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1; RUN: llc -mtriple=x86_64-unknown-unknown -stop-before livedebugvalues %s -o -\2; RUN: -experimental-debug-variable-locations=false \3; RUN: | FileCheck %s --check-prefixes=CHECK,DBGVALUE4; RUN: llc -mtriple=x86_64-unknown-unknown -stop-before livedebugvalues %s -o -\5; RUN: -experimental-debug-variable-locations=true \6; RUN: | FileCheck %s --check-prefixes=CHECK,INSTRREF7;8; Generated at -O1 from:9; typedef struct {10; unsigned long long c;11; } S1;12; struct S3 {13; unsigned long long packed;14; };15; struct S6 {16; struct S0 *b;17; };18; void f(struct S3 *a3)19; {20; struct S4 *s4 = (struct S4 *)(a3->packed + 0x1000UL);21; struct S6 *myVar = (struct S6 *)s4;22; struct S0 *b = myVar->b;23; use(b);24; }25;26; The debug info is attached to the ADD 4096 operation, which doesn't survive27; instruction selection as it is folded into the load. As a result, we should28; refer to s4 and myVar with complex expressions.29;30; CHECK: ![[S4:.*]] = !DILocalVariable(name: "s4",31; CHECK: ![[MYVAR:.*]] = !DILocalVariable(name: "myVar",32; CHECK: $rax = MOV64rm33; INSTRREF-SAME: debug-instr-number 2,34; INSTRREF-NEXT: DBG_INSTR_REF ![[S4]],35; DBGVALUE-NEXT: DBG_VALUE $rax, $noreg, ![[S4]],36; DBGVALUE-SAME: !DIExpression(DW_OP_plus_uconst, 4096, DW_OP_stack_value)37; INSTRREF-SAME: !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_plus_uconst, 4096, DW_OP_stack_value)38; INSTRREF-SAME: dbg-instr-ref(2, 0)39 40; INSTRREF: DBG_INSTR_REF ![[MYVAR]],41; DBGVALUE: DBG_VALUE $rax, $noreg, ![[MYVAR]],42; DBGVALUE-SAME: !DIExpression(DW_OP_plus_uconst, 4096, DW_OP_stack_value)43; INSTRREF-SAME: !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_plus_uconst, 4096, DW_OP_stack_value)44; INSTRREF-SAME: dbg-instr-ref(2, 0)45; CHECK-NEXT: $rdi = MOV64rm killed renamable $rax, 1, $noreg, 4096, $noreg,46 47source_filename = "test.c"48target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"49target triple = "x86_64-apple-macosx10.13.0"50 51%struct.S3 = type { i64 }52%struct.S4 = type opaque53%struct.S0 = type opaque54 55; Function Attrs: noinline nounwind ssp uwtable56define void @f(ptr nocapture readonly %a3) local_unnamed_addr #0 !dbg !6 {57entry:58 tail call void @llvm.dbg.value(metadata ptr %a3, metadata !15, metadata !DIExpression()), !dbg !3059 %0 = load i64, ptr %a3, align 8, !dbg !3160 %add = add i64 %0, 4096, !dbg !3761 %1 = inttoptr i64 %add to ptr, !dbg !3862 tail call void @llvm.dbg.value(metadata ptr %1, metadata !16, metadata !DIExpression()), !dbg !3963 tail call void @llvm.dbg.value(metadata ptr %1, metadata !17, metadata !DIExpression()), !dbg !4064 %2 = load ptr, ptr %1, align 8, !dbg !4165 tail call void @llvm.dbg.value(metadata ptr %2, metadata !24, metadata !DIExpression()), !dbg !4566 %call = tail call i32 (ptr, ...) @use(ptr %2) #3, !dbg !4667 ret void, !dbg !4768}69 70declare i32 @use(...) local_unnamed_addr71 72; Function Attrs: nounwind readnone speculatable73declare void @llvm.dbg.value(metadata, metadata, metadata) #274 75attributes #0 = { noinline nounwind ssp uwtable }76attributes #2 = { nounwind readnone speculatable }77attributes #3 = { nounwind }78 79!llvm.dbg.cu = !{!0}80!llvm.module.flags = !{!25, !26, !27, !28}81!llvm.ident = !{!29}82 83!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 6.0.0 (trunk 316467) (llvm/trunk 316466)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, retainedTypes: !3)84!1 = !DIFile(filename: "test.c", directory: "/")85!2 = !{}86!3 = !{!4, !18}87!4 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !5, size: 64)88!5 = !DICompositeType(tag: DW_TAG_structure_type, name: "S4", scope: !6, file: !1, line: 20, flags: DIFlagFwdDecl)89!6 = distinct !DISubprogram(name: "f", scope: !1, file: !1, line: 18, type: !7, isLocal: false, isDefinition: true, scopeLine: 19, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !14)90!7 = !DISubroutineType(types: !8)91!8 = !{null, !9}92!9 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !10, size: 64)93!10 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "S3", file: !1, line: 5, size: 64, elements: !11)94!11 = !{!12}95!12 = !DIDerivedType(tag: DW_TAG_member, name: "packed", scope: !10, file: !1, line: 6, baseType: !13, size: 64)96!13 = !DIBasicType(name: "long long unsigned int", size: 64, encoding: DW_ATE_unsigned)97!14 = !{!15, !16, !17, !24}98!15 = !DILocalVariable(name: "a3", arg: 1, scope: !6, file: !1, line: 18, type: !9)99!16 = !DILocalVariable(name: "s4", scope: !6, file: !1, line: 20, type: !4)100!17 = !DILocalVariable(name: "myVar", scope: !6, file: !1, line: 21, type: !18)101!18 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !19, size: 64)102!19 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "S6", file: !1, line: 8, size: 64, elements: !20)103!20 = !{!21}104!21 = !DIDerivedType(tag: DW_TAG_member, name: "b", scope: !19, file: !1, line: 9, baseType: !22, size: 64)105!22 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !23, size: 64)106!23 = !DICompositeType(tag: DW_TAG_structure_type, name: "S0", file: !1, line: 4, flags: DIFlagFwdDecl)107!24 = !DILocalVariable(name: "b", scope: !6, file: !1, line: 22, type: !22)108!25 = !{i32 2, !"Dwarf Version", i32 4}109!26 = !{i32 2, !"Debug Info Version", i32 3}110!27 = !{i32 1, !"wchar_size", i32 4}111!28 = !{i32 7, !"PIC Level", i32 2}112!29 = !{!"clang version 6.0.0 (trunk 316467) (llvm/trunk 316466)"}113!30 = !DILocation(line: 18, column: 14, scope: !6)114!31 = !DILocation(line: 20, column: 37, scope: !6)115!37 = !DILocation(line: 20, column: 44, scope: !6)116!38 = !DILocation(line: 20, column: 19, scope: !6)117!39 = !DILocation(line: 20, column: 14, scope: !6)118!40 = !DILocation(line: 21, column: 14, scope: !6)119!41 = !DILocation(line: 22, column: 25, scope: !6)120!45 = !DILocation(line: 22, column: 14, scope: !6)121!46 = !DILocation(line: 23, column: 3, scope: !6)122!47 = !DILocation(line: 24, column: 1, scope: !6)123