| Ivan Krasin | 5474645 | 2016-07-12 02:38:37 +0000 | [diff] [blame] | 1 | ; RUN: opt -S -wholeprogramdevirt -pass-remarks=wholeprogramdevirt %s 2>&1 | FileCheck %s |
| 2 | |
| 3 | ; CHECK-NOT: devirtualized call |
| Peter Collingbourne | df49d1b | 2016-02-09 22:50:34 +0000 | [diff] [blame] | 4 | |
| 5 | target datalayout = "e-p:64:64" |
| 6 | target triple = "x86_64-unknown-linux-gnu" |
| 7 | |
| Peter Collingbourne | 7efd750 | 2016-06-24 21:21:32 +0000 | [diff] [blame] | 8 | @vt = global [1 x i8*] [i8* bitcast (void (i8*)* @vf to i8*)], !type !0 |
| Peter Collingbourne | df49d1b | 2016-02-09 22:50:34 +0000 | [diff] [blame] | 9 | |
| 10 | define void @vf(i8* %this) { |
| 11 | ret void |
| 12 | } |
| 13 | |
| 14 | ; CHECK: define void @call |
| 15 | define void @call(i8* %obj) { |
| 16 | %vtableptr = bitcast i8* %obj to [1 x i8*]** |
| 17 | %vtable = load [1 x i8*]*, [1 x i8*]** %vtableptr |
| 18 | %vtablei8 = bitcast [1 x i8*]* %vtable to i8* |
| Peter Collingbourne | 7efd750 | 2016-06-24 21:21:32 +0000 | [diff] [blame] | 19 | %p = call i1 @llvm.type.test(i8* %vtablei8, metadata !"typeid") |
| Peter Collingbourne | df49d1b | 2016-02-09 22:50:34 +0000 | [diff] [blame] | 20 | call void @llvm.assume(i1 %p) |
| 21 | %fptrptr = getelementptr [1 x i8*], [1 x i8*]* %vtable, i32 0, i32 0 |
| 22 | %fptr = load i8*, i8** %fptrptr |
| 23 | %fptr_casted = bitcast i8* %fptr to void (i8*)* |
| 24 | ; CHECK: call void % |
| 25 | call void %fptr_casted(i8* %obj) |
| 26 | ret void |
| 27 | } |
| 28 | |
| Peter Collingbourne | 7efd750 | 2016-06-24 21:21:32 +0000 | [diff] [blame] | 29 | declare i1 @llvm.type.test(i8*, metadata) |
| Peter Collingbourne | df49d1b | 2016-02-09 22:50:34 +0000 | [diff] [blame] | 30 | declare void @llvm.assume(i1) |
| 31 | |
| Peter Collingbourne | 7efd750 | 2016-06-24 21:21:32 +0000 | [diff] [blame] | 32 | !0 = !{i32 0, !"typeid"} |