1; RUN: opt -S -wholeprogramdevirt -whole-program-visibility %s | FileCheck %s
2
3target datalayout = "e-p:64:64"
4target triple = "x86_64-unknown-linux-gnu"
5
6@vt1 = constant [1 x i8*] [i8* bitcast (i1 (i8*)* @vf0 to i8*)], !type !0
7@vt2 = constant [1 x i8*] [i8* bitcast (i1 (i8*)* @vf0 to i8*)], !type !0, !type !1
8@vt3 = constant [1 x i8*] [i8* bitcast (i1 (i8*)* @vf1 to i8*)], !type !0, !type !1
9@vt4 = constant [1 x i8*] [i8* bitcast (i1 (i8*)* @vf1 to i8*)], !type !1
10
11define i1 @vf0(i8* %this) readnone {
12  ret i1 0
13}
14
15define i1 @vf1(i8* %this) readnone {
16  ret i1 1
17}
18
19; CHECK: define i1 @call1
20define i1 @call1(i8* %obj) {
21  %vtableptr = bitcast i8* %obj to [1 x i8*]**
22  %vtable = load [1 x i8*]*, [1 x i8*]** %vtableptr
23  %vtablei8 = bitcast [1 x i8*]* %vtable to i8*
24  %p = call i1 @llvm.type.test(i8* %vtablei8, metadata !"typeid1")
25  call void @llvm.assume(i1 %p)
26  %fptrptr = getelementptr [1 x i8*], [1 x i8*]* %vtable, i32 0, i32 0
27  %fptr = load i8*, i8** %fptrptr
28  %fptr_casted = bitcast i8* %fptr to i1 (i8*)*
29  ; CHECK: [[RES1:%[^ ]*]] = icmp eq [1 x i8*]* %vtable, @vt3
30  %result = call i1 %fptr_casted(i8* %obj)
31  ; CHECK: ret i1 [[RES1]]
32  ret i1 %result
33}
34
35; CHECK: define i32 @call2
36define i32 @call2(i8* %obj) {
37  %vtableptr = bitcast i8* %obj to [1 x i8*]**
38  %vtable = load [1 x i8*]*, [1 x i8*]** %vtableptr
39  %vtablei8 = bitcast [1 x i8*]* %vtable to i8*
40  %p = call i1 @llvm.type.test(i8* %vtablei8, metadata !"typeid2")
41  call void @llvm.assume(i1 %p)
42  %fptrptr = getelementptr [1 x i8*], [1 x i8*]* %vtable, i32 0, i32 0
43  %fptr = load i8*, i8** %fptrptr
44  ; Intentional type mismatch to test zero extend.
45  %fptr_casted = bitcast i8* %fptr to i32 (i8*)*
46  ; CHECK: [[RES2:%[^ ]*]] = icmp ne [1 x i8*]* %vtable, @vt2
47  %result = call i32 %fptr_casted(i8* %obj)
48  ; CHECK: [[ZEXT2:%[^ ]*]] = zext i1 [[RES2]] to i32
49  ; CHECK: ret i32 [[ZEXT2:%[^ ]*]]
50  ret i32 %result
51}
52
53declare i1 @llvm.type.test(i8*, metadata)
54declare void @llvm.assume(i1)
55
56!0 = !{i32 0, !"typeid1"}
57!1 = !{i32 0, !"typeid2"}
58