58 lines
1.8 KiB
LLVM
58 lines
1.8 KiB
LLVM
; RUN: opt -S -passes=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 ptr] [ptr @vf1], !type !0
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@vt2 = constant [1 x ptr] [ptr @vf2], !type !0
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define void @vf1(ptr %this) {
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ret void
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}
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define void @vf2(ptr %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(ptr %obj) {
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%vtable = load ptr, ptr %obj
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%pair = call {ptr, i1} @llvm.type.checked.load(ptr %vtable, i32 0, metadata !"typeid")
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%p = extractvalue {ptr, i1} %pair, 1
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; CHECK: [[TT:%[^ ]*]] = call i1 @llvm.type.test(ptr [[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, ptr [[VT]], i32 0
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; CHECK: [[LOAD:%[^ ]*]] = load ptr, ptr [[GEP]]
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; CHECK: call void [[LOAD]]
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%fptr = extractvalue {ptr, i1} %pair, 0
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call void %fptr(ptr %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 { ptr, i1 } @ret
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define {ptr, i1} @ret(ptr %vtablei8) {
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; CHECK: [[GEP2:%[^ ]*]] = getelementptr i8, ptr [[VT2:%[^,]*]], i32 1
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; CHECK: [[LOAD2:%[^ ]*]] = load ptr, ptr [[GEP2]]
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; CHECK: [[TT2:%[^ ]*]] = call i1 @llvm.type.test(ptr %vtablei8, metadata !"typeid")
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; CHECK: [[I1:%[^ ]*]] = insertvalue { ptr, i1 } poison, ptr [[LOAD2]], 0
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; CHECK: [[I2:%[^ ]*]] = insertvalue { ptr, i1 } [[I1]], i1 [[TT2]], 1
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%pair = call {ptr, i1} @llvm.type.checked.load(ptr %vtablei8, i32 1, metadata !"typeid")
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; CHECK: ret { ptr, i1 } [[I2]]
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ret {ptr, i1} %pair
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}
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declare {ptr, i1} @llvm.type.checked.load(ptr, i32, metadata)
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declare void @llvm.trap()
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!0 = !{i32 0, !"typeid"}
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