64 lines
2.1 KiB
LLVM
64 lines
2.1 KiB
LLVM
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; RUN: opt -S -wholeprogramdevirt -whole-program-visibility %s | FileCheck %s
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; Test that we correctly expand the llvm.type.checked.load intrinsic in cases
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; where we cannot devirtualize.
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target datalayout = "e-p:64:64"
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target triple = "x86_64-unknown-linux-gnu"
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@vt1 = constant [1 x i8*] [i8* bitcast (void (i8*)* @vf1 to i8*)], !type !0
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@vt2 = constant [1 x i8*] [i8* bitcast (void (i8*)* @vf2 to i8*)], !type !0
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define void @vf1(i8* %this) {
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ret void
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}
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define void @vf2(i8* %this) {
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ret void
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}
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; CHECK: define void @call
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define void @call(i8* %obj) {
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%vtableptr = bitcast i8* %obj to [1 x i8*]**
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%vtable = load [1 x i8*]*, [1 x i8*]** %vtableptr
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%vtablei8 = bitcast [1 x i8*]* %vtable to i8*
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%pair = call {i8*, i1} @llvm.type.checked.load(i8* %vtablei8, i32 0, metadata !"typeid")
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%p = extractvalue {i8*, i1} %pair, 1
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; CHECK: [[TT:%[^ ]*]] = call i1 @llvm.type.test(i8* [[VT:%[^,]*]], metadata !"typeid")
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; CHECK: br i1 [[TT]],
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br i1 %p, label %cont, label %trap
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cont:
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; CHECK: [[GEP:%[^ ]*]] = getelementptr i8, i8* [[VT]], i32 0
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; CHECK: [[BC:%[^ ]*]] = bitcast i8* [[GEP]] to i8**
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; CHECK: [[LOAD:%[^ ]*]] = load i8*, i8** [[BC]]
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; CHECK: [[FPC:%[^ ]*]] = bitcast i8* [[LOAD]] to void (i8*)*
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; CHECK: call void [[FPC]]
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%fptr = extractvalue {i8*, i1} %pair, 0
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%fptr_casted = bitcast i8* %fptr to void (i8*)*
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call void %fptr_casted(i8* %obj)
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ret void
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trap:
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call void @llvm.trap()
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unreachable
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}
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; CHECK: define { i8*, i1 } @ret
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define {i8*, i1} @ret(i8* %vtablei8) {
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; CHECK: [[GEP2:%[^ ]*]] = getelementptr i8, i8* [[VT2:%[^,]*]], i32 1
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; CHECK: [[BC2:%[^ ]*]] = bitcast i8* [[GEP2]] to i8**
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; CHECK: [[LOAD2:%[^ ]*]] = load i8*, i8** [[BC2]]
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; CHECK: [[TT2:%[^ ]*]] = call i1 @llvm.type.test(i8* [[VT2]], metadata !"typeid")
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; CHECK: [[I1:%[^ ]*]] = insertvalue { i8*, i1 } undef, i8* [[LOAD2]], 0
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; CHECK: [[I2:%[^ ]*]] = insertvalue { i8*, i1 } %5, i1 [[TT2]], 1
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%pair = call {i8*, i1} @llvm.type.checked.load(i8* %vtablei8, i32 1, metadata !"typeid")
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; CHECK: ret { i8*, i1 } [[I2]]
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ret {i8*, i1} %pair
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}
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declare {i8*, i1} @llvm.type.checked.load(i8*, i32, metadata)
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declare void @llvm.trap()
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!0 = !{i32 0, !"typeid"}
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