1; RUN: llc -O0 < %s | FileCheck %s --check-prefix=CHECK --check-prefix=DEBUG 2; RUN: llc < %s | FileCheck %s 3; RUN: llc -filetype=obj -O0 < %s | llvm-readobj --codeview - | FileCheck %s --check-prefix=OBJ 4 5; Same checks, this time with experimental debuginfo iterators. 6; RUN: llc --try-experimental-debuginfo-iterators -O0 < %s | FileCheck %s --check-prefix=CHECK --check-prefix=DEBUG 7; RUN: llc --try-experimental-debuginfo-iterators < %s | FileCheck %s 8; RUN: llc --try-experimental-debuginfo-iterators -filetype=obj -O0 < %s | llvm-readobj --codeview - | FileCheck %s --check-prefix=OBJ 9 10; IR generated by the following source: 11; struct NonTrivial { 12; NonTrivial();// : x(42) {} 13; ~NonTrivial();// {} 14; int x; 15; }; 16; extern "C" void g(int);// {} 17; extern "C" void h(int);// {} 18; extern "C" void f(NonTrivial a, int b, int unused, int c) { 19; if (b) { 20; g(c); 21; } else { 22; h(a.x); 23; } 24; (void)unused; 25; } 26; //int main() { 27; // NonTrivial x; 28; // f(x, 1, 2, 3); 29; //} 30; 31; Remove C++ comments to have a complete, debuggable program. 32 33; We don't need (or want) DBG_VALUE instructions to describe the location of 34; inalloca arguments. We want frame indices in the side table, especially at 35; -O0, because they are reliable across the entire function and don't require 36; any propagation or analysis. 37 38; CHECK: _f: # @f 39; CHECK: Lfunc_begin0: 40; CHECK-NOT: DEBUG_VALUE 41; CHECK: [[start:Ltmp[0-9]+]]: 42; CHECK-NOT: DEBUG_VALUE 43; CHECK: cmpl 44; CHECK: calll _g 45; CHECK: calll _h 46; CHECK: jmp "??1NonTrivial@@QAE@XZ" 47; CHECK: [[end:Ltmp[0-9]+]]: 48; CHECK: Lfunc_end0: 49 50; FIXME: Optimized debug info should preserve this. 51; DEBUG: .short 4414 # Record kind: S_LOCAL 52; DEBUG: .asciz "a" 53; DEBUG: .cv_def_range [[start]] [[end]] 54 55; CHECK: .short 4414 # Record kind: S_LOCAL 56; CHECK: .asciz "b" 57; CHECK: .cv_def_range [[start]] [[end]] 58 59; CHECK: .short 4414 # Record kind: S_LOCAL 60; CHECK: .asciz "c" 61; CHECK: .cv_def_range [[start]] [[end]] 62 63; OBJ-LABEL: {{.*}}Proc{{.*}}Sym { 64; OBJ: Kind: S_GPROC32_ID (0x1147) 65; OBJ: DisplayName: f 66; OBJ: } 67; OBJ: FrameProcSym { 68; OBJ: Kind: S_FRAMEPROC (0x1012) 69; OBJ: TotalFrameBytes: 0x8 70; OBJ: LocalFramePtrReg: VFRAME (0x7536) 71; OBJ: ParamFramePtrReg: VFRAME (0x7536) 72; OBJ: } 73; OBJ: LocalSym { 74; OBJ: Kind: S_LOCAL (0x113E) 75; OBJ: Type: NonTrivial (0x{{.*}}) 76; OBJ: Flags [ (0x1) 77; OBJ: IsParameter (0x1) 78; OBJ: ] 79; OBJ: VarName: a 80; OBJ: } 81; OBJ: DefRangeFramePointerRelSym { 82; OBJ: Offset: 4 83; OBJ: } 84; OBJ: LocalSym { 85; OBJ: Type: int (0x74) 86; OBJ: Flags [ (0x1) 87; OBJ: IsParameter (0x1) 88; OBJ: ] 89; OBJ: VarName: b 90; OBJ: } 91; OBJ: DefRangeFramePointerRelSym { 92; OBJ: Offset: 8 93; OBJ: } 94; FIXME: Retain unused. 95; OBJ: LocalSym { 96; OBJ: Type: int (0x74) 97; OBJ: Flags [ (0x1) 98; OBJ: IsParameter (0x1) 99; OBJ: ] 100; OBJ: VarName: c 101; OBJ: } 102; OBJ: DefRangeFramePointerRelSym { 103; OBJ: Offset: 16 104; OBJ: } 105; OBJ-LABEL: ProcEnd { 106; OBJ: } 107 108 109; ModuleID = 't.cpp' 110source_filename = "t.cpp" 111target datalayout = "e-m:x-p:32:32-i64:64-f80:32-n8:16:32-a:0:32-S32" 112target triple = "i386-pc-windows-msvc19.10.24728" 113 114%struct.NonTrivial = type { i32 } 115 116; Function Attrs: nounwind 117define void @f(ptr inalloca(<{ %struct.NonTrivial, i32, i32, i32 }>)) local_unnamed_addr #0 !dbg !7 { 118entry: 119 %a = getelementptr inbounds <{ %struct.NonTrivial, i32, i32, i32 }>, ptr %0, i32 0, i32 0 120 %b = getelementptr inbounds <{ %struct.NonTrivial, i32, i32, i32 }>, ptr %0, i32 0, i32 1 121 call void @llvm.dbg.declare(metadata ptr %b, metadata !22, metadata !24), !dbg !26 122 call void @llvm.dbg.declare(metadata ptr %a, metadata !23, metadata !24), !dbg !27 123 %1 = load i32, ptr %b, align 4, !dbg !28, !tbaa !30 124 %tobool = icmp eq i32 %1, 0, !dbg !28 125 br i1 %tobool, label %if.else, label %if.then, !dbg !34 126 127if.then: ; preds = %entry 128 %c = getelementptr inbounds <{ %struct.NonTrivial, i32, i32, i32 }>, ptr %0, i32 0, i32 3 129 call void @llvm.dbg.declare(metadata ptr %c, metadata !20, metadata !24), !dbg !25 130 %2 = load i32, ptr %c, align 4, !dbg !35, !tbaa !30 131 tail call void @g(i32 %2) #4, !dbg !37 132 br label %if.end, !dbg !38 133 134if.else: ; preds = %entry 135 %x = getelementptr inbounds <{ %struct.NonTrivial, i32, i32, i32 }>, ptr %0, i32 0, i32 0, i32 0, !dbg !39 136 %3 = load i32, ptr %x, align 4, !dbg !39, !tbaa !41 137 tail call void @h(i32 %3) #4, !dbg !43 138 br label %if.end 139 140if.end: ; preds = %if.else, %if.then 141 tail call x86_thiscallcc void @"\01??1NonTrivial@@QAE@XZ"(ptr nonnull %a) #4, !dbg !44 142 ret void, !dbg !44 143} 144 145; Function Attrs: nounwind readnone speculatable 146declare void @llvm.dbg.declare(metadata, metadata, metadata) #1 147 148declare void @g(i32) local_unnamed_addr 149 150declare void @h(i32) local_unnamed_addr 151 152; Function Attrs: nounwind 153declare x86_thiscallcc void @"\01??1NonTrivial@@QAE@XZ"(ptr) unnamed_addr #3 154 155attributes #0 = { nounwind } 156attributes #1 = { nounwind readnone speculatable } 157attributes #3 = { nounwind } 158attributes #4 = { nounwind } 159 160!llvm.dbg.cu = !{!0} 161!llvm.module.flags = !{!3, !4, !5} 162!llvm.ident = !{!6} 163 164!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 5.0.0 ", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2) 165!1 = !DIFile(filename: "t.cpp", directory: "C:\5Csrc\5Cllvm-project\5Cbuild", checksumkind: CSK_MD5, checksum: "e41e3fda2a91b52e121ed6c29a209eae") 166!2 = !{} 167!3 = !{i32 1, !"NumRegisterParameters", i32 0} 168!4 = !{i32 2, !"CodeView", i32 1} 169!5 = !{i32 2, !"Debug Info Version", i32 3} 170!6 = !{!"clang version 5.0.0 "} 171!7 = distinct !DISubprogram(name: "f", scope: !1, file: !1, line: 8, type: !8, isLocal: false, isDefinition: true, scopeLine: 8, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !19) 172!8 = !DISubroutineType(types: !9) 173!9 = !{null, !10, !13, !13, !13} 174!10 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "NonTrivial", file: !1, line: 1, size: 32, elements: !11, identifier: ".?AUNonTrivial@@") 175!11 = !{!12, !14, !18} 176!12 = !DIDerivedType(tag: DW_TAG_member, name: "x", scope: !10, file: !1, line: 4, baseType: !13, size: 32) 177!13 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) 178!14 = !DISubprogram(name: "NonTrivial", scope: !10, file: !1, line: 2, type: !15, isLocal: false, isDefinition: false, scopeLine: 2, flags: DIFlagPrototyped, isOptimized: true) 179!15 = !DISubroutineType(cc: DW_CC_BORLAND_thiscall, types: !16) 180!16 = !{null, !17} 181!17 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !10, size: 32, flags: DIFlagArtificial | DIFlagObjectPointer) 182!18 = !DISubprogram(name: "~NonTrivial", scope: !10, file: !1, line: 3, type: !15, isLocal: false, isDefinition: false, scopeLine: 3, flags: DIFlagPrototyped, isOptimized: true) 183!19 = !{!20, !21, !22, !23} 184!20 = !DILocalVariable(name: "c", arg: 4, scope: !7, file: !1, line: 8, type: !13) 185!21 = !DILocalVariable(name: "unused", arg: 3, scope: !7, file: !1, line: 8, type: !13) 186!22 = !DILocalVariable(name: "b", arg: 2, scope: !7, file: !1, line: 8, type: !13) 187!23 = !DILocalVariable(name: "a", arg: 1, scope: !7, file: !1, line: 8, type: !10) 188!24 = !DIExpression() 189!25 = !DILocation(line: 8, column: 56, scope: !7) 190!26 = !DILocation(line: 8, column: 37, scope: !7) 191!27 = !DILocation(line: 8, column: 30, scope: !7) 192!28 = !DILocation(line: 9, column: 7, scope: !29) 193!29 = distinct !DILexicalBlock(scope: !7, file: !1, line: 9, column: 7) 194!30 = !{!31, !31, i64 0} 195!31 = !{!"int", !32, i64 0} 196!32 = !{!"omnipotent char", !33, i64 0} 197!33 = !{!"Simple C++ TBAA"} 198!34 = !DILocation(line: 9, column: 7, scope: !7) 199!35 = !DILocation(line: 10, column: 7, scope: !36) 200!36 = distinct !DILexicalBlock(scope: !29, file: !1, line: 9, column: 10) 201!37 = !DILocation(line: 10, column: 5, scope: !36) 202!38 = !DILocation(line: 11, column: 3, scope: !36) 203!39 = !DILocation(line: 12, column: 9, scope: !40) 204!40 = distinct !DILexicalBlock(scope: !29, file: !1, line: 11, column: 10) 205!41 = !{!42, !31, i64 0} 206!42 = !{!"?AUNonTrivial@@", !31, i64 0} 207!43 = !DILocation(line: 12, column: 5, scope: !40) 208!44 = !DILocation(line: 15, column: 1, scope: !7) 209