| ; RUN: opt -S -wholeprogramdevirt %s | FileCheck %s |
| |
| target datalayout = "e-p:64:64" |
| target triple = "x86_64-unknown-linux-gnu" |
| |
| @vt1 = constant [1 x i8*] [i8* bitcast (i32 ()* @vf1 to i8*)], !type !0 |
| @vt2 = constant [1 x i8*] [i8* bitcast (i32 ()* @vf2 to i8*)], !type !0 |
| |
| define i32 @vf1() readnone { |
| ret i32 1 |
| } |
| |
| define i32 @vf2() readnone { |
| ret i32 2 |
| } |
| |
| ; 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 ()* |
| ; CHECK: call i32 % |
| %result = call i32 %fptr_casted() |
| ret i32 %result |
| } |
| |
| declare i1 @llvm.type.test(i8*, metadata) |
| declare void @llvm.assume(i1) |
| |
| !0 = !{i32 0, !"typeid"} |
