1; -stats requires asserts 2; REQUIRES: asserts 3 4; RUN: opt -S -passes=wholeprogramdevirt -whole-program-visibility -pass-remarks=wholeprogramdevirt -stats %s 2>&1 | FileCheck %s 5 6target datalayout = "e-p:64:64" 7target triple = "x86_64-unknown-linux-gnu" 8 9; CHECK: remark: devirt-single.cc:30:32: single-impl: devirtualized a call to vf 10; CHECK: remark: devirt-single.cc:41:32: single-impl: devirtualized a call to vf 11; CHECK: remark: devirt-single.cc:51:32: single-impl: devirtualized a call to vf 12; CHECK: remark: devirt-single.cc:13:0: devirtualized vf 13; CHECK-NOT: devirtualized 14 15@vt1 = constant [1 x ptr] [ptr @vf], !type !8 16@vt2 = constant [1 x ptr] [ptr @vf], !type !8 17 18define void @vf(ptr %this) #0 !dbg !7 { 19 ret void 20} 21 22; CHECK: define void @call 23define void @call(ptr %obj) #1 !dbg !5 { 24 %vtable = load ptr, ptr %obj 25 %p = call i1 @llvm.type.test(ptr %vtable, metadata !"typeid") 26 call void @llvm.assume(i1 %p) 27 %fptr = load ptr, ptr %vtable 28 ; CHECK: call void @vf( 29 call void %fptr(ptr %obj), !dbg !6 30 ret void 31} 32 33declare ptr @llvm.load.relative.i32(ptr, i32) 34 35@vt3 = private unnamed_addr constant [1 x i32] [ 36 i32 trunc (i64 sub (i64 ptrtoint (ptr dso_local_equivalent @vf to i64), i64 ptrtoint (ptr @vt3 to i64)) to i32) 37], align 4, !type !11 38 39; CHECK: define void @call2 40define void @call2(ptr %obj) #1 !dbg !9 { 41 %vtable = load ptr, ptr %obj 42 %p = call i1 @llvm.type.test(ptr %vtable, metadata !"typeid2") 43 call void @llvm.assume(i1 %p) 44 %fptr = call ptr @llvm.load.relative.i32(ptr %vtable, i32 0) 45 ; CHECK: call void @vf( 46 call void %fptr(ptr %obj), !dbg !10 47 ret void 48} 49 50@_ZTV1A.local = private unnamed_addr constant { [3 x i32] } { [3 x i32] [ 51 i32 0, ; offset to top 52 i32 0, ; rtti 53 i32 trunc (i64 sub (i64 ptrtoint (ptr dso_local_equivalent @vf to i64), i64 ptrtoint (ptr getelementptr inbounds ({ [3 x i32] }, ptr @_ZTV1A.local, i32 0, i32 0, i32 2) to i64)) to i32) ; vfunc offset 54] }, align 4, !type !14 55 56; CHECK: define void @call3 57define void @call3(ptr %obj) #1 !dbg !12 { 58 %vtable = load ptr, ptr %obj 59 %p = call i1 @llvm.type.test(ptr %vtable, metadata !"typeid3") 60 call void @llvm.assume(i1 %p) 61 %fptr = call ptr @llvm.load.relative.i32(ptr %vtable, i32 8) 62 ; CHECK: call void @vf( 63 call void %fptr(ptr %obj), !dbg !13 64 ret void 65} 66 67 68declare i1 @llvm.type.test(ptr, metadata) 69declare void @llvm.assume(i1) 70 71!llvm.dbg.cu = !{!0} 72!llvm.module.flags = !{!2, !3} 73!llvm.ident = !{!4} 74 75!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) 76!1 = !DIFile(filename: "devirt-single.cc", directory: ".") 77!2 = !{i32 2, !"Dwarf Version", i32 4} 78!3 = !{i32 2, !"Debug Info Version", i32 3} 79!4 = !{!"clang version 4.0.0 (trunk 278098)"} 80!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) 81!6 = !DILocation(line: 30, column: 32, scope: !5) 82!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) 83!8 = !{i32 0, !"typeid"} 84 85!9 = distinct !DISubprogram(name: "call2", linkageName: "_Z5call2Pv", scope: !1, file: !1, line: 40, isLocal: false, isDefinition: true, scopeLine: 9, flags: DIFlagPrototyped, isOptimized: false, unit: !0) 86!10 = !DILocation(line: 41, column: 32, scope: !9) 87!11 = !{i32 0, !"typeid2"} 88 89!12 = distinct !DISubprogram(name: "call3", linkageName: "_Z5call3Pv", scope: !1, file: !1, line: 50, isLocal: false, isDefinition: true, scopeLine: 9, flags: DIFlagPrototyped, isOptimized: false, unit: !0) 90!13 = !DILocation(line: 51, column: 32, scope: !12) 91!14 = !{i32 0, !"typeid3"} 92 93; CHECK: 1 wholeprogramdevirt - Number of whole program devirtualization targets 94; CHECK: 3 wholeprogramdevirt - Number of single implementation devirtualizations 95