| Peter Collingbourne | 17febdb | 2017-02-09 23:46:26 +0000 | [diff] [blame] | 1 | ; RUN: opt -S -wholeprogramdevirt %s | FileCheck %s |
| 2 | |
| 3 | target datalayout = "e-p:64:64" |
| 4 | target triple = "x86_64-unknown-linux-gnu" |
| 5 | |
| 6 | @vt1 = constant [1 x i8*] [i8* bitcast (i32 (i8*, i32)* @vf1 to i8*)], !type !0 |
| 7 | @vt2 = constant [1 x i8*] [i8* bitcast (i32 (i8*, i32)* @vf2 to i8*)], !type !0 |
| 8 | |
| 9 | declare i32 @vf1(i8* %this, i32 %arg) readnone |
| 10 | |
| 11 | define i32 @vf2(i8* %this, i32 %arg) readnone { |
| 12 | ret i32 %arg |
| 13 | } |
| 14 | |
| 15 | ; CHECK: define i32 @fn |
| 16 | define i32 @fn(i8* %obj) { |
| 17 | %vtableptr = bitcast i8* %obj to [1 x i8*]** |
| 18 | %vtable = load [1 x i8*]*, [1 x i8*]** %vtableptr |
| 19 | %vtablei8 = bitcast [1 x i8*]* %vtable to i8* |
| 20 | %p = call i1 @llvm.type.test(i8* %vtablei8, metadata !"typeid") |
| 21 | call void @llvm.assume(i1 %p) |
| 22 | %fptrptr = getelementptr [1 x i8*], [1 x i8*]* %vtable, i32 0, i32 0 |
| 23 | %fptr = load i8*, i8** %fptrptr |
| 24 | %fptr_casted = bitcast i8* %fptr to i32 (i8*, i32)* |
| 25 | ; CHECK: call i32 % |
| 26 | %result = call i32 %fptr_casted(i8* %obj, i32 1) |
| 27 | ret i32 %result |
| 28 | } |
| 29 | declare i1 @llvm.type.test(i8*, metadata) |
| 30 | declare void @llvm.assume(i1) |
| 31 | |
| 32 | !0 = !{i32 0, !"typeid"} |