xref: /llvm-project/llvm/test/Transforms/WholeProgramDevirt/non-constant-vtable.ll (revision 0ecf7965929c4477c8b9821c68e0ad66b012d8fe)
1; RUN: opt -S -passes=wholeprogramdevirt -whole-program-visibility -pass-remarks=wholeprogramdevirt %s 2>&1 | FileCheck %s
2
3; CHECK-NOT: devirtualized call
4
5target datalayout = "e-p:64:64"
6target triple = "x86_64-unknown-linux-gnu"
7
8@vt = global [1 x ptr] [ptr @vf], !type !0
9
10define void @vf(ptr %this) {
11  ret void
12}
13
14; CHECK: define void @call
15define void @call(ptr %obj) {
16  %vtable = load ptr, ptr %obj
17  %p = call i1 @llvm.type.test(ptr %vtable, metadata !"typeid")
18  call void @llvm.assume(i1 %p)
19  %fptr = load ptr, ptr %vtable
20  ; CHECK: call void %
21  call void %fptr(ptr %obj)
22  ret void
23}
24
25declare i1 @llvm.type.test(ptr, metadata)
26declare void @llvm.assume(i1)
27
28!0 = !{i32 0, !"typeid"}
29