| ; RUN: opt -S -passes=wholeprogramdevirt -whole-program-visibility %s | FileCheck %s |
| |
| target datalayout = "e-p:64:64" |
| target triple = "x86_64-unknown-linux-gnu" |
| |
| %vtTy = type { void (i8*)* } |
| |
| @vt = constant %vtTy { void (i8*)* @vf }, !type !0 |
| |
| define void @vf(i8* %this) { |
| ret void |
| } |
| |
| ; CHECK: define void @call |
| define void @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 void (i8*)* |
| ; CHECK: call void @vf( |
| call void %fptr_casted(i8* %obj) |
| ret void |
| } |
| |
| ; CHECK: define void @call_oob |
| define void @call_oob(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 4 |
| %fptr = load i8*, i8** %fptrptr |
| %fptr_casted = bitcast i8* %fptr to void (i8*)* |
| ; CHECK: call void % |
| call void %fptr_casted(i8* %obj) |
| ret void |
| } |
| |
| ; CHECK: define void @call_unaligned |
| define void @call_unaligned(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 i8, i8* %vtablei8, i32 1 |
| %fptrptr_casted = bitcast i8* %fptrptr to i8** |
| %fptr = load i8*, i8** %fptrptr_casted |
| %fptr_casted = bitcast i8* %fptr to void (i8*)* |
| ; CHECK: call void % |
| call void %fptr_casted(i8* %obj) |
| ret void |
| } |
| |
| declare i1 @llvm.type.test(i8*, metadata) |
| declare void @llvm.assume(i1) |
| |
| !0 = !{i32 0, !"typeid"} |