| 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 |
| Peter Collingbourne | 0312f61 | 2016-06-25 00:23:04 +0000 | [diff] [blame] | 2 | |
| 3 | target datalayout = "e-p:64:64" |
| 4 | target triple = "x86_64-unknown-linux-gnu" |
| 5 | |
| Ivan Krasin | f3403fd | 2016-08-11 19:09:02 +0000 | [diff] [blame] | 6 | ; CHECK: remark: <unknown>:0:0: single-impl: devirtualized a call to vf |
| 7 | ; CHECK: remark: <unknown>:0:0: devirtualized vf |
| 8 | ; CHECK-NOT: devirtualized |
| Ivan Krasin | 5474645 | 2016-07-12 02:38:37 +0000 | [diff] [blame] | 9 | |
| Peter Collingbourne | 0312f61 | 2016-06-25 00:23:04 +0000 | [diff] [blame] | 10 | @vt1 = constant [1 x i8*] [i8* bitcast (void (i8*)* @vf to i8*)], !type !0 |
| 11 | @vt2 = constant [1 x i8*] [i8* bitcast (void (i8*)* @vf to i8*)], !type !0 |
| 12 | |
| 13 | define void @vf(i8* %this) { |
| 14 | ret void |
| 15 | } |
| 16 | |
| 17 | ; CHECK: define void @call |
| 18 | define void @call(i8* %obj) { |
| 19 | %vtableptr = bitcast i8* %obj to [1 x i8*]** |
| 20 | %vtable = load [1 x i8*]*, [1 x i8*]** %vtableptr |
| 21 | %vtablei8 = bitcast [1 x i8*]* %vtable to i8* |
| 22 | %pair = call {i8*, i1} @llvm.type.checked.load(i8* %vtablei8, i32 0, metadata !"typeid") |
| 23 | %fptr = extractvalue {i8*, i1} %pair, 0 |
| 24 | %p = extractvalue {i8*, i1} %pair, 1 |
| 25 | ; CHECK: br i1 true, |
| 26 | br i1 %p, label %cont, label %trap |
| 27 | |
| 28 | cont: |
| 29 | %fptr_casted = bitcast i8* %fptr to void (i8*)* |
| 30 | ; CHECK: call void @vf( |
| 31 | call void %fptr_casted(i8* %obj) |
| 32 | ret void |
| 33 | |
| 34 | trap: |
| 35 | call void @llvm.trap() |
| 36 | unreachable |
| 37 | } |
| 38 | |
| 39 | declare {i8*, i1} @llvm.type.checked.load(i8*, i32, metadata) |
| 40 | declare void @llvm.trap() |
| 41 | |
| 42 | !0 = !{i32 0, !"typeid"} |