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TheRock/compiler/amd-llvm/llvm/test/Transforms/WholeProgramDevirt/non-constant-vtable.ll
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29 lines
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LLVM

; RUN: opt -S -passes=wholeprogramdevirt -whole-program-visibility -pass-remarks=wholeprogramdevirt %s 2>&1 | FileCheck %s
; CHECK-NOT: devirtualized call
target datalayout = "e-p:64:64"
target triple = "x86_64-unknown-linux-gnu"
@vt = global [1 x ptr] [ptr @vf], !type !0
define void @vf(ptr %this) {
ret void
}
; CHECK: define void @call
define void @call(ptr %obj) {
%vtable = load ptr, ptr %obj
%p = call i1 @llvm.type.test(ptr %vtable, metadata !"typeid")
call void @llvm.assume(i1 %p)
%fptr = load ptr, ptr %vtable
; CHECK: call void %
call void %fptr(ptr %obj)
ret void
}
declare i1 @llvm.type.test(ptr, metadata)
declare void @llvm.assume(i1)
!0 = !{i32 0, !"typeid"}