xref: /aosp_15_r20/external/llvm/test/Transforms/WholeProgramDevirt/non-constant-vtable.ll (revision 9880d6810fe72a1726cb53787c6711e909410d58)
1*9880d681SAndroid Build Coastguard Worker; RUN: opt -S -wholeprogramdevirt -pass-remarks=wholeprogramdevirt %s 2>&1 | FileCheck %s
2*9880d681SAndroid Build Coastguard Worker
3*9880d681SAndroid Build Coastguard Worker; CHECK-NOT: devirtualized call
4*9880d681SAndroid Build Coastguard Worker
5*9880d681SAndroid Build Coastguard Workertarget datalayout = "e-p:64:64"
6*9880d681SAndroid Build Coastguard Workertarget triple = "x86_64-unknown-linux-gnu"
7*9880d681SAndroid Build Coastguard Worker
8*9880d681SAndroid Build Coastguard Worker@vt = global [1 x i8*] [i8* bitcast (void (i8*)* @vf to i8*)], !type !0
9*9880d681SAndroid Build Coastguard Worker
10*9880d681SAndroid Build Coastguard Workerdefine void @vf(i8* %this) {
11*9880d681SAndroid Build Coastguard Worker  ret void
12*9880d681SAndroid Build Coastguard Worker}
13*9880d681SAndroid Build Coastguard Worker
14*9880d681SAndroid Build Coastguard Worker; CHECK: define void @call
15*9880d681SAndroid Build Coastguard Workerdefine void @call(i8* %obj) {
16*9880d681SAndroid Build Coastguard Worker  %vtableptr = bitcast i8* %obj to [1 x i8*]**
17*9880d681SAndroid Build Coastguard Worker  %vtable = load [1 x i8*]*, [1 x i8*]** %vtableptr
18*9880d681SAndroid Build Coastguard Worker  %vtablei8 = bitcast [1 x i8*]* %vtable to i8*
19*9880d681SAndroid Build Coastguard Worker  %p = call i1 @llvm.type.test(i8* %vtablei8, metadata !"typeid")
20*9880d681SAndroid Build Coastguard Worker  call void @llvm.assume(i1 %p)
21*9880d681SAndroid Build Coastguard Worker  %fptrptr = getelementptr [1 x i8*], [1 x i8*]* %vtable, i32 0, i32 0
22*9880d681SAndroid Build Coastguard Worker  %fptr = load i8*, i8** %fptrptr
23*9880d681SAndroid Build Coastguard Worker  %fptr_casted = bitcast i8* %fptr to void (i8*)*
24*9880d681SAndroid Build Coastguard Worker  ; CHECK: call void %
25*9880d681SAndroid Build Coastguard Worker  call void %fptr_casted(i8* %obj)
26*9880d681SAndroid Build Coastguard Worker  ret void
27*9880d681SAndroid Build Coastguard Worker}
28*9880d681SAndroid Build Coastguard Worker
29*9880d681SAndroid Build Coastguard Workerdeclare i1 @llvm.type.test(i8*, metadata)
30*9880d681SAndroid Build Coastguard Workerdeclare void @llvm.assume(i1)
31*9880d681SAndroid Build Coastguard Worker
32*9880d681SAndroid Build Coastguard Worker!0 = !{i32 0, !"typeid"}
33