 	name := b.Str(f.Name())
 	typ := b.abiType(f.Type())
-	exported := prog.Val(f.Exported())
 	embedded := prog.Val(f.Embedded())
-	return b.Call(sfAbi, name, typ, prog.Val(offset), b.Str(tag), exported, embedded)
+	return b.Call(sfAbi, name, typ, prog.Val(offset), b.Str(tag), embedded)
 }
 
 // abiType returns the abi type of the specified type.