derek.holloway
7502bf64a4
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53 lines
1.3 KiB
LLVM
53 lines
1.3 KiB
LLVM
; RUN: opt -S -passes=wholeprogramdevirt -whole-program-visibility %s | 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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%vtTy = type { ptr }
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@vt = constant %vtTy { 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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%p = call i1 @llvm.type.test(ptr %vtable, metadata !"typeid")
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call void @llvm.assume(i1 %p)
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%fptr = load ptr, ptr %vtable
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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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}
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; CHECK: define void @call_oob
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define void @call_oob(ptr %obj) {
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%vtable = load ptr, ptr %obj
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%p = call i1 @llvm.type.test(ptr %vtable, metadata !"typeid")
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call void @llvm.assume(i1 %p)
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%fptrptr = getelementptr [1 x ptr], ptr %vtable, i32 0, i32 4
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%fptr = load ptr, ptr %fptrptr
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; CHECK: call void %
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call void %fptr(ptr %obj)
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ret void
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}
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; CHECK: define void @call_unaligned
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define void @call_unaligned(ptr %obj) {
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%vtable = load ptr, ptr %obj
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%p = call i1 @llvm.type.test(ptr %vtable, metadata !"typeid")
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call void @llvm.assume(i1 %p)
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%fptrptr = getelementptr i8, ptr %vtable, i32 1
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%fptr = load ptr, ptr %fptrptr
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; CHECK: call void %
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call void %fptr(ptr %obj)
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ret void
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}
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declare i1 @llvm.type.test(ptr, metadata)
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declare void @llvm.assume(i1)
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!0 = !{i32 0, !"typeid"}
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