diff --git a/cl/_testdata/vargs/out.ll b/cl/_testdata/vargs/out.ll
index 1c06f3f1..668d704b 100644
--- a/cl/_testdata/vargs/out.ll
+++ b/cl/_testdata/vargs/out.ll
@@ -12,6 +12,7 @@ source_filename = "main"
 @_llgo_int = linkonce global ptr null
 @0 = private unnamed_addr constant [4 x i8] c"%d\0A\00", align 1
 @1 = private unnamed_addr constant [22 x i8] c"type assertion failed\00", align 1
+@_llgo_string = linkonce global ptr null
 
 define void @main.init() {
 _llgo_0:
@@ -123,7 +124,16 @@ _llgo_5:                                          ; preds = %_llgo_2
   %17 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %15, i32 0, i32 1
   store i64 21, ptr %17, align 4
   %18 = load %"github.com/goplus/llgo/internal/runtime.String", ptr %15, align 8
-  call void @"github.com/goplus/llgo/internal/runtime.TracePanic"(%"github.com/goplus/llgo/internal/runtime.String" %18)
+  %19 = load ptr, ptr @_llgo_string, align 8
+  %20 = call ptr @"github.com/goplus/llgo/internal/runtime.AllocU"(i64 16)
+  store %"github.com/goplus/llgo/internal/runtime.String" %18, 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
+  call void @"github.com/goplus/llgo/internal/runtime.TracePanic"(%"github.com/goplus/llgo/internal/runtime.eface" %24)
   unreachable
 }
 
@@ -143,6 +153,16 @@ _llgo_1:                                          ; preds = %_llgo_0
   br label %_llgo_2
 
 _llgo_2:                                          ; preds = %_llgo_1, %_llgo_0
+  %3 = load ptr, ptr @_llgo_string, align 8
+  %4 = icmp eq ptr %3, null
+  br i1 %4, label %_llgo_3, label %_llgo_4
+
+_llgo_3:                                          ; preds = %_llgo_2
+  %5 = call ptr @"github.com/goplus/llgo/internal/runtime.Basic"(i64 24)
+  store ptr %5, ptr @_llgo_string, align 8
+  br label %_llgo_4
+
+_llgo_4:                                          ; preds = %_llgo_3, %_llgo_2
   ret void
 }
 
@@ -150,6 +170,8 @@ declare ptr @"github.com/goplus/llgo/internal/runtime.Basic"(i64)
 
 declare void @"github.com/goplus/llgo/internal/runtime.AssertIndexRange"(i1)
 
+declare ptr @"github.com/goplus/llgo/internal/runtime.AllocU"(i64)
+
 declare void @"github.com/goplus/llgo/internal/runtime.TracePanic"(%"github.com/goplus/llgo/internal/runtime.eface")
 
 declare i32 @printf(ptr, ...)
diff --git a/cl/_testgo/interface/in.go b/cl/_testgo/interface/in.go
new file mode 100644
index 00000000..46b026e4
--- /dev/null
+++ b/cl/_testgo/interface/in.go
@@ -0,0 +1,27 @@
+package main
+
+import (
+	"github.com/goplus/llgo/cl/internal/foo"
+)
+
+type Game1 struct {
+	*foo.Game
+}
+
+type Game2 struct {
+}
+
+func (p *Game2) initGame() {
+}
+
+func main() {
+	var g1 any = &Game1{&foo.Game{}}
+	var g2 any = &Game2{}
+	v1, ok := g1.(foo.Gamer)
+	println("OK", v1, ok)
+	if ok {
+		v1.Load()
+	}
+	v2, ok := g2.(foo.Gamer)
+	println("FAIL", v2, ok)
+}
diff --git a/cl/_testgo/interface/out.ll b/cl/_testgo/interface/out.ll
new file mode 100644
index 00000000..63c1ea92
--- /dev/null
+++ b/cl/_testgo/interface/out.ll
@@ -0,0 +1,584 @@
+; ModuleID = 'main'
+source_filename = "main"
+
+%main.Game1 = type { ptr }
+%"github.com/goplus/llgo/internal/runtime.eface" = type { ptr, ptr }
+%"github.com/goplus/llgo/internal/runtime.iface" = type { ptr, ptr }
+%"github.com/goplus/llgo/internal/runtime.String" = type { ptr, i64 }
+%"github.com/goplus/llgo/internal/runtime.Slice" = type { ptr, i64, i64 }
+%"github.com/goplus/llgo/internal/abi.Method" = type { %"github.com/goplus/llgo/internal/runtime.String", ptr, ptr, ptr }
+%"github.com/goplus/llgo/internal/abi.Imethod" = type { %"github.com/goplus/llgo/internal/runtime.String", 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 }
+
+@"main.init$guard" = global ptr null
+@__llgo_argc = global ptr null
+@__llgo_argv = global ptr null
+@"*_llgo_main.Game1" = linkonce global ptr null
+@_llgo_main.Game1 = linkonce global ptr null
+@_llgo_int = linkonce global ptr null
+@0 = private unnamed_addr constant [5 x i8] c"main\00", align 1
+@1 = private unnamed_addr constant [11 x i8] c"main.Game1\00", align 1
+@"*_llgo_main.Game2" = linkonce global ptr null
+@_llgo_main.Game2 = linkonce global ptr null
+@"_llgo_struct$n1H8J_3prDN3firMwPxBLVTkE5hJ9Di-AqNvaC9jczw" = linkonce global ptr null
+@2 = private unnamed_addr constant [5 x i8] c"main\00", align 1
+@3 = private unnamed_addr constant [9 x i8] c"initGame\00", align 1
+@4 = private unnamed_addr constant [14 x i8] c"main.initGame\00", align 1
+@"_llgo_func$2_iS07vIlF2_rZqWB5eU0IvP_9HviM4MYZNkXZDvbac" = linkonce global ptr null
+@5 = private unnamed_addr constant [5 x i8] c"main\00", align 1
+@6 = private unnamed_addr constant [11 x i8] c"main.Game2\00", align 1
+@"_llgo_github.com/goplus/llgo/cl/internal/foo.Gamer" = linkonce global ptr null
+@7 = private unnamed_addr constant [5 x i8] c"Load\00", align 1
+@8 = private unnamed_addr constant [48 x i8] c"github.com/goplus/llgo/cl/internal/foo.initGame\00", align 1
+@9 = private unnamed_addr constant [39 x i8] c"github.com/goplus/llgo/cl/internal/foo\00", align 1
+@10 = private unnamed_addr constant [45 x i8] c"github.com/goplus/llgo/cl/internal/foo.Gamer\00", align 1
+@"main.iface$sO8a1LvuUsjXwiwaC6sR9-L4DiYgiOnZi7iosyShJXg" = global ptr null
+@11 = private unnamed_addr constant [5 x i8] c"Load\00", align 1
+@12 = private unnamed_addr constant [48 x i8] c"github.com/goplus/llgo/cl/internal/foo.initGame\00", align 1
+@13 = private unnamed_addr constant [5 x i8] c"main\00", align 1
+@14 = private unnamed_addr constant [1 x i8] zeroinitializer, align 1
+@15 = private unnamed_addr constant [3 x i8] c"OK\00", align 1
+@16 = private unnamed_addr constant [5 x i8] c"FAIL\00", align 1
+
+define void @main.Game1.Load(%main.Game1 %0) {
+_llgo_0:
+  %1 = alloca %main.Game1, align 8
+  %2 = call ptr @"github.com/goplus/llgo/internal/runtime.Zeroinit"(ptr %1, i64 8)
+  store %main.Game1 %0, ptr %2, align 8
+  %3 = getelementptr inbounds %main.Game1, ptr %2, i32 0, i32 0
+  %4 = load ptr, ptr %3, align 8
+  call void @"github.com/goplus/llgo/cl/internal/foo.(*Game).Load"(ptr %4)
+  ret void
+}
+
+define void @main.Game1.initGame(%main.Game1 %0) {
+_llgo_0:
+  %1 = alloca %main.Game1, align 8
+  %2 = call ptr @"github.com/goplus/llgo/internal/runtime.Zeroinit"(ptr %1, i64 8)
+  store %main.Game1 %0, ptr %2, align 8
+  %3 = getelementptr inbounds %main.Game1, ptr %2, i32 0, i32 0
+  %4 = load ptr, ptr %3, align 8
+  call void @"github.com/goplus/llgo/cl/internal/foo.(*Game).initGame"(ptr %4)
+  ret void
+}
+
+define void @"main.(*Game1).Load"(ptr %0) {
+_llgo_0:
+  %1 = getelementptr inbounds %main.Game1, ptr %0, i32 0, i32 0
+  %2 = load ptr, ptr %1, align 8
+  call void @"github.com/goplus/llgo/cl/internal/foo.(*Game).Load"(ptr %2)
+  ret void
+}
+
+define void @"main.(*Game1).initGame"(ptr %0) {
+_llgo_0:
+  %1 = getelementptr inbounds %main.Game1, ptr %0, i32 0, i32 0
+  %2 = load ptr, ptr %1, align 8
+  call void @"github.com/goplus/llgo/cl/internal/foo.(*Game).initGame"(ptr %2)
+  ret void
+}
+
+define void @"main.(*Game2).initGame"(ptr %0) {
+_llgo_0:
+  ret void
+}
+
+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/cl/internal/foo.init"()
+  call void @"main.init$after"()
+  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 = call ptr @"github.com/goplus/llgo/internal/runtime.AllocZ"(i64 8)
+  %3 = getelementptr inbounds %main.Game1, ptr %2, i32 0, i32 0
+  %4 = call ptr @"github.com/goplus/llgo/internal/runtime.AllocZ"(i64 0)
+  store ptr %4, ptr %3, align 8
+  %5 = load ptr, ptr @"*_llgo_main.Game1", align 8
+  %6 = alloca %"github.com/goplus/llgo/internal/runtime.eface", align 8
+  %7 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.eface", ptr %6, i32 0, i32 0
+  store ptr %5, ptr %7, align 8
+  %8 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.eface", ptr %6, i32 0, i32 1
+  store ptr %2, ptr %8, align 8
+  %9 = load %"github.com/goplus/llgo/internal/runtime.eface", ptr %6, align 8
+  %10 = call ptr @"github.com/goplus/llgo/internal/runtime.AllocZ"(i64 0)
+  %11 = load ptr, ptr @"*_llgo_main.Game2", align 8
+  %12 = alloca %"github.com/goplus/llgo/internal/runtime.eface", align 8
+  %13 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.eface", ptr %12, i32 0, i32 0
+  store ptr %11, ptr %13, align 8
+  %14 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.eface", ptr %12, i32 0, i32 1
+  store ptr %10, ptr %14, align 8
+  %15 = load %"github.com/goplus/llgo/internal/runtime.eface", ptr %12, align 8
+  %16 = extractvalue %"github.com/goplus/llgo/internal/runtime.eface" %9, 0
+  %17 = load ptr, ptr @"_llgo_github.com/goplus/llgo/cl/internal/foo.Gamer", align 8
+  %18 = call i1 @"github.com/goplus/llgo/internal/runtime.Implements"(ptr %17, ptr %16)
+  br i1 %18, label %_llgo_3, label %_llgo_4
+
+_llgo_1:                                          ; preds = %_llgo_5
+  %19 = call ptr @"github.com/goplus/llgo/internal/runtime.IfacePtrData"(%"github.com/goplus/llgo/internal/runtime.iface" %48)
+  %20 = extractvalue %"github.com/goplus/llgo/internal/runtime.iface" %48, 0
+  %21 = getelementptr ptr, ptr %20, i64 3
+  %22 = load ptr, ptr %21, align 8
+  %23 = alloca { ptr, ptr }, align 8
+  %24 = getelementptr inbounds { ptr, ptr }, ptr %23, i32 0, i32 0
+  store ptr %22, ptr %24, align 8
+  %25 = getelementptr inbounds { ptr, ptr }, ptr %23, i32 0, i32 1
+  store ptr %19, ptr %25, align 8
+  %26 = load { ptr, ptr }, ptr %23, align 8
+  %27 = extractvalue { ptr, ptr } %26, 1
+  %28 = extractvalue { ptr, ptr } %26, 0
+  call void %28(ptr %27)
+  br label %_llgo_2
+
+_llgo_2:                                          ; preds = %_llgo_1, %_llgo_5
+  %29 = extractvalue %"github.com/goplus/llgo/internal/runtime.eface" %15, 0
+  %30 = load ptr, ptr @"_llgo_github.com/goplus/llgo/cl/internal/foo.Gamer", align 8
+  %31 = call i1 @"github.com/goplus/llgo/internal/runtime.Implements"(ptr %30, ptr %29)
+  br i1 %31, label %_llgo_6, label %_llgo_7
+
+_llgo_3:                                          ; preds = %_llgo_0
+  %32 = extractvalue %"github.com/goplus/llgo/internal/runtime.eface" %9, 1
+  %33 = load ptr, ptr @"main.iface$sO8a1LvuUsjXwiwaC6sR9-L4DiYgiOnZi7iosyShJXg", align 8
+  %34 = call ptr @"github.com/goplus/llgo/internal/runtime.NewItab"(ptr %33, ptr %16)
+  %35 = alloca %"github.com/goplus/llgo/internal/runtime.iface", align 8
+  %36 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.iface", ptr %35, i32 0, i32 0
+  store ptr %34, ptr %36, align 8
+  %37 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.iface", ptr %35, i32 0, i32 1
+  store ptr %32, ptr %37, align 8
+  %38 = load %"github.com/goplus/llgo/internal/runtime.iface", ptr %35, align 8
+  %39 = alloca { %"github.com/goplus/llgo/internal/runtime.iface", i1 }, align 8
+  %40 = getelementptr inbounds { %"github.com/goplus/llgo/internal/runtime.iface", i1 }, ptr %39, i32 0, i32 0
+  store %"github.com/goplus/llgo/internal/runtime.iface" %38, ptr %40, align 8
+  %41 = getelementptr inbounds { %"github.com/goplus/llgo/internal/runtime.iface", i1 }, ptr %39, i32 0, i32 1
+  store i1 true, ptr %41, align 1
+  %42 = load { %"github.com/goplus/llgo/internal/runtime.iface", i1 }, ptr %39, align 8
+  br label %_llgo_5
+
+_llgo_4:                                          ; preds = %_llgo_0
+  %43 = alloca { %"github.com/goplus/llgo/internal/runtime.iface", i1 }, align 8
+  %44 = getelementptr inbounds { %"github.com/goplus/llgo/internal/runtime.iface", i1 }, ptr %43, i32 0, i32 0
+  store { ptr, ptr } zeroinitializer, ptr %44, align 8
+  %45 = getelementptr inbounds { %"github.com/goplus/llgo/internal/runtime.iface", i1 }, ptr %43, i32 0, i32 1
+  store i1 false, ptr %45, align 1
+  %46 = load { %"github.com/goplus/llgo/internal/runtime.iface", i1 }, ptr %43, align 8
+  br label %_llgo_5
+
+_llgo_5:                                          ; preds = %_llgo_4, %_llgo_3
+  %47 = phi { %"github.com/goplus/llgo/internal/runtime.iface", i1 } [ %42, %_llgo_3 ], [ %46, %_llgo_4 ]
+  %48 = extractvalue { %"github.com/goplus/llgo/internal/runtime.iface", i1 } %47, 0
+  %49 = extractvalue { %"github.com/goplus/llgo/internal/runtime.iface", i1 } %47, 1
+  %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 @15, ptr %51, align 8
+  %52 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %50, i32 0, i32 1
+  store i64 2, ptr %52, align 4
+  %53 = load %"github.com/goplus/llgo/internal/runtime.String", ptr %50, align 8
+  call void @"github.com/goplus/llgo/internal/runtime.PrintString"(%"github.com/goplus/llgo/internal/runtime.String" %53)
+  call void @"github.com/goplus/llgo/internal/runtime.PrintByte"(i8 32)
+  call void @"github.com/goplus/llgo/internal/runtime.PrintIface"(%"github.com/goplus/llgo/internal/runtime.iface" %48)
+  call void @"github.com/goplus/llgo/internal/runtime.PrintByte"(i8 32)
+  call void @"github.com/goplus/llgo/internal/runtime.PrintBool"(i1 %49)
+  call void @"github.com/goplus/llgo/internal/runtime.PrintByte"(i8 10)
+  br i1 %49, label %_llgo_1, label %_llgo_2
+
+_llgo_6:                                          ; preds = %_llgo_2
+  %54 = extractvalue %"github.com/goplus/llgo/internal/runtime.eface" %15, 1
+  %55 = load ptr, ptr @"main.iface$sO8a1LvuUsjXwiwaC6sR9-L4DiYgiOnZi7iosyShJXg", align 8
+  %56 = call ptr @"github.com/goplus/llgo/internal/runtime.NewItab"(ptr %55, ptr %29)
+  %57 = alloca %"github.com/goplus/llgo/internal/runtime.iface", align 8
+  %58 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.iface", ptr %57, i32 0, i32 0
+  store ptr %56, ptr %58, align 8
+  %59 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.iface", ptr %57, i32 0, i32 1
+  store ptr %54, ptr %59, align 8
+  %60 = load %"github.com/goplus/llgo/internal/runtime.iface", ptr %57, align 8
+  %61 = alloca { %"github.com/goplus/llgo/internal/runtime.iface", i1 }, align 8
+  %62 = getelementptr inbounds { %"github.com/goplus/llgo/internal/runtime.iface", i1 }, ptr %61, i32 0, i32 0
+  store %"github.com/goplus/llgo/internal/runtime.iface" %60, ptr %62, align 8
+  %63 = getelementptr inbounds { %"github.com/goplus/llgo/internal/runtime.iface", i1 }, ptr %61, i32 0, i32 1
+  store i1 true, ptr %63, align 1
+  %64 = load { %"github.com/goplus/llgo/internal/runtime.iface", i1 }, ptr %61, align 8
+  br label %_llgo_8
+
+_llgo_7:                                          ; preds = %_llgo_2
+  %65 = alloca { %"github.com/goplus/llgo/internal/runtime.iface", i1 }, align 8
+  %66 = getelementptr inbounds { %"github.com/goplus/llgo/internal/runtime.iface", i1 }, ptr %65, i32 0, i32 0
+  store { ptr, ptr } zeroinitializer, ptr %66, align 8
+  %67 = getelementptr inbounds { %"github.com/goplus/llgo/internal/runtime.iface", i1 }, ptr %65, i32 0, i32 1
+  store i1 false, ptr %67, align 1
+  %68 = load { %"github.com/goplus/llgo/internal/runtime.iface", i1 }, ptr %65, align 8
+  br label %_llgo_8
+
+_llgo_8:                                          ; preds = %_llgo_7, %_llgo_6
+  %69 = phi { %"github.com/goplus/llgo/internal/runtime.iface", i1 } [ %64, %_llgo_6 ], [ %68, %_llgo_7 ]
+  %70 = extractvalue { %"github.com/goplus/llgo/internal/runtime.iface", i1 } %69, 0
+  %71 = extractvalue { %"github.com/goplus/llgo/internal/runtime.iface", i1 } %69, 1
+  %72 = alloca %"github.com/goplus/llgo/internal/runtime.String", align 8
+  %73 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %72, i32 0, i32 0
+  store ptr @16, ptr %73, align 8
+  %74 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %72, i32 0, i32 1
+  store i64 4, ptr %74, align 4
+  %75 = load %"github.com/goplus/llgo/internal/runtime.String", ptr %72, align 8
+  call void @"github.com/goplus/llgo/internal/runtime.PrintString"(%"github.com/goplus/llgo/internal/runtime.String" %75)
+  call void @"github.com/goplus/llgo/internal/runtime.PrintByte"(i8 32)
+  call void @"github.com/goplus/llgo/internal/runtime.PrintIface"(%"github.com/goplus/llgo/internal/runtime.iface" %70)
+  call void @"github.com/goplus/llgo/internal/runtime.PrintByte"(i8 32)
+  call void @"github.com/goplus/llgo/internal/runtime.PrintBool"(i1 %71)
+  call void @"github.com/goplus/llgo/internal/runtime.PrintByte"(i8 10)
+  ret i32 0
+}
+
+declare ptr @"github.com/goplus/llgo/internal/runtime.Zeroinit"(ptr, i64)
+
+declare void @"github.com/goplus/llgo/cl/internal/foo.(*Game).Load"(ptr)
+
+declare void @"github.com/goplus/llgo/cl/internal/foo.(*Game).initGame"(ptr)
+
+declare void @"github.com/goplus/llgo/cl/internal/foo.init"()
+
+declare void @"github.com/goplus/llgo/internal/runtime.init"()
+
+declare ptr @"github.com/goplus/llgo/internal/runtime.AllocZ"(i64)
+
+define void @"main.init$after"() {
+_llgo_0:
+  %0 = load ptr, ptr @_llgo_main.Game1, align 8
+  %1 = icmp eq ptr %0, null
+  br i1 %1, label %_llgo_1, label %_llgo_2
+
+_llgo_1:                                          ; preds = %_llgo_0
+  %2 = call ptr @"github.com/goplus/llgo/internal/runtime.NewNamed"(i64 2, i64 0, i64 0)
+  store ptr %2, ptr @_llgo_main.Game1, align 8
+  br label %_llgo_2
+
+_llgo_2:                                          ; preds = %_llgo_1, %_llgo_0
+  %3 = load ptr, ptr @_llgo_int, align 8
+  %4 = icmp eq ptr %3, null
+  br i1 %4, label %_llgo_3, label %_llgo_4
+
+_llgo_3:                                          ; preds = %_llgo_2
+  %5 = call ptr @"github.com/goplus/llgo/internal/runtime.Basic"(i64 2)
+  store ptr %5, ptr @_llgo_int, align 8
+  br label %_llgo_4
+
+_llgo_4:                                          ; preds = %_llgo_3, %_llgo_2
+  %6 = load ptr, ptr @_llgo_int, align 8
+  br i1 %1, label %_llgo_5, label %_llgo_6
+
+_llgo_5:                                          ; preds = %_llgo_4
+  %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 @0, ptr %8, align 8
+  %9 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %7, i32 0, i32 1
+  store i64 4, ptr %9, align 4
+  %10 = load %"github.com/goplus/llgo/internal/runtime.String", ptr %7, align 8
+  %11 = alloca %"github.com/goplus/llgo/internal/runtime.String", align 8
+  %12 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %11, i32 0, i32 0
+  store ptr @1, ptr %12, align 8
+  %13 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %11, i32 0, i32 1
+  store i64 10, ptr %13, align 4
+  %14 = load %"github.com/goplus/llgo/internal/runtime.String", ptr %11, align 8
+  call void @"github.com/goplus/llgo/internal/runtime.InitNamed"(ptr %2, %"github.com/goplus/llgo/internal/runtime.String" %10, %"github.com/goplus/llgo/internal/runtime.String" %14, ptr %6, { ptr, i64, i64 } zeroinitializer, { ptr, i64, i64 } zeroinitializer)
+  br label %_llgo_6
+
+_llgo_6:                                          ; preds = %_llgo_5, %_llgo_4
+  %15 = load ptr, ptr @_llgo_main.Game1, align 8
+  %16 = load ptr, ptr @"*_llgo_main.Game1", align 8
+  %17 = icmp eq ptr %16, null
+  br i1 %17, label %_llgo_7, label %_llgo_8
+
+_llgo_7:                                          ; preds = %_llgo_6
+  %18 = call ptr @"github.com/goplus/llgo/internal/runtime.PointerTo"(ptr %15)
+  store ptr %18, ptr @"*_llgo_main.Game1", align 8
+  br label %_llgo_8
+
+_llgo_8:                                          ; preds = %_llgo_7, %_llgo_6
+  %19 = load ptr, ptr @_llgo_main.Game2, align 8
+  %20 = icmp eq ptr %19, null
+  br i1 %20, label %_llgo_9, label %_llgo_10
+
+_llgo_9:                                          ; preds = %_llgo_8
+  %21 = call ptr @"github.com/goplus/llgo/internal/runtime.NewNamed"(i64 25, i64 0, i64 1)
+  store ptr %21, ptr @_llgo_main.Game2, align 8
+  br label %_llgo_10
+
+_llgo_10:                                         ; preds = %_llgo_9, %_llgo_8
+  %22 = load ptr, ptr @"_llgo_struct$n1H8J_3prDN3firMwPxBLVTkE5hJ9Di-AqNvaC9jczw", align 8
+  %23 = icmp eq ptr %22, null
+  br i1 %23, label %_llgo_11, label %_llgo_12
+
+_llgo_11:                                         ; preds = %_llgo_10
+  %24 = alloca %"github.com/goplus/llgo/internal/runtime.String", align 8
+  %25 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %24, i32 0, i32 0
+  store ptr @2, ptr %25, align 8
+  %26 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %24, i32 0, i32 1
+  store i64 4, ptr %26, align 4
+  %27 = load %"github.com/goplus/llgo/internal/runtime.String", ptr %24, align 8
+  %28 = call ptr @"github.com/goplus/llgo/internal/runtime.AllocU"(i64 0)
+  %29 = alloca %"github.com/goplus/llgo/internal/runtime.Slice", align 8
+  %30 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.Slice", ptr %29, i32 0, i32 0
+  store ptr %28, ptr %30, align 8
+  %31 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.Slice", ptr %29, i32 0, i32 1
+  store i64 0, ptr %31, align 4
+  %32 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.Slice", ptr %29, i32 0, i32 2
+  store i64 0, ptr %32, align 4
+  %33 = load %"github.com/goplus/llgo/internal/runtime.Slice", ptr %29, align 8
+  %34 = call ptr @"github.com/goplus/llgo/internal/runtime.Struct"(%"github.com/goplus/llgo/internal/runtime.String" %27, i64 0, %"github.com/goplus/llgo/internal/runtime.Slice" %33)
+  store ptr %34, ptr @"_llgo_struct$n1H8J_3prDN3firMwPxBLVTkE5hJ9Di-AqNvaC9jczw", align 8
+  br label %_llgo_12
+
+_llgo_12:                                         ; preds = %_llgo_11, %_llgo_10
+  %35 = load ptr, ptr @"_llgo_struct$n1H8J_3prDN3firMwPxBLVTkE5hJ9Di-AqNvaC9jczw", align 8
+  br i1 %20, label %_llgo_13, label %_llgo_14
+
+_llgo_13:                                         ; preds = %_llgo_12
+  %36 = alloca %"github.com/goplus/llgo/internal/runtime.String", align 8
+  %37 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %36, i32 0, i32 0
+  store ptr @3, ptr %37, align 8
+  %38 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %36, i32 0, i32 1
+  store i64 8, ptr %38, align 4
+  %39 = load %"github.com/goplus/llgo/internal/runtime.String", ptr %36, align 8
+  %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 @4, ptr %41, align 8
+  %42 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %40, i32 0, i32 1
+  store i64 13, ptr %42, align 4
+  %43 = load %"github.com/goplus/llgo/internal/runtime.String", ptr %40, align 8
+  %44 = load ptr, ptr @"_llgo_func$2_iS07vIlF2_rZqWB5eU0IvP_9HviM4MYZNkXZDvbac", align 8
+  %45 = icmp eq ptr %44, null
+  br i1 %45, label %_llgo_15, label %_llgo_16
+
+_llgo_14:                                         ; preds = %_llgo_16, %_llgo_12
+  %46 = load ptr, ptr @_llgo_main.Game2, align 8
+  %47 = load ptr, ptr @"*_llgo_main.Game2", align 8
+  %48 = icmp eq ptr %47, null
+  br i1 %48, label %_llgo_17, label %_llgo_18
+
+_llgo_15:                                         ; preds = %_llgo_13
+  %49 = call ptr @"github.com/goplus/llgo/internal/runtime.AllocU"(i64 0)
+  %50 = alloca %"github.com/goplus/llgo/internal/runtime.Slice", align 8
+  %51 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.Slice", ptr %50, i32 0, i32 0
+  store ptr %49, ptr %51, align 8
+  %52 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.Slice", ptr %50, i32 0, i32 1
+  store i64 0, ptr %52, align 4
+  %53 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.Slice", ptr %50, i32 0, i32 2
+  store i64 0, ptr %53, align 4
+  %54 = load %"github.com/goplus/llgo/internal/runtime.Slice", ptr %50, align 8
+  %55 = call ptr @"github.com/goplus/llgo/internal/runtime.AllocU"(i64 0)
+  %56 = alloca %"github.com/goplus/llgo/internal/runtime.Slice", align 8
+  %57 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.Slice", ptr %56, i32 0, i32 0
+  store ptr %55, ptr %57, align 8
+  %58 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.Slice", ptr %56, i32 0, i32 1
+  store i64 0, ptr %58, align 4
+  %59 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.Slice", ptr %56, i32 0, i32 2
+  store i64 0, ptr %59, align 4
+  %60 = load %"github.com/goplus/llgo/internal/runtime.Slice", ptr %56, align 8
+  %61 = call ptr @"github.com/goplus/llgo/internal/runtime.Func"(%"github.com/goplus/llgo/internal/runtime.Slice" %54, %"github.com/goplus/llgo/internal/runtime.Slice" %60, i1 false)
+  store ptr %61, ptr @"_llgo_func$2_iS07vIlF2_rZqWB5eU0IvP_9HviM4MYZNkXZDvbac", align 8
+  br label %_llgo_16
+
+_llgo_16:                                         ; preds = %_llgo_15, %_llgo_13
+  %62 = load ptr, ptr @"_llgo_func$2_iS07vIlF2_rZqWB5eU0IvP_9HviM4MYZNkXZDvbac", align 8
+  %63 = alloca %"github.com/goplus/llgo/internal/abi.Method", align 8
+  %64 = getelementptr inbounds %"github.com/goplus/llgo/internal/abi.Method", ptr %63, i32 0, i32 0
+  store %"github.com/goplus/llgo/internal/runtime.String" %43, ptr %64, align 8
+  %65 = getelementptr inbounds %"github.com/goplus/llgo/internal/abi.Method", ptr %63, i32 0, i32 1
+  store ptr %62, ptr %65, align 8
+  %66 = getelementptr inbounds %"github.com/goplus/llgo/internal/abi.Method", ptr %63, i32 0, i32 2
+  store ptr @"main.(*Game2).initGame", ptr %66, align 8
+  %67 = getelementptr inbounds %"github.com/goplus/llgo/internal/abi.Method", ptr %63, i32 0, i32 3
+  store ptr @"main.(*Game2).initGame", ptr %67, align 8
+  %68 = load %"github.com/goplus/llgo/internal/abi.Method", ptr %63, align 8
+  %69 = call ptr @"github.com/goplus/llgo/internal/runtime.AllocU"(i64 40)
+  %70 = getelementptr %"github.com/goplus/llgo/internal/abi.Method", ptr %69, i64 0
+  store %"github.com/goplus/llgo/internal/abi.Method" %68, ptr %70, align 8
+  %71 = alloca %"github.com/goplus/llgo/internal/runtime.Slice", align 8
+  %72 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.Slice", ptr %71, i32 0, i32 0
+  store ptr %69, ptr %72, align 8
+  %73 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.Slice", ptr %71, i32 0, i32 1
+  store i64 1, ptr %73, align 4
+  %74 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.Slice", ptr %71, i32 0, i32 2
+  store i64 1, ptr %74, align 4
+  %75 = load %"github.com/goplus/llgo/internal/runtime.Slice", ptr %71, align 8
+  %76 = alloca %"github.com/goplus/llgo/internal/runtime.String", align 8
+  %77 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %76, i32 0, i32 0
+  store ptr @5, ptr %77, align 8
+  %78 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %76, i32 0, i32 1
+  store i64 4, ptr %78, align 4
+  %79 = load %"github.com/goplus/llgo/internal/runtime.String", ptr %76, align 8
+  %80 = alloca %"github.com/goplus/llgo/internal/runtime.String", align 8
+  %81 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %80, i32 0, i32 0
+  store ptr @6, ptr %81, align 8
+  %82 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %80, i32 0, i32 1
+  store i64 10, ptr %82, align 4
+  %83 = load %"github.com/goplus/llgo/internal/runtime.String", ptr %80, align 8
+  call void @"github.com/goplus/llgo/internal/runtime.InitNamed"(ptr %21, %"github.com/goplus/llgo/internal/runtime.String" %79, %"github.com/goplus/llgo/internal/runtime.String" %83, ptr %35, { ptr, i64, i64 } zeroinitializer, %"github.com/goplus/llgo/internal/runtime.Slice" %75)
+  br label %_llgo_14
+
+_llgo_17:                                         ; preds = %_llgo_14
+  %84 = call ptr @"github.com/goplus/llgo/internal/runtime.PointerTo"(ptr %46)
+  store ptr %84, ptr @"*_llgo_main.Game2", align 8
+  br label %_llgo_18
+
+_llgo_18:                                         ; preds = %_llgo_17, %_llgo_14
+  %85 = load ptr, ptr @"_llgo_func$2_iS07vIlF2_rZqWB5eU0IvP_9HviM4MYZNkXZDvbac", align 8
+  %86 = load ptr, ptr @"_llgo_func$2_iS07vIlF2_rZqWB5eU0IvP_9HviM4MYZNkXZDvbac", align 8
+  %87 = load ptr, ptr @"_llgo_github.com/goplus/llgo/cl/internal/foo.Gamer", align 8
+  %88 = icmp eq ptr %87, null
+  br i1 %88, label %_llgo_19, label %_llgo_20
+
+_llgo_19:                                         ; preds = %_llgo_18
+  %89 = alloca %"github.com/goplus/llgo/internal/runtime.String", align 8
+  %90 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %89, i32 0, i32 0
+  store ptr @7, ptr %90, align 8
+  %91 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %89, i32 0, i32 1
+  store i64 4, ptr %91, align 4
+  %92 = load %"github.com/goplus/llgo/internal/runtime.String", ptr %89, align 8
+  %93 = alloca %"github.com/goplus/llgo/internal/abi.Imethod", align 8
+  %94 = getelementptr inbounds %"github.com/goplus/llgo/internal/abi.Imethod", ptr %93, i32 0, i32 0
+  store %"github.com/goplus/llgo/internal/runtime.String" %92, ptr %94, align 8
+  %95 = getelementptr inbounds %"github.com/goplus/llgo/internal/abi.Imethod", ptr %93, i32 0, i32 1
+  store ptr %85, ptr %95, align 8
+  %96 = load %"github.com/goplus/llgo/internal/abi.Imethod", ptr %93, align 8
+  %97 = alloca %"github.com/goplus/llgo/internal/runtime.String", align 8
+  %98 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %97, i32 0, i32 0
+  store ptr @8, ptr %98, align 8
+  %99 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %97, i32 0, i32 1
+  store i64 47, ptr %99, align 4
+  %100 = load %"github.com/goplus/llgo/internal/runtime.String", ptr %97, align 8
+  %101 = alloca %"github.com/goplus/llgo/internal/abi.Imethod", align 8
+  %102 = getelementptr inbounds %"github.com/goplus/llgo/internal/abi.Imethod", ptr %101, i32 0, i32 0
+  store %"github.com/goplus/llgo/internal/runtime.String" %100, ptr %102, align 8
+  %103 = getelementptr inbounds %"github.com/goplus/llgo/internal/abi.Imethod", ptr %101, i32 0, i32 1
+  store ptr %86, ptr %103, align 8
+  %104 = load %"github.com/goplus/llgo/internal/abi.Imethod", ptr %101, align 8
+  %105 = call ptr @"github.com/goplus/llgo/internal/runtime.AllocU"(i64 48)
+  %106 = getelementptr %"github.com/goplus/llgo/internal/abi.Imethod", ptr %105, i64 0
+  store %"github.com/goplus/llgo/internal/abi.Imethod" %96, ptr %106, align 8
+  %107 = getelementptr %"github.com/goplus/llgo/internal/abi.Imethod", ptr %105, i64 1
+  store %"github.com/goplus/llgo/internal/abi.Imethod" %104, ptr %107, align 8
+  %108 = alloca %"github.com/goplus/llgo/internal/runtime.Slice", align 8
+  %109 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.Slice", ptr %108, i32 0, i32 0
+  store ptr %105, ptr %109, align 8
+  %110 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.Slice", ptr %108, i32 0, i32 1
+  store i64 2, ptr %110, align 4
+  %111 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.Slice", ptr %108, i32 0, i32 2
+  store i64 2, ptr %111, align 4
+  %112 = load %"github.com/goplus/llgo/internal/runtime.Slice", ptr %108, align 8
+  %113 = alloca %"github.com/goplus/llgo/internal/runtime.String", align 8
+  %114 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %113, i32 0, i32 0
+  store ptr @9, ptr %114, align 8
+  %115 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %113, i32 0, i32 1
+  store i64 38, ptr %115, align 4
+  %116 = load %"github.com/goplus/llgo/internal/runtime.String", ptr %113, align 8
+  %117 = alloca %"github.com/goplus/llgo/internal/runtime.String", align 8
+  %118 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %117, i32 0, i32 0
+  store ptr @10, ptr %118, align 8
+  %119 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %117, i32 0, i32 1
+  store i64 44, ptr %119, align 4
+  %120 = load %"github.com/goplus/llgo/internal/runtime.String", ptr %117, align 8
+  %121 = call ptr @"github.com/goplus/llgo/internal/runtime.Interface"(%"github.com/goplus/llgo/internal/runtime.String" %116, %"github.com/goplus/llgo/internal/runtime.String" %120, %"github.com/goplus/llgo/internal/runtime.Slice" %112)
+  store ptr %121, ptr @"_llgo_github.com/goplus/llgo/cl/internal/foo.Gamer", align 8
+  br label %_llgo_20
+
+_llgo_20:                                         ; preds = %_llgo_19, %_llgo_18
+  %122 = load ptr, ptr @"_llgo_func$2_iS07vIlF2_rZqWB5eU0IvP_9HviM4MYZNkXZDvbac", align 8
+  %123 = load ptr, ptr @"_llgo_func$2_iS07vIlF2_rZqWB5eU0IvP_9HviM4MYZNkXZDvbac", align 8
+  %124 = alloca %"github.com/goplus/llgo/internal/runtime.String", align 8
+  %125 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %124, i32 0, i32 0
+  store ptr @11, ptr %125, align 8
+  %126 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %124, i32 0, i32 1
+  store i64 4, ptr %126, align 4
+  %127 = load %"github.com/goplus/llgo/internal/runtime.String", ptr %124, align 8
+  %128 = alloca %"github.com/goplus/llgo/internal/abi.Imethod", align 8
+  %129 = getelementptr inbounds %"github.com/goplus/llgo/internal/abi.Imethod", ptr %128, i32 0, i32 0
+  store %"github.com/goplus/llgo/internal/runtime.String" %127, ptr %129, align 8
+  %130 = getelementptr inbounds %"github.com/goplus/llgo/internal/abi.Imethod", ptr %128, i32 0, i32 1
+  store ptr %122, ptr %130, align 8
+  %131 = load %"github.com/goplus/llgo/internal/abi.Imethod", ptr %128, align 8
+  %132 = alloca %"github.com/goplus/llgo/internal/runtime.String", align 8
+  %133 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %132, i32 0, i32 0
+  store ptr @12, ptr %133, align 8
+  %134 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %132, i32 0, i32 1
+  store i64 47, ptr %134, align 4
+  %135 = load %"github.com/goplus/llgo/internal/runtime.String", ptr %132, align 8
+  %136 = alloca %"github.com/goplus/llgo/internal/abi.Imethod", align 8
+  %137 = getelementptr inbounds %"github.com/goplus/llgo/internal/abi.Imethod", ptr %136, i32 0, i32 0
+  store %"github.com/goplus/llgo/internal/runtime.String" %135, ptr %137, align 8
+  %138 = getelementptr inbounds %"github.com/goplus/llgo/internal/abi.Imethod", ptr %136, i32 0, i32 1
+  store ptr %123, ptr %138, align 8
+  %139 = load %"github.com/goplus/llgo/internal/abi.Imethod", ptr %136, align 8
+  %140 = call ptr @"github.com/goplus/llgo/internal/runtime.AllocU"(i64 48)
+  %141 = getelementptr %"github.com/goplus/llgo/internal/abi.Imethod", ptr %140, i64 0
+  store %"github.com/goplus/llgo/internal/abi.Imethod" %131, ptr %141, align 8
+  %142 = getelementptr %"github.com/goplus/llgo/internal/abi.Imethod", ptr %140, i64 1
+  store %"github.com/goplus/llgo/internal/abi.Imethod" %139, ptr %142, align 8
+  %143 = alloca %"github.com/goplus/llgo/internal/runtime.Slice", align 8
+  %144 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.Slice", ptr %143, i32 0, i32 0
+  store ptr %140, ptr %144, align 8
+  %145 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.Slice", ptr %143, i32 0, i32 1
+  store i64 2, ptr %145, align 4
+  %146 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.Slice", ptr %143, i32 0, i32 2
+  store i64 2, ptr %146, align 4
+  %147 = load %"github.com/goplus/llgo/internal/runtime.Slice", ptr %143, align 8
+  %148 = alloca %"github.com/goplus/llgo/internal/runtime.String", align 8
+  %149 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %148, i32 0, i32 0
+  store ptr @13, ptr %149, align 8
+  %150 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %148, i32 0, i32 1
+  store i64 4, ptr %150, align 4
+  %151 = load %"github.com/goplus/llgo/internal/runtime.String", ptr %148, align 8
+  %152 = alloca %"github.com/goplus/llgo/internal/runtime.String", align 8
+  %153 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %152, i32 0, i32 0
+  store ptr @14, ptr %153, align 8
+  %154 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %152, i32 0, i32 1
+  store i64 0, ptr %154, align 4
+  %155 = load %"github.com/goplus/llgo/internal/runtime.String", ptr %152, align 8
+  %156 = call ptr @"github.com/goplus/llgo/internal/runtime.Interface"(%"github.com/goplus/llgo/internal/runtime.String" %151, %"github.com/goplus/llgo/internal/runtime.String" %155, %"github.com/goplus/llgo/internal/runtime.Slice" %147)
+  store ptr %156, ptr @"main.iface$sO8a1LvuUsjXwiwaC6sR9-L4DiYgiOnZi7iosyShJXg", align 8
+  ret void
+}
+
+declare ptr @"github.com/goplus/llgo/internal/runtime.NewNamed"(i64, i64, i64)
+
+declare ptr @"github.com/goplus/llgo/internal/runtime.Basic"(i64)
+
+declare void @"github.com/goplus/llgo/internal/runtime.InitNamed"(ptr, %"github.com/goplus/llgo/internal/runtime.String", %"github.com/goplus/llgo/internal/runtime.String", ptr, %"github.com/goplus/llgo/internal/runtime.Slice", %"github.com/goplus/llgo/internal/runtime.Slice")
+
+declare ptr @"github.com/goplus/llgo/internal/runtime.PointerTo"(ptr)
+
+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)
+
+declare ptr @"github.com/goplus/llgo/internal/runtime.AllocU"(i64)
+
+declare ptr @"github.com/goplus/llgo/internal/runtime.Func"(%"github.com/goplus/llgo/internal/runtime.Slice", %"github.com/goplus/llgo/internal/runtime.Slice", i1)
+
+declare ptr @"github.com/goplus/llgo/internal/runtime.Interface"(%"github.com/goplus/llgo/internal/runtime.String", %"github.com/goplus/llgo/internal/runtime.String", %"github.com/goplus/llgo/internal/runtime.Slice")
+
+declare i1 @"github.com/goplus/llgo/internal/runtime.Implements"(ptr, ptr)
+
+declare ptr @"github.com/goplus/llgo/internal/runtime.NewItab"(ptr, ptr)
+
+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.PrintIface"(%"github.com/goplus/llgo/internal/runtime.iface")
+
+declare void @"github.com/goplus/llgo/internal/runtime.PrintBool"(i1)
+
+declare ptr @"github.com/goplus/llgo/internal/runtime.IfacePtrData"(%"github.com/goplus/llgo/internal/runtime.iface")
diff --git a/cl/_testgo/invoke/in.go b/cl/_testgo/invoke/in.go
index a6716183..d4f9e93a 100644
--- a/cl/_testgo/invoke/in.go
+++ b/cl/_testgo/invoke/in.go
@@ -53,7 +53,10 @@ func main() {
 	println(i, m)
 	m = &t
 	invoke(m)
-	// panic
+	var a any = T{"world"}
+	invoke(a.(I))
+	invoke(a.(interface{}).(interface{ Invoke() int }))
+	//panic
 	invoke(nil)
 }
 
diff --git a/cl/_testgo/invoke/out.ll b/cl/_testgo/invoke/out.ll
index 3397cae1..12c97a0c 100644
--- a/cl/_testgo/invoke/out.ll
+++ b/cl/_testgo/invoke/out.ll
@@ -5,6 +5,7 @@ source_filename = "main"
 %"github.com/goplus/llgo/internal/runtime.String" = type { ptr, i64 }
 %"github.com/goplus/llgo/internal/runtime.iface" = type { ptr, ptr }
 %"github.com/goplus/llgo/internal/abi.Type" = type { i64, i64, i32, i8, i8, i8, i8, { ptr, ptr }, ptr, %"github.com/goplus/llgo/internal/runtime.String", ptr }
+%"github.com/goplus/llgo/internal/runtime.eface" = type { ptr, 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 }
 %"github.com/goplus/llgo/internal/abi.Method" = type { %"github.com/goplus/llgo/internal/runtime.String", ptr, ptr, ptr }
@@ -58,6 +59,17 @@ source_filename = "main"
 @25 = private unnamed_addr constant [7 x i8] c"Method\00", align 1
 @26 = private unnamed_addr constant [5 x i8] c"main\00", align 1
 @27 = private unnamed_addr constant [1 x i8] zeroinitializer, align 1
+@28 = private unnamed_addr constant [6 x i8] c"world\00", align 1
+@_llgo_main.I = linkonce global ptr null
+@29 = private unnamed_addr constant [7 x i8] c"Invoke\00", align 1
+@30 = private unnamed_addr constant [5 x i8] c"main\00", align 1
+@31 = private unnamed_addr constant [7 x i8] c"main.I\00", align 1
+@32 = private unnamed_addr constant [22 x i8] c"type assertion failed\00", align 1
+@_llgo_any = linkonce global ptr null
+@33 = private unnamed_addr constant [5 x i8] c"main\00", align 1
+@34 = private unnamed_addr constant [1 x i8] zeroinitializer, align 1
+@35 = private unnamed_addr constant [22 x i8] c"type assertion failed\00", align 1
+@36 = private unnamed_addr constant [22 x i8] c"type assertion failed\00", align 1
 
 define i64 @main.T.Invoke(%main.T %0) {
 _llgo_0:
@@ -326,8 +338,129 @@ _llgo_0:
   store ptr %88, ptr %93, align 8
   %94 = load %"github.com/goplus/llgo/internal/runtime.iface", ptr %91, align 8
   call void @main.invoke(%"github.com/goplus/llgo/internal/runtime.iface" %94)
+  %95 = alloca %main.T, align 8
+  %96 = call ptr @"github.com/goplus/llgo/internal/runtime.Zeroinit"(ptr %95, i64 16)
+  %97 = getelementptr inbounds %main.T, ptr %96, i32 0, i32 0
+  %98 = alloca %"github.com/goplus/llgo/internal/runtime.String", align 8
+  %99 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %98, i32 0, i32 0
+  store ptr @28, ptr %99, align 8
+  %100 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %98, i32 0, i32 1
+  store i64 5, ptr %100, align 4
+  %101 = load %"github.com/goplus/llgo/internal/runtime.String", ptr %98, align 8
+  store %"github.com/goplus/llgo/internal/runtime.String" %101, ptr %97, align 8
+  %102 = load %main.T, ptr %96, align 8
+  %103 = load ptr, ptr @_llgo_main.T, align 8
+  %104 = call ptr @"github.com/goplus/llgo/internal/runtime.AllocU"(i64 16)
+  store %main.T %102, ptr %104, align 8
+  %105 = alloca %"github.com/goplus/llgo/internal/runtime.eface", align 8
+  %106 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.eface", ptr %105, i32 0, i32 0
+  store ptr %103, ptr %106, align 8
+  %107 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.eface", ptr %105, i32 0, i32 1
+  store ptr %104, ptr %107, align 8
+  %108 = load %"github.com/goplus/llgo/internal/runtime.eface", ptr %105, align 8
+  %109 = extractvalue %"github.com/goplus/llgo/internal/runtime.eface" %108, 0
+  %110 = load ptr, ptr @_llgo_main.I, align 8
+  %111 = call i1 @"github.com/goplus/llgo/internal/runtime.Implements"(ptr %110, ptr %109)
+  br i1 %111, label %_llgo_1, label %_llgo_2
+
+_llgo_1:                                          ; preds = %_llgo_0
+  %112 = extractvalue %"github.com/goplus/llgo/internal/runtime.eface" %108, 1
+  %113 = load ptr, ptr @"_llgo_iface$uRUteI7wmSy7y7ODhGzk0FdDaxGKMhVSSu6HZEv9aa0", align 8
+  %114 = call ptr @"github.com/goplus/llgo/internal/runtime.NewItab"(ptr %113, ptr %109)
+  %115 = alloca %"github.com/goplus/llgo/internal/runtime.iface", align 8
+  %116 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.iface", ptr %115, i32 0, i32 0
+  store ptr %114, ptr %116, align 8
+  %117 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.iface", ptr %115, i32 0, i32 1
+  store ptr %112, ptr %117, align 8
+  %118 = load %"github.com/goplus/llgo/internal/runtime.iface", ptr %115, align 8
+  call void @main.invoke(%"github.com/goplus/llgo/internal/runtime.iface" %118)
+  %119 = extractvalue %"github.com/goplus/llgo/internal/runtime.eface" %108, 0
+  %120 = load ptr, ptr @_llgo_any, align 8
+  br i1 true, label %_llgo_3, label %_llgo_4
+
+_llgo_2:                                          ; preds = %_llgo_0
+  %121 = alloca %"github.com/goplus/llgo/internal/runtime.String", align 8
+  %122 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %121, i32 0, i32 0
+  store ptr @32, ptr %122, align 8
+  %123 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %121, i32 0, i32 1
+  store i64 21, ptr %123, align 4
+  %124 = load %"github.com/goplus/llgo/internal/runtime.String", ptr %121, align 8
+  %125 = load ptr, ptr @_llgo_string, align 8
+  %126 = call ptr @"github.com/goplus/llgo/internal/runtime.AllocU"(i64 16)
+  store %"github.com/goplus/llgo/internal/runtime.String" %124, ptr %126, align 8
+  %127 = alloca %"github.com/goplus/llgo/internal/runtime.eface", align 8
+  %128 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.eface", ptr %127, i32 0, i32 0
+  store ptr %125, ptr %128, align 8
+  %129 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.eface", ptr %127, i32 0, i32 1
+  store ptr %126, ptr %129, align 8
+  %130 = load %"github.com/goplus/llgo/internal/runtime.eface", ptr %127, align 8
+  call void @"github.com/goplus/llgo/internal/runtime.TracePanic"(%"github.com/goplus/llgo/internal/runtime.eface" %130)
+  unreachable
+
+_llgo_3:                                          ; preds = %_llgo_1
+  %131 = extractvalue %"github.com/goplus/llgo/internal/runtime.eface" %108, 1
+  %132 = alloca %"github.com/goplus/llgo/internal/runtime.eface", align 8
+  %133 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.eface", ptr %132, i32 0, i32 0
+  store ptr %119, ptr %133, align 8
+  %134 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.eface", ptr %132, i32 0, i32 1
+  store ptr %131, ptr %134, align 8
+  %135 = load %"github.com/goplus/llgo/internal/runtime.eface", ptr %132, align 8
+  %136 = extractvalue %"github.com/goplus/llgo/internal/runtime.eface" %135, 0
+  %137 = load ptr, ptr @"_llgo_iface$uRUteI7wmSy7y7ODhGzk0FdDaxGKMhVSSu6HZEv9aa0", align 8
+  %138 = call i1 @"github.com/goplus/llgo/internal/runtime.Implements"(ptr %137, ptr %136)
+  br i1 %138, label %_llgo_5, label %_llgo_6
+
+_llgo_4:                                          ; preds = %_llgo_1
+  %139 = alloca %"github.com/goplus/llgo/internal/runtime.String", align 8
+  %140 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %139, i32 0, i32 0
+  store ptr @35, ptr %140, align 8
+  %141 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %139, i32 0, i32 1
+  store i64 21, ptr %141, align 4
+  %142 = load %"github.com/goplus/llgo/internal/runtime.String", ptr %139, align 8
+  %143 = load ptr, ptr @_llgo_string, align 8
+  %144 = call ptr @"github.com/goplus/llgo/internal/runtime.AllocU"(i64 16)
+  store %"github.com/goplus/llgo/internal/runtime.String" %142, ptr %144, align 8
+  %145 = alloca %"github.com/goplus/llgo/internal/runtime.eface", align 8
+  %146 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.eface", ptr %145, i32 0, i32 0
+  store ptr %143, ptr %146, align 8
+  %147 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.eface", ptr %145, i32 0, i32 1
+  store ptr %144, ptr %147, align 8
+  %148 = load %"github.com/goplus/llgo/internal/runtime.eface", ptr %145, align 8
+  call void @"github.com/goplus/llgo/internal/runtime.TracePanic"(%"github.com/goplus/llgo/internal/runtime.eface" %148)
+  unreachable
+
+_llgo_5:                                          ; preds = %_llgo_3
+  %149 = extractvalue %"github.com/goplus/llgo/internal/runtime.eface" %135, 1
+  %150 = load ptr, ptr @"_llgo_iface$uRUteI7wmSy7y7ODhGzk0FdDaxGKMhVSSu6HZEv9aa0", align 8
+  %151 = call ptr @"github.com/goplus/llgo/internal/runtime.NewItab"(ptr %150, ptr %136)
+  %152 = alloca %"github.com/goplus/llgo/internal/runtime.iface", align 8
+  %153 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.iface", ptr %152, i32 0, i32 0
+  store ptr %151, ptr %153, align 8
+  %154 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.iface", ptr %152, i32 0, i32 1
+  store ptr %149, ptr %154, align 8
+  %155 = load %"github.com/goplus/llgo/internal/runtime.iface", ptr %152, align 8
+  call void @main.invoke(%"github.com/goplus/llgo/internal/runtime.iface" %155)
   call void @main.invoke(%"github.com/goplus/llgo/internal/runtime.iface" zeroinitializer)
   ret i32 0
+
+_llgo_6:                                          ; preds = %_llgo_3
+  %156 = alloca %"github.com/goplus/llgo/internal/runtime.String", align 8
+  %157 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %156, i32 0, i32 0
+  store ptr @36, ptr %157, align 8
+  %158 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %156, i32 0, i32 1
+  store i64 21, ptr %158, align 4
+  %159 = load %"github.com/goplus/llgo/internal/runtime.String", ptr %156, align 8
+  %160 = load ptr, ptr @_llgo_string, align 8
+  %161 = call ptr @"github.com/goplus/llgo/internal/runtime.AllocU"(i64 16)
+  store %"github.com/goplus/llgo/internal/runtime.String" %159, ptr %161, align 8
+  %162 = alloca %"github.com/goplus/llgo/internal/runtime.eface", align 8
+  %163 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.eface", ptr %162, i32 0, i32 0
+  store ptr %160, ptr %163, align 8
+  %164 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.eface", ptr %162, i32 0, i32 1
+  store ptr %161, ptr %164, align 8
+  %165 = load %"github.com/goplus/llgo/internal/runtime.eface", ptr %162, align 8
+  call void @"github.com/goplus/llgo/internal/runtime.TracePanic"(%"github.com/goplus/llgo/internal/runtime.eface" %165)
+  unreachable
 }
 
 declare ptr @"github.com/goplus/llgo/internal/runtime.Zeroinit"(ptr, i64)
@@ -945,6 +1078,83 @@ _llgo_39:                                         ; preds = %_llgo_38
   br label %_llgo_40
 
 _llgo_40:                                         ; preds = %_llgo_39, %_llgo_38
+  %317 = load ptr, ptr @"_llgo_func$ETeB8WwW04JEq0ztcm-XPTJtuYvtpkjIsAc0-2NT9zA", align 8
+  %318 = load ptr, ptr @_llgo_main.I, align 8
+  %319 = icmp eq ptr %318, null
+  br i1 %319, label %_llgo_41, label %_llgo_42
+
+_llgo_41:                                         ; preds = %_llgo_40
+  %320 = alloca %"github.com/goplus/llgo/internal/runtime.String", align 8
+  %321 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %320, i32 0, i32 0
+  store ptr @29, ptr %321, align 8
+  %322 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %320, i32 0, i32 1
+  store i64 6, ptr %322, align 4
+  %323 = load %"github.com/goplus/llgo/internal/runtime.String", ptr %320, align 8
+  %324 = alloca %"github.com/goplus/llgo/internal/abi.Imethod", align 8
+  %325 = getelementptr inbounds %"github.com/goplus/llgo/internal/abi.Imethod", ptr %324, i32 0, i32 0
+  store %"github.com/goplus/llgo/internal/runtime.String" %323, ptr %325, align 8
+  %326 = getelementptr inbounds %"github.com/goplus/llgo/internal/abi.Imethod", ptr %324, i32 0, i32 1
+  store ptr %317, ptr %326, align 8
+  %327 = load %"github.com/goplus/llgo/internal/abi.Imethod", ptr %324, align 8
+  %328 = call ptr @"github.com/goplus/llgo/internal/runtime.AllocU"(i64 24)
+  %329 = getelementptr %"github.com/goplus/llgo/internal/abi.Imethod", ptr %328, i64 0
+  store %"github.com/goplus/llgo/internal/abi.Imethod" %327, ptr %329, align 8
+  %330 = alloca %"github.com/goplus/llgo/internal/runtime.Slice", align 8
+  %331 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.Slice", ptr %330, i32 0, i32 0
+  store ptr %328, ptr %331, align 8
+  %332 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.Slice", ptr %330, i32 0, i32 1
+  store i64 1, ptr %332, align 4
+  %333 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.Slice", ptr %330, i32 0, i32 2
+  store i64 1, ptr %333, align 4
+  %334 = load %"github.com/goplus/llgo/internal/runtime.Slice", ptr %330, align 8
+  %335 = alloca %"github.com/goplus/llgo/internal/runtime.String", align 8
+  %336 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %335, i32 0, i32 0
+  store ptr @30, ptr %336, align 8
+  %337 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %335, i32 0, i32 1
+  store i64 4, ptr %337, align 4
+  %338 = load %"github.com/goplus/llgo/internal/runtime.String", ptr %335, align 8
+  %339 = alloca %"github.com/goplus/llgo/internal/runtime.String", align 8
+  %340 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %339, i32 0, i32 0
+  store ptr @31, ptr %340, align 8
+  %341 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %339, i32 0, i32 1
+  store i64 6, ptr %341, align 4
+  %342 = load %"github.com/goplus/llgo/internal/runtime.String", ptr %339, align 8
+  %343 = call ptr @"github.com/goplus/llgo/internal/runtime.Interface"(%"github.com/goplus/llgo/internal/runtime.String" %338, %"github.com/goplus/llgo/internal/runtime.String" %342, %"github.com/goplus/llgo/internal/runtime.Slice" %334)
+  store ptr %343, ptr @_llgo_main.I, align 8
+  br label %_llgo_42
+
+_llgo_42:                                         ; preds = %_llgo_41, %_llgo_40
+  %344 = load ptr, ptr @_llgo_any, align 8
+  %345 = icmp eq ptr %344, null
+  br i1 %345, label %_llgo_43, label %_llgo_44
+
+_llgo_43:                                         ; preds = %_llgo_42
+  %346 = call ptr @"github.com/goplus/llgo/internal/runtime.AllocU"(i64 0)
+  %347 = alloca %"github.com/goplus/llgo/internal/runtime.Slice", align 8
+  %348 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.Slice", ptr %347, i32 0, i32 0
+  store ptr %346, ptr %348, align 8
+  %349 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.Slice", ptr %347, i32 0, i32 1
+  store i64 0, ptr %349, align 4
+  %350 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.Slice", ptr %347, i32 0, i32 2
+  store i64 0, ptr %350, align 4
+  %351 = load %"github.com/goplus/llgo/internal/runtime.Slice", ptr %347, align 8
+  %352 = alloca %"github.com/goplus/llgo/internal/runtime.String", align 8
+  %353 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %352, i32 0, i32 0
+  store ptr @33, ptr %353, align 8
+  %354 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %352, i32 0, i32 1
+  store i64 4, ptr %354, align 4
+  %355 = load %"github.com/goplus/llgo/internal/runtime.String", ptr %352, align 8
+  %356 = alloca %"github.com/goplus/llgo/internal/runtime.String", align 8
+  %357 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %356, i32 0, i32 0
+  store ptr @34, ptr %357, align 8
+  %358 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %356, i32 0, i32 1
+  store i64 0, ptr %358, align 4
+  %359 = load %"github.com/goplus/llgo/internal/runtime.String", ptr %356, align 8
+  %360 = call ptr @"github.com/goplus/llgo/internal/runtime.Interface"(%"github.com/goplus/llgo/internal/runtime.String" %355, %"github.com/goplus/llgo/internal/runtime.String" %359, %"github.com/goplus/llgo/internal/runtime.Slice" %351)
+  store ptr %360, ptr @_llgo_any, align 8
+  br label %_llgo_44
+
+_llgo_44:                                         ; preds = %_llgo_43, %_llgo_42
   ret void
 }
 
@@ -971,3 +1181,7 @@ declare ptr @"github.com/goplus/llgo/internal/runtime.PointerTo"(ptr)
 declare ptr @"github.com/goplus/llgo/internal/runtime.IfaceType"(%"github.com/goplus/llgo/internal/runtime.iface")
 
 declare void @"github.com/goplus/llgo/internal/runtime.PrintIface"(%"github.com/goplus/llgo/internal/runtime.iface")
+
+declare i1 @"github.com/goplus/llgo/internal/runtime.Implements"(ptr, ptr)
+
+declare void @"github.com/goplus/llgo/internal/runtime.TracePanic"(%"github.com/goplus/llgo/internal/runtime.eface")
diff --git a/cl/_testrt/any/out.ll b/cl/_testrt/any/out.ll
index ff63980b..b55c4afc 100644
--- a/cl/_testrt/any/out.ll
+++ b/cl/_testrt/any/out.ll
@@ -9,6 +9,7 @@ source_filename = "main"
 @"*_llgo_int8" = linkonce global ptr null
 @_llgo_int8 = linkonce global ptr null
 @0 = private unnamed_addr constant [22 x i8] c"type assertion failed\00", align 1
+@_llgo_string = linkonce global ptr null
 @_llgo_int = linkonce global ptr null
 @1 = private unnamed_addr constant [22 x i8] c"type assertion failed\00", align 1
 @__llgo_argc = global ptr null
@@ -34,7 +35,16 @@ _llgo_2:                                          ; preds = %_llgo_0
   %7 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %5, i32 0, i32 1
   store i64 21, ptr %7, align 4
   %8 = load %"github.com/goplus/llgo/internal/runtime.String", ptr %5, align 8
-  call void @"github.com/goplus/llgo/internal/runtime.TracePanic"(%"github.com/goplus/llgo/internal/runtime.String" %8)
+  %9 = load ptr, ptr @_llgo_string, align 8
+  %10 = call ptr @"github.com/goplus/llgo/internal/runtime.AllocU"(i64 16)
+  store %"github.com/goplus/llgo/internal/runtime.String" %8, ptr %10, align 8
+  %11 = alloca %"github.com/goplus/llgo/internal/runtime.eface", align 8
+  %12 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.eface", ptr %11, i32 0, i32 0
+  store ptr %9, ptr %12, align 8
+  %13 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.eface", ptr %11, i32 0, i32 1
+  store ptr %10, ptr %13, align 8
+  %14 = load %"github.com/goplus/llgo/internal/runtime.eface", ptr %11, align 8
+  call void @"github.com/goplus/llgo/internal/runtime.TracePanic"(%"github.com/goplus/llgo/internal/runtime.eface" %14)
   unreachable
 }
 
@@ -58,7 +68,16 @@ _llgo_2:                                          ; preds = %_llgo_0
   %9 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %7, i32 0, i32 1
   store i64 21, ptr %9, align 4
   %10 = load %"github.com/goplus/llgo/internal/runtime.String", ptr %7, align 8
-  call void @"github.com/goplus/llgo/internal/runtime.TracePanic"(%"github.com/goplus/llgo/internal/runtime.String" %10)
+  %11 = load ptr, ptr @_llgo_string, align 8
+  %12 = call ptr @"github.com/goplus/llgo/internal/runtime.AllocU"(i64 16)
+  store %"github.com/goplus/llgo/internal/runtime.String" %10, ptr %12, align 8
+  %13 = alloca %"github.com/goplus/llgo/internal/runtime.eface", align 8
+  %14 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.eface", ptr %13, i32 0, i32 0
+  store ptr %11, ptr %14, align 8
+  %15 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.eface", ptr %13, i32 0, i32 1
+  store ptr %12, ptr %15, align 8
+  %16 = load %"github.com/goplus/llgo/internal/runtime.eface", ptr %13, align 8
+  call void @"github.com/goplus/llgo/internal/runtime.TracePanic"(%"github.com/goplus/llgo/internal/runtime.eface" %16)
   unreachable
 }
 
@@ -129,16 +148,26 @@ _llgo_3:                                          ; preds = %_llgo_2
   br label %_llgo_4
 
 _llgo_4:                                          ; preds = %_llgo_3, %_llgo_2
-  %7 = load ptr, ptr @_llgo_int, align 8
+  %7 = load ptr, ptr @_llgo_string, align 8
   %8 = icmp eq ptr %7, null
   br i1 %8, label %_llgo_5, label %_llgo_6
 
 _llgo_5:                                          ; preds = %_llgo_4
-  %9 = call ptr @"github.com/goplus/llgo/internal/runtime.Basic"(i64 2)
-  store ptr %9, ptr @_llgo_int, align 8
+  %9 = call ptr @"github.com/goplus/llgo/internal/runtime.Basic"(i64 24)
+  store ptr %9, ptr @_llgo_string, align 8
   br label %_llgo_6
 
 _llgo_6:                                          ; preds = %_llgo_5, %_llgo_4
+  %10 = load ptr, ptr @_llgo_int, align 8
+  %11 = icmp eq ptr %10, null
+  br i1 %11, label %_llgo_7, label %_llgo_8
+
+_llgo_7:                                          ; preds = %_llgo_6
+  %12 = call ptr @"github.com/goplus/llgo/internal/runtime.Basic"(i64 2)
+  store ptr %12, ptr @_llgo_int, align 8
+  br label %_llgo_8
+
+_llgo_8:                                          ; preds = %_llgo_7, %_llgo_6
   ret void
 }
 
@@ -146,6 +175,8 @@ declare ptr @"github.com/goplus/llgo/internal/runtime.Basic"(i64)
 
 declare ptr @"github.com/goplus/llgo/internal/runtime.PointerTo"(ptr)
 
+declare ptr @"github.com/goplus/llgo/internal/runtime.AllocU"(i64)
+
 declare void @"github.com/goplus/llgo/internal/runtime.TracePanic"(%"github.com/goplus/llgo/internal/runtime.eface")
 
 declare void @"github.com/goplus/llgo/internal/runtime.init"()
diff --git a/cl/internal/foo/foo.go b/cl/internal/foo/foo.go
index 0c4e7d33..c3a4cd4e 100644
--- a/cl/internal/foo/foo.go
+++ b/cl/internal/foo/foo.go
@@ -16,3 +16,18 @@ type Foo struct {
 func (v Foo) Pb() *byte {
 	return v.pb
 }
+
+type Gamer interface {
+	initGame()
+	Load()
+}
+
+type Game struct {
+}
+
+func (g *Game) initGame() {
+}
+
+func (g *Game) Load() {
+	println("load")
+}
diff --git a/internal/abi/llgo_autogen.lla b/internal/abi/llgo_autogen.lla
index 55b79262..17d02dd3 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 2c866238..c3f0f9ed 100644
--- a/internal/abi/type.go
+++ b/internal/abi/type.go
@@ -246,7 +246,19 @@ type Method struct {
 
 // Exported reports whether the method is exported.
 func (p *Method) Exported() bool {
-	return IsExported(p.Name_)
+	return lastDot(p.Name_) == -1
+}
+
+// Name returns the tag string for method.
+func (p *Method) Name() string {
+	_, name := splitName(p.Name_)
+	return name
+}
+
+// PkgPath returns the pkgpath string for method, or empty if there is none.
+func (p *Method) PkgPath() string {
+	pkg, _ := splitName(p.Name_)
+	return pkg
 }
 
 // UncommonType is present only for defined types or types with methods
@@ -280,6 +292,23 @@ type Imethod struct {
 	Typ_  *FuncType // .(*FuncType) underneath
 }
 
+// Exported reports whether the imethod is exported.
+func (p *Imethod) Exported() bool {
+	return lastDot(p.Name_) == -1
+}
+
+// Name returns the tag string for imethod.
+func (p *Imethod) Name() string {
+	_, name := splitName(p.Name_)
+	return name
+}
+
+// PkgPath returns the pkgpath string for imethod, or empty if there is none.
+func (p *Imethod) PkgPath() string {
+	pkg, _ := splitName(p.Name_)
+	return pkg
+}
+
 func (t *Type) Kind() Kind { return Kind(t.Kind_ & KindMask) }
 
 // Size returns the size of data with type t.
@@ -450,4 +479,20 @@ func addChecked(p unsafe.Pointer, x uintptr, whySafe string) unsafe.Pointer {
 	return unsafe.Pointer(uintptr(p) + x)
 }
 
+func splitName(s string) (pkg string, name string) {
+	i := lastDot(s)
+	if i == -1 {
+		return s, ""
+	}
+	return s[:i], s[i+1:]
+}
+
+func lastDot(s string) int {
+	i := len(s) - 1
+	for i >= 0 && s[i] != '.' {
+		i--
+	}
+	return i
+}
+
 // -----------------------------------------------------------------------------
diff --git a/internal/runtime/llgo_autogen.lla b/internal/runtime/llgo_autogen.lla
index f66c4e86..4cb3ec4a 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 ca546843..ea464e91 100644
--- a/internal/runtime/z_face.go
+++ b/internal/runtime/z_face.go
@@ -266,4 +266,60 @@ func IfacePtrData(i iface) unsafe.Pointer {
 	return i.data
 }
 
+// Implements reports whether the type V implements the interface type T.
+func Implements(T, V *abi.Type) bool {
+	if T.Kind() != abi.Interface {
+		return false
+	}
+	t := (*abi.InterfaceType)(unsafe.Pointer(T))
+
+	if len(t.Methods) == 0 {
+		return true
+	}
+
+	// The same algorithm applies in both cases, but the
+	// method tables for an interface type and a concrete type
+	// are different, so the code is duplicated.
+	// In both cases the algorithm is a linear scan over the two
+	// lists - T's methods and V's methods - simultaneously.
+	// Since method tables are stored in a unique sorted order
+	// (alphabetical, with no duplicate method names), the scan
+	// through V's methods must hit a match for each of T's
+	// methods along the way, or else V does not implement T.
+	// This lets us run the scan in overall linear time instead of
+	// the quadratic time  a naive search would require.
+	// See also ../runtime/iface.go.
+	if V.Kind() == abi.Interface {
+		v := (*abi.InterfaceType)(unsafe.Pointer(V))
+		i := 0
+		for j := 0; j < len(v.Methods); j++ {
+			tm := &t.Methods[i]
+			vm := &v.Methods[j]
+			if vm.Name_ == tm.Name_ && vm.Typ_ == tm.Typ_ {
+				if i++; i >= len(t.Methods) {
+					return true
+				}
+			}
+		}
+		return false
+	}
+
+	v := V.Uncommon()
+	if v == nil {
+		return false
+	}
+	i := 0
+	vmethods := v.Methods()
+	for j := 0; j < int(v.Mcount); j++ {
+		tm := &t.Methods[i]
+		vm := vmethods[j]
+		if vm.Name_ == tm.Name_ && vm.Mtyp_ == tm.Typ_ {
+			if i++; i >= len(t.Methods) {
+				return true
+			}
+		}
+	}
+	return false
+}
+
 // -----------------------------------------------------------------------------
diff --git a/ssa/abitype.go b/ssa/abitype.go
index 309f58da..e41fda58 100644
--- a/ssa/abitype.go
+++ b/ssa/abitype.go
@@ -22,6 +22,7 @@ import (
 
 	"github.com/goplus/llgo/ssa/abi"
 	"github.com/goplus/llvm"
+	"golang.org/x/tools/go/types/typeutil"
 )
 
 // -----------------------------------------------------------------------------
@@ -54,9 +55,13 @@ func (b Builder) abiTypeOf(t types.Type) func() Expr {
 	case *types.Struct:
 		return b.abiStructOf(t)
 	case *types.Named:
+		if iface, ok := t.Underlying().(*types.Interface); ok {
+			obj := t.Obj()
+			return b.abiInterfaceOf(abi.PathOf(obj.Pkg()), abi.TypeName(obj), iface)
+		}
 		return b.abiNamedOf(t)
 	case *types.Interface:
-		return b.abiInterfaceOf("", t)
+		return b.abiInterfaceOf("", "", t)
 	case *types.Signature:
 		return b.abiFuncOf(t)
 	case *types.Slice:
@@ -100,15 +105,14 @@ func (b Builder) abiImethodOf(mName string, typ Expr) Expr {
 	return b.aggregateValue(prog.rtType("Imethod"), name.impl, typ.impl)
 }
 
-func (b Builder) abiMethods(t *types.Named) (ret int) {
-	n := t.NumMethods()
-	for i := 0; i < n; i++ {
-		m := t.Method(i)
-		mSig := m.Type().(*types.Signature)
-		recvType := mSig.Recv().Type()
-		if _, ok := recvType.(*types.Pointer); !ok {
-			ret++
+func (b Builder) abiMethods(t *types.Named) (ret, pret int) {
+	methods := typeutil.IntuitiveMethodSet(t, nil)
+	pret = len(methods)
+	for _, m := range methods {
+		if _, ok := m.Recv().(*types.Pointer); ok {
+			continue
 		}
+		ret++
 	}
 	return
 }
@@ -120,6 +124,9 @@ func (b Builder) abiMethodOf(m *types.Func /*, bg Background = InGo */) (mthd, p
 	mSig := m.Type().(*types.Signature)
 
 	name := b.Str(mName).impl
+	if !token.IsExported(mName) {
+		name = b.Str(abi.FullName(mPkg, m.Name())).impl
+	}
 	abiSigGo := types.NewSignatureType(nil, nil, nil, mSig.Params(), mSig.Results(), mSig.Variadic())
 	abiSig := prog.FuncDecl(abiSigGo, InGo).raw.Type
 	abiTyp := b.abiType(abiSig)
@@ -149,7 +156,7 @@ func (b Builder) abiMthd(mPkg *types.Package, mName string, mSig *types.Signatur
 }
 
 // func Interface(pkgPath, name string, methods []abi.Imethod)
-func (b Builder) abiInterfaceOf(name string, t *types.Interface) func() Expr {
+func (b Builder) abiInterfaceOf(pkgPath string, name string, t *types.Interface) func() Expr {
 	n := t.NumMethods()
 	typs := make([]Expr, n)
 	for i := 0; i < n; i++ {
@@ -161,11 +168,17 @@ func (b Builder) abiInterfaceOf(name string, t *types.Interface) func() Expr {
 		methods := make([]Expr, n)
 		for i := 0; i < n; i++ {
 			m := t.Method(i)
-			methods[i] = b.abiImethodOf(m.Name(), typs[i])
+			mName := m.Name()
+			if !token.IsExported(mName) {
+				mName = abi.FullName(m.Pkg(), mName)
+			}
+			methods[i] = b.abiImethodOf(mName, typs[i])
 		}
 		pkg := b.Pkg
 		fn := pkg.rtFunc("Interface")
-		pkgPath := pkg.Path()
+		if pkgPath == "" {
+			pkgPath = pkg.Path()
+		}
 		tSlice := lastParamType(prog, fn)
 		methodSlice := b.SliceLit(tSlice, methods...)
 		return b.Call(fn, b.Str(pkgPath), b.Str(name), methodSlice)
@@ -178,8 +191,7 @@ func (b Builder) abiNamedOf(t *types.Named) func() Expr {
 		pkg := b.Pkg
 		tunder := t.Underlying()
 		kind := int(abi.UnderlyingKind(tunder))
-		numMethods := b.abiMethods(t)
-		numPtrMethods := t.NumMethods()
+		numMethods, numPtrMethods := b.abiMethods(t)
 		newNamed := pkg.rtFunc("NewNamed")
 		return b.Call(newNamed, b.Prog.Val(kind), b.Prog.Val(numMethods), b.Prog.Val(numPtrMethods))
 	}
@@ -193,10 +205,10 @@ func (b Builder) abiInitNamed(ret Expr, t *types.Named) func() Expr {
 		prog := b.Prog
 		path := abi.PathOf(t.Obj().Pkg())
 		name := NameOf(t)
-
 		var initNamed = pkg.rtFunc("InitNamed")
 		var tSlice = lastParamType(prog, initNamed)
-		var n = t.NumMethods()
+		mset := typeutil.IntuitiveMethodSet(t, nil)
+		n := len(mset)
 		var methods, ptrMethods Expr
 		if n == 0 {
 			methods = prog.Zero(tSlice)
@@ -205,7 +217,7 @@ func (b Builder) abiInitNamed(ret Expr, t *types.Named) func() Expr {
 			var mthds []Expr
 			var ptrMthds = make([]Expr, 0, n)
 			for i := 0; i < n; i++ {
-				m := t.Method(i)
+				m := mset[i].Obj().(*types.Func)
 				mthd, ptrMthd := b.abiMethodOf(m)
 				if !mthd.IsNil() {
 					mthds = append(mthds, mthd)
@@ -304,6 +316,10 @@ func (p Package) abiTypeInit(g Global, t types.Type, pub bool) {
 		b.blk.last = blks[1].last
 	}
 	if t, ok := t.(*types.Named); ok {
+		// skip interface
+		if _, ok := t.Underlying().(*types.Interface); ok {
+			return
+		}
 		tabi = b.abiInitNamed(vexpr, t)
 		if pub {
 			blks = b.Func.MakeBlocks(2)
diff --git a/ssa/expr.go b/ssa/expr.go
index c085054d..960f1cde 100644
--- a/ssa/expr.go
+++ b/ssa/expr.go
@@ -113,7 +113,6 @@ func (p Program) Zero(t Type) Expr {
 		ret = llvm.ConstStruct(flds, false)
 	case *types.Slice:
 		ret = p.Zero(p.rtType("Slice")).impl
-	/* TODO(xsw):
 	case *types.Interface:
 		var name string
 		if u.Empty() {
@@ -122,7 +121,6 @@ func (p Program) Zero(t Type) Expr {
 			name = "Iface"
 		}
 		ret = p.Zero(p.rtType(name)).impl
-	*/
 	default:
 		log.Panicln("todo:", u)
 	}
diff --git a/ssa/interface.go b/ssa/interface.go
index 39da9775..67d1ca34 100644
--- a/ssa/interface.go
+++ b/ssa/interface.go
@@ -234,7 +234,21 @@ func (b Builder) TypeAssert(x Expr, assertedTyp Type, commaOk bool) Expr {
 	}
 	tx := b.faceAbiType(x)
 	tabi := b.abiType(assertedTyp.raw.Type)
-	eq := b.BinOp(token.EQL, tx, tabi)
+
+	var eq Expr
+	var val func() Expr
+	if rawIntf, ok := assertedTyp.raw.Type.Underlying().(*types.Interface); ok {
+		if rawIntf.Empty() {
+			eq = b.Prog.BoolVal(true)
+		} else {
+			eq = b.InlineCall(b.Pkg.rtFunc("Implements"), tabi, tx)
+		}
+		val = func() Expr { return Expr{b.unsafeInterface(rawIntf, tx, b.faceData(x.impl)), assertedTyp} }
+	} else {
+		eq = b.BinOp(token.EQL, tx, tabi)
+		val = func() Expr { return b.valFromData(assertedTyp, b.faceData(x.impl)) }
+	}
+
 	if commaOk {
 		prog := b.Prog
 		t := prog.Struct(assertedTyp, prog.Bool())
@@ -246,8 +260,7 @@ func (b Builder) TypeAssert(x Expr, assertedTyp Type, commaOk bool) Expr {
 		phi.AddIncoming(b, blks[:2], func(i int, blk BasicBlock) Expr {
 			b.SetBlockEx(blk, AtEnd, false)
 			if i == 0 {
-				val := b.valFromData(assertedTyp, b.faceData(x.impl))
-				valTrue := aggregateValue(b.impl, t.ll, val.impl, prog.BoolVal(true).impl)
+				valTrue := aggregateValue(b.impl, t.ll, val().impl, prog.BoolVal(true).impl)
 				b.Jump(blks[2])
 				return Expr{valTrue, t}
 			}
@@ -263,10 +276,10 @@ func (b Builder) TypeAssert(x Expr, assertedTyp Type, commaOk bool) Expr {
 	blks := b.Func.MakeBlocks(2)
 	b.If(eq, blks[0], blks[1])
 	b.SetBlockEx(blks[1], AtEnd, false)
-	b.Panic(b.Str("type assertion failed"))
+	b.Panic(b.MakeInterface(b.Prog.Any(), b.Str("type assertion failed")))
 	b.SetBlockEx(blks[0], AtEnd, false)
 	b.blk.last = blks[0].last
-	return b.valFromData(assertedTyp, b.faceData(x.impl))
+	return val()
 }
 
 // ChangeInterface constructs a value of one interface type from a