1 ; RUN: opt -S -wholeprogramdevirt -pass-remarks=wholeprogramdevirt %s 2>&1 | FileCheck %s
3 target datalayout = "e-p:64:64"
4 target triple = "x86_64-unknown-linux-gnu"
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
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
13 define void @vf(i8* %this) #0 !dbg !7 {
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
32 declare i1 @llvm.type.test(i8*, metadata)
33 declare void @llvm.assume(i1)
36 !llvm.module.flags = !{!2, !3}
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"}