40 lines
1.0 KiB
LLVM
40 lines
1.0 KiB
LLVM
; RUN: opt -S -passes=wholeprogramdevirt -whole-program-visibility -pass-remarks=wholeprogramdevirt %s 2>&1 | FileCheck %s
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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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; CHECK: remark: <unknown>:0:0: single-impl: devirtualized a call to vf
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; CHECK: remark: <unknown>:0:0: devirtualized vf
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; CHECK-NOT: devirtualized
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@vt1 = constant [1 x ptr] [ptr @vf], !type !0
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@vt2 = constant [1 x ptr] [ptr @vf], !type !0
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define void @vf(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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%fptr = extractvalue {ptr, i1} %pair, 0
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%p = extractvalue {ptr, i1} %pair, 1
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; CHECK: br i1 true,
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br i1 %p, label %cont, label %trap
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cont:
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; CHECK: call void @vf(
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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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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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