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 (void (i8*)* @vf to i8*)]
7@vt2 = constant [1 x i8*] [i8* bitcast (void (i8*)* @vf to i8*)]
8
9define void @vf(i8* %this) {
10  ret void
11}
12
13; CHECK: define void @call
14define void @call(i8* %obj) {
15  %vtableptr = bitcast i8* %obj to [1 x i8*]**
16  %vtable = load [1 x i8*]*, [1 x i8*]** %vtableptr
17  %vtablei8 = bitcast [1 x i8*]* %vtable to i8*
18  %p = call i1 @llvm.bitset.test(i8* %vtablei8, metadata !"bitset")
19  call void @llvm.assume(i1 %p)
20  %fptrptr = getelementptr [1 x i8*], [1 x i8*]* %vtable, i32 0, i32 0
21  %fptr = load i8*, i8** %fptrptr
22  %fptr_casted = bitcast i8* %fptr to void (i8*)*
23  ; CHECK: call void @vf(
24  call void %fptr_casted(i8* %obj)
25  ret void
26}
27
28declare i1 @llvm.bitset.test(i8*, metadata)
29declare void @llvm.assume(i1)
30
31!0 = !{!"bitset", [1 x i8*]* @vt1, i32 0}
32!1 = !{!"bitset", [1 x i8*]* @vt2, i32 0}
33!llvm.bitsets = !{!0, !1}
34