1; RUN: opt -S -wholeprogramdevirt %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  ; CHECK: {{.*}} = bitcast [1 x i8*]* {{.*}} to i8*
24  ; CHECK: [[VT1:%[^ ]*]] = bitcast [1 x i8*]* {{.*}} to i8*
25  %vtablei8 = bitcast [1 x i8*]* %vtable to i8*
26  %p = call i1 @llvm.type.test(i8* %vtablei8, metadata !"typeid1")
27  call void @llvm.assume(i1 %p)
28  %fptrptr = getelementptr [1 x i8*], [1 x i8*]* %vtable, i32 0, i32 0
29  %fptr = load i8*, i8** %fptrptr
30  %fptr_casted = bitcast i8* %fptr to i1 (i8*)*
31  ; CHECK: [[RES1:%[^ ]*]] = icmp eq i8* [[VT1]], bitcast ([1 x i8*]* @vt3 to i8*)
32  %result = call i1 %fptr_casted(i8* %obj)
33  ; CHECK: ret i1 [[RES1]]
34  ret i1 %result
35}
36
37; CHECK: define i32 @call2
38define i32 @call2(i8* %obj) {
39  %vtableptr = bitcast i8* %obj to [1 x i8*]**
40  %vtable = load [1 x i8*]*, [1 x i8*]** %vtableptr
41  ; CHECK: [[VT2:%[^ ]*]] = bitcast [1 x i8*]* {{.*}} to i8*
42  %vtablei8 = bitcast [1 x i8*]* %vtable to i8*
43  %p = call i1 @llvm.type.test(i8* %vtablei8, metadata !"typeid2")
44  call void @llvm.assume(i1 %p)
45  %fptrptr = getelementptr [1 x i8*], [1 x i8*]* %vtable, i32 0, i32 0
46  %fptr = load i8*, i8** %fptrptr
47  ; Intentional type mismatch to test zero extend.
48  %fptr_casted = bitcast i8* %fptr to i32 (i8*)*
49  ; CHECK: [[RES2:%[^ ]*]] = icmp ne i8* [[VT1]], bitcast ([1 x i8*]* @vt2 to i8*)
50  %result = call i32 %fptr_casted(i8* %obj)
51  ; CHECK: [[ZEXT2:%[^ ]*]] = zext i1 [[RES2]] to i32
52  ; CHECK: ret i32 [[ZEXT2:%[^ ]*]]
53  ret i32 %result
54}
55
56declare i1 @llvm.type.test(i8*, metadata)
57declare void @llvm.assume(i1)
58
59!0 = !{i32 0, !"typeid1"}
60!1 = !{i32 0, !"typeid2"}
61