| Eric Christopher | cee313d | 2019-04-17 04:52:47 +0000 | [diff] [blame] | 1 | ; RUN: opt -S -wholeprogramdevirt -pass-remarks=wholeprogramdevirt %s 2>&1 | FileCheck %s |
| 2 | |
| 3 | target datalayout = "e-p:64:64" |
| 4 | target triple = "x86_64-unknown-linux-gnu" |
| 5 | |
| 6 | ; CHECK: remark: devirt-single.cc:30:32: single-impl: devirtualized a call to vf |
| 7 | ; CHECK: remark: devirt-single.cc:13:0: devirtualized vf |
| 8 | ; CHECK-NOT: devirtualized |
| 9 | |
| 10 | @vt1 = constant [1 x i8*] [i8* bitcast (void (i8*)* @vf to i8*)], !type !8 |
| 11 | @vt2 = constant [1 x i8*] [i8* bitcast (void (i8*)* @vf to i8*)], !type !8 |
| 12 | |
| 13 | define void @vf(i8* %this) #0 !dbg !7 { |
| 14 | ret void |
| 15 | } |
| 16 | |
| 17 | ; CHECK: define void @call |
| 18 | define void @call(i8* %obj) #1 !dbg !5 { |
| 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 | %p = call i1 @llvm.type.test(i8* %vtablei8, metadata !"typeid") |
| 23 | call void @llvm.assume(i1 %p) |
| 24 | %fptrptr = getelementptr [1 x i8*], [1 x i8*]* %vtable, i32 0, i32 0 |
| 25 | %fptr = load i8*, i8** %fptrptr |
| 26 | %fptr_casted = bitcast i8* %fptr to void (i8*)* |
| 27 | ; CHECK: call void @vf( |
| 28 | call void %fptr_casted(i8* %obj), !dbg !6 |
| 29 | ret void |
| 30 | } |
| 31 | |
| 32 | declare i1 @llvm.type.test(i8*, metadata) |
| 33 | declare void @llvm.assume(i1) |
| 34 | |
| 35 | !llvm.dbg.cu = !{!0} |
| 36 | !llvm.module.flags = !{!2, !3} |
| 37 | !llvm.ident = !{!4} |
| 38 | |
| 39 | !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 4.0.0 (trunk 278098)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug) |
| 40 | !1 = !DIFile(filename: "devirt-single.cc", directory: ".") |
| 41 | !2 = !{i32 2, !"Dwarf Version", i32 4} |
| 42 | !3 = !{i32 2, !"Debug Info Version", i32 3} |
| 43 | !4 = !{!"clang version 4.0.0 (trunk 278098)"} |
| 44 | !5 = distinct !DISubprogram(name: "call", linkageName: "_Z4callPv", scope: !1, file: !1, line: 29, isLocal: false, isDefinition: true, scopeLine: 9, flags: DIFlagPrototyped, isOptimized: false, unit: !0) |
| 45 | !6 = !DILocation(line: 30, column: 32, scope: !5) |
| 46 | !7 = distinct !DISubprogram(name: "vf", linkageName: "_ZN3vt12vfEv", scope: !1, file: !1, line: 13, isLocal: false, isDefinition: true, scopeLine: 13, flags: DIFlagPrototyped, isOptimized: false, unit: !0) |
| 47 | !8 = !{i32 0, !"typeid"} |