| ; RUN: opt -S -passes=wholeprogramdevirt -whole-program-visibility %s | FileCheck %s |
| |
| ; Test that we correctly expand the llvm.type.checked.load intrinsic in cases |
| ; where we cannot devirtualize. |
| |
| target datalayout = "e-p:64:64" |
| target triple = "x86_64-unknown-linux-gnu" |
| |
| @vt1 = constant [1 x ptr] [ptr @vf1], !type !0 |
| @vt2 = constant [1 x ptr] [ptr @vf2], !type !0 |
| |
| define void @vf1(ptr %this) { |
| ret void |
| } |
| |
| define void @vf2(ptr %this) { |
| ret void |
| } |
| |
| ; CHECK: define void @call |
| define void @call(ptr %obj) { |
| %vtable = load ptr, ptr %obj |
| %pair = call {ptr, i1} @llvm.type.checked.load(ptr %vtable, i32 0, metadata !"typeid") |
| %p = extractvalue {ptr, i1} %pair, 1 |
| ; CHECK: [[TT:%[^ ]*]] = call i1 @llvm.type.test(ptr [[VT:%[^,]*]], metadata !"typeid") |
| ; CHECK: br i1 [[TT]], |
| br i1 %p, label %cont, label %trap |
| |
| cont: |
| ; CHECK: [[GEP:%[^ ]*]] = getelementptr i8, ptr [[VT]], i32 0 |
| ; CHECK: [[LOAD:%[^ ]*]] = load ptr, ptr [[GEP]] |
| ; CHECK: call void [[LOAD]] |
| %fptr = extractvalue {ptr, i1} %pair, 0 |
| call void %fptr(ptr %obj) |
| ret void |
| |
| trap: |
| call void @llvm.trap() |
| unreachable |
| } |
| |
| ; CHECK: define { ptr, i1 } @ret |
| define {ptr, i1} @ret(ptr %vtablei8) { |
| ; CHECK: [[GEP2:%[^ ]*]] = getelementptr i8, ptr [[VT2:%[^,]*]], i32 1 |
| ; CHECK: [[LOAD2:%[^ ]*]] = load ptr, ptr [[GEP2]] |
| ; CHECK: [[TT2:%[^ ]*]] = call i1 @llvm.type.test(ptr %vtablei8, metadata !"typeid") |
| ; CHECK: [[I1:%[^ ]*]] = insertvalue { ptr, i1 } poison, ptr [[LOAD2]], 0 |
| ; CHECK: [[I2:%[^ ]*]] = insertvalue { ptr, i1 } [[I1]], i1 [[TT2]], 1 |
| %pair = call {ptr, i1} @llvm.type.checked.load(ptr %vtablei8, i32 1, metadata !"typeid") |
| ; CHECK: ret { ptr, i1 } [[I2]] |
| ret {ptr, i1} %pair |
| } |
| |
| declare {ptr, i1} @llvm.type.checked.load(ptr, i32, metadata) |
| declare void @llvm.trap() |
| |
| !0 = !{i32 0, !"typeid"} |