1; RUN: opt -S -wholeprogramdevirt -whole-program-visibility -pass-remarks=wholeprogramdevirt %s 2>&1 | FileCheck %s 2 3target datalayout = "e-p:64:64" 4target 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 13define void @vf(i8* %this) #0 !dbg !7 { 14 ret void 15} 16 17; CHECK: define void @call 18define 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 32declare i1 @llvm.type.test(i8*, metadata) 33declare 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"} 48