1; RUN: opt -S -wholeprogramdevirt %s | FileCheck %s
2
3target datalayout = "e-p:64:64"
4target triple = "x86_64-unknown-linux-gnu"
5
6@vt = global [2 x i8*] [i8* zeroinitializer, i8* bitcast (void (i8*)* @vf to i8*)], !type !0
7
8define void @vf(i8* %this) {
9  ret void
10}
11
12; CHECK: define void @unaligned
13define void @unaligned(i8* %obj) {
14  %vtableptr = bitcast i8* %obj to [1 x i8*]**
15  %vtable = load [1 x i8*]*, [1 x i8*]** %vtableptr
16  %vtablei8 = bitcast [1 x i8*]* %vtable to i8*
17  %p = call i1 @llvm.type.test(i8* %vtablei8, metadata !"typeid")
18  call void @llvm.assume(i1 %p)
19  %fptrptr = getelementptr i8, i8* %vtablei8, i32 1
20  %fptrptr_casted = bitcast i8* %fptrptr to i8**
21  %fptr = load i8*, i8** %fptrptr_casted
22  %fptr_casted = bitcast i8* %fptr to void (i8*)*
23  ; CHECK: call void %
24  call void %fptr_casted(i8* %obj)
25  ret void
26}
27
28; CHECK: define void @outofbounds
29define void @outofbounds(i8* %obj) {
30  %vtableptr = bitcast i8* %obj to [1 x i8*]**
31  %vtable = load [1 x i8*]*, [1 x i8*]** %vtableptr
32  %vtablei8 = bitcast [1 x i8*]* %vtable to i8*
33  %p = call i1 @llvm.type.test(i8* %vtablei8, metadata !"typeid")
34  call void @llvm.assume(i1 %p)
35  %fptrptr = getelementptr i8, i8* %vtablei8, i32 16
36  %fptrptr_casted = bitcast i8* %fptrptr to i8**
37  %fptr = load i8*, i8** %fptrptr_casted
38  %fptr_casted = bitcast i8* %fptr to void (i8*)*
39  ; CHECK: call void %
40  call void %fptr_casted(i8* %obj)
41  ret void
42}
43
44; CHECK: define void @nonfunction
45define void @nonfunction(i8* %obj) {
46  %vtableptr = bitcast i8* %obj to [1 x i8*]**
47  %vtable = load [1 x i8*]*, [1 x i8*]** %vtableptr
48  %vtablei8 = bitcast [1 x i8*]* %vtable to i8*
49  %p = call i1 @llvm.type.test(i8* %vtablei8, metadata !"typeid")
50  call void @llvm.assume(i1 %p)
51  %fptrptr = getelementptr i8, i8* %vtablei8, i32 0
52  %fptrptr_casted = bitcast i8* %fptrptr to i8**
53  %fptr = load i8*, i8** %fptrptr_casted
54  %fptr_casted = bitcast i8* %fptr to void (i8*)*
55  ; CHECK: call void %
56  call void %fptr_casted(i8* %obj)
57  ret void
58}
59
60declare i1 @llvm.type.test(i8*, metadata)
61declare void @llvm.assume(i1)
62
63!0 = !{i32 0, !"typeid"}
64