1; RUN: opt -S -passes=wholeprogramdevirt -whole-program-visibility %s | FileCheck %s
2
3target datalayout = "e-p:64:64"
4target triple = "x86_64-unknown-linux-gnu"
5
6%vtTy = type { void (i8*)* }
7
8@vt = constant %vtTy { void (i8*)* @vf }, !type !0
9
10define void @vf(i8* %this) {
11  ret void
12}
13
14; CHECK: define void @call
15define void @call(i8* %obj) {
16  %vtableptr = bitcast i8* %obj to [1 x i8*]**
17  %vtable = load [1 x i8*]*, [1 x i8*]** %vtableptr
18  %vtablei8 = bitcast [1 x i8*]* %vtable to i8*
19  %p = call i1 @llvm.type.test(i8* %vtablei8, metadata !"typeid")
20  call void @llvm.assume(i1 %p)
21  %fptrptr = getelementptr [1 x i8*], [1 x i8*]* %vtable, i32 0, i32 0
22  %fptr = load i8*, i8** %fptrptr
23  %fptr_casted = bitcast i8* %fptr to void (i8*)*
24  ; CHECK: call void @vf(
25  call void %fptr_casted(i8* %obj)
26  ret void
27}
28
29; CHECK: define void @call_oob
30define void @call_oob(i8* %obj) {
31  %vtableptr = bitcast i8* %obj to [1 x i8*]**
32  %vtable = load [1 x i8*]*, [1 x i8*]** %vtableptr
33  %vtablei8 = bitcast [1 x i8*]* %vtable to i8*
34  %p = call i1 @llvm.type.test(i8* %vtablei8, metadata !"typeid")
35  call void @llvm.assume(i1 %p)
36  %fptrptr = getelementptr [1 x i8*], [1 x i8*]* %vtable, i32 0, i32 4
37  %fptr = load i8*, i8** %fptrptr
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 @call_unaligned
45define void @call_unaligned(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 1
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