38 lines
1.1 KiB
LLVM
38 lines
1.1 KiB
LLVM
; RUN: opt -S -wholeprogramdevirt -whole-program-visibility %s | FileCheck %s
|
|
|
|
target datalayout = "e-p:64:64"
|
|
target triple = "x86_64-unknown-linux-gnu"
|
|
|
|
@vt1 = constant [1 x i8*] [i8* bitcast (i32 (i8*)* @vf1 to i8*)], !type !0
|
|
@vt2 = constant [1 x i8*] [i8* bitcast (i32 (i8*)* @vf2 to i8*)], !type !0
|
|
|
|
define i32 @vf1(i8* %this) readnone {
|
|
%this_int = ptrtoint i8* %this to i32
|
|
ret i32 %this_int
|
|
}
|
|
|
|
define i32 @vf2(i8* %this) readnone {
|
|
%this_int = ptrtoint i8* %this to i32
|
|
ret i32 %this_int
|
|
}
|
|
|
|
; CHECK: define i32 @call
|
|
define i32 @call(i8* %obj) {
|
|
%vtableptr = bitcast i8* %obj to [1 x i8*]**
|
|
%vtable = load [1 x i8*]*, [1 x i8*]** %vtableptr
|
|
%vtablei8 = bitcast [1 x i8*]* %vtable to i8*
|
|
%p = call i1 @llvm.type.test(i8* %vtablei8, metadata !"typeid")
|
|
call void @llvm.assume(i1 %p)
|
|
%fptrptr = getelementptr [1 x i8*], [1 x i8*]* %vtable, i32 0, i32 0
|
|
%fptr = load i8*, i8** %fptrptr
|
|
%fptr_casted = bitcast i8* %fptr to i32 (i8*)*
|
|
; CHECK: call i32 %
|
|
%result = call i32 %fptr_casted(i8* %obj)
|
|
ret i32 %result
|
|
}
|
|
|
|
declare i1 @llvm.type.test(i8*, metadata)
|
|
declare void @llvm.assume(i1)
|
|
|
|
!0 = !{i32 0, !"typeid"}
|