| Eric Christopher | cee313d | 2019-04-17 04:52:47 +0000 | [diff] [blame] | 1 | ; RUN: opt -S -wholeprogramdevirt %s | FileCheck %s |
| 2 | |
| 3 | ; Test that we correctly expand the llvm.type.checked.load intrinsic in cases |
| 4 | ; where we cannot devirtualize. |
| 5 | |
| 6 | target datalayout = "e-p:64:64" |
| 7 | target triple = "x86_64-unknown-linux-gnu" |
| 8 | |
| 9 | @vt1 = constant [1 x i8*] [i8* bitcast (void (i8*)* @vf1 to i8*)], !type !0 |
| 10 | @vt2 = constant [1 x i8*] [i8* bitcast (void (i8*)* @vf2 to i8*)], !type !0 |
| 11 | |
| 12 | define void @vf1(i8* %this) { |
| 13 | ret void |
| 14 | } |
| 15 | |
| 16 | define void @vf2(i8* %this) { |
| 17 | ret void |
| 18 | } |
| 19 | |
| 20 | ; CHECK: define void @call |
| 21 | define void @call(i8* %obj) { |
| 22 | %vtableptr = bitcast i8* %obj to [1 x i8*]** |
| 23 | %vtable = load [1 x i8*]*, [1 x i8*]** %vtableptr |
| 24 | %vtablei8 = bitcast [1 x i8*]* %vtable to i8* |
| 25 | %pair = call {i8*, i1} @llvm.type.checked.load(i8* %vtablei8, i32 0, metadata !"typeid") |
| 26 | %p = extractvalue {i8*, i1} %pair, 1 |
| 27 | ; CHECK: [[TT:%[^ ]*]] = call i1 @llvm.type.test(i8* [[VT:%[^,]*]], metadata !"typeid") |
| 28 | ; CHECK: br i1 [[TT]], |
| 29 | br i1 %p, label %cont, label %trap |
| 30 | |
| 31 | cont: |
| 32 | ; CHECK: [[GEP:%[^ ]*]] = getelementptr i8, i8* [[VT]], i32 0 |
| 33 | ; CHECK: [[BC:%[^ ]*]] = bitcast i8* [[GEP]] to i8** |
| 34 | ; CHECK: [[LOAD:%[^ ]*]] = load i8*, i8** [[BC]] |
| 35 | ; CHECK: [[FPC:%[^ ]*]] = bitcast i8* [[LOAD]] to void (i8*)* |
| 36 | ; CHECK: call void [[FPC]] |
| 37 | %fptr = extractvalue {i8*, i1} %pair, 0 |
| 38 | %fptr_casted = bitcast i8* %fptr to void (i8*)* |
| 39 | call void %fptr_casted(i8* %obj) |
| 40 | ret void |
| 41 | |
| 42 | trap: |
| 43 | call void @llvm.trap() |
| 44 | unreachable |
| 45 | } |
| 46 | |
| 47 | ; CHECK: define { i8*, i1 } @ret |
| 48 | define {i8*, i1} @ret(i8* %vtablei8) { |
| 49 | ; CHECK: [[GEP2:%[^ ]*]] = getelementptr i8, i8* [[VT2:%[^,]*]], i32 1 |
| 50 | ; CHECK: [[BC2:%[^ ]*]] = bitcast i8* [[GEP2]] to i8** |
| 51 | ; CHECK: [[LOAD2:%[^ ]*]] = load i8*, i8** [[BC2]] |
| 52 | ; CHECK: [[TT2:%[^ ]*]] = call i1 @llvm.type.test(i8* [[VT2]], metadata !"typeid") |
| 53 | ; CHECK: [[I1:%[^ ]*]] = insertvalue { i8*, i1 } undef, i8* [[LOAD2]], 0 |
| 54 | ; CHECK: [[I2:%[^ ]*]] = insertvalue { i8*, i1 } %5, i1 [[TT2]], 1 |
| 55 | %pair = call {i8*, i1} @llvm.type.checked.load(i8* %vtablei8, i32 1, metadata !"typeid") |
| 56 | ; CHECK: ret { i8*, i1 } [[I2]] |
| 57 | ret {i8*, i1} %pair |
| 58 | } |
| 59 | |
| 60 | declare {i8*, i1} @llvm.type.checked.load(i8*, i32, metadata) |
| 61 | declare void @llvm.trap() |
| 62 | |
| 63 | !0 = !{i32 0, !"typeid"} |