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1; RUN: llc < %s | FileCheck %s --check-prefix=ASM2; RUN: llc -force-instr-ref-livedebugvalues=1 < %s | FileCheck %s --check-prefix=ASM3; RUN: llc < %s -filetype=obj | llvm-dwarfdump - | FileCheck %s --check-prefix=DWARF4; RUN: llc -force-instr-ref-livedebugvalues=1 < %s -filetype=obj | llvm-dwarfdump - | FileCheck %s --check-prefix=DWARF5 6; Values in registers should be clobbered by calls, which use a regmask instead7; of individual register def operands.8 9; ASM: main: # @main10; ASM: #DEBUG_VALUE: main:argc <- $ecx11; ASM: movl $1, x(%rip)12; ASM: callq clobber13; ASM-NEXT: [[argc_range_end:.Ltmp[0-9]+]]:14; ASM: #DEBUG_VALUE: main:argc <- [DW_OP_LLVM_entry_value 1] $ecx15 16; argc is the first debug location.17; ASM: .Ldebug_loc1:18; ASM-NEXT: .quad .Lfunc_begin0-.Lfunc_begin019; ASM-NEXT: .quad [[argc_range_end]]-.Lfunc_begin020; ASM-NEXT: .short 1 # Loc expr size21; ASM-NEXT: .byte 82 # super-register DW_OP_reg222 23; argc is the first formal parameter.24; DWARF: .debug_info contents:25; DWARF: DW_TAG_formal_parameter26; DWARF-NEXT: DW_AT_location ({{0x.*}}27; DWARF-NEXT: [0x0000000000000000, 0x0000000000000013): DW_OP_reg2 RCX28; DWARF-NEXT: [0x0000000000000013, 0x0000000000000043): DW_OP_GNU_entry_value(DW_OP_reg2 RCX), DW_OP_stack_value29; DWARF-NEXT: DW_AT_name ("argc")30 31; ModuleID = 't.cpp'32source_filename = "test/DebugInfo/X86/dbg-value-regmask-clobber.ll"33target datalayout = "e-m:w-i64:64-f80:128-n8:16:32:64-S128"34target triple = "x86_64-pc-windows-msvc18.0.0"35 36@x = common global i32 0, align 4, !dbg !037 38; Function Attrs: nounwind uwtable39define i32 @main(i32 %argc, ptr nocapture readnone %argv) #0 !dbg !12 {40entry:41 tail call void @llvm.dbg.value(metadata ptr %argv, metadata !19, metadata !21), !dbg !2242 tail call void @llvm.dbg.value(metadata i32 %argc, metadata !20, metadata !21), !dbg !2343 store volatile i32 1, ptr @x, align 4, !dbg !24, !tbaa !2544 tail call void @clobber() #2, !dbg !2945 store volatile i32 2, ptr @x, align 4, !dbg !30, !tbaa !2546 %0 = load volatile i32, ptr @x, align 4, !dbg !31, !tbaa !2547 %tobool = icmp eq i32 %0, 0, !dbg !3148 br i1 %tobool, label %if.else, label %if.then, !dbg !3349 50if.then: ; preds = %entry51 store volatile i32 3, ptr @x, align 4, !dbg !34, !tbaa !2552 br label %if.end, !dbg !3653 54if.else: ; preds = %entry55 56 store volatile i32 4, ptr @x, align 4, !dbg !37, !tbaa !2557 br label %if.end58 59if.end: ; preds = %if.else, %if.then60 ret i32 0, !dbg !3961}62 63declare void @clobber()64 65; Function Attrs: nounwind readnone66declare void @llvm.dbg.value(metadata, metadata, metadata) #167 68attributes #0 = { nounwind uwtable }69attributes #1 = { nounwind readnone }70attributes #2 = { nounwind }71 72!llvm.dbg.cu = !{!2}73!llvm.module.flags = !{!8, !9, !10}74!llvm.ident = !{!11}75 76!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())77!1 = !DIGlobalVariable(name: "x", scope: !2, file: !3, line: 1, type: !6, isLocal: false, isDefinition: true)78!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 3.9.0 (trunk 260617) (llvm/trunk 260619)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5)79!3 = !DIFile(filename: "t.cpp", directory: "D:\5Csrc\5Cllvm\5Cbuild")80!4 = !{}81!5 = !{!0}82!6 = !DIDerivedType(tag: DW_TAG_volatile_type, baseType: !7)83!7 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)84!8 = !{i32 2, !"Dwarf Version", i32 4}85!9 = !{i32 2, !"Debug Info Version", i32 3}86!10 = !{i32 1, !"PIC Level", i32 2}87!11 = !{!"clang version 3.9.0 (trunk 260617) (llvm/trunk 260619)"}88!12 = distinct !DISubprogram(name: "main", scope: !3, file: !3, line: 4, type: !13, isLocal: false, isDefinition: true, scopeLine: 4, flags: DIFlagPrototyped, isOptimized: true, unit: !2, retainedNodes: !18)89!13 = !DISubroutineType(types: !14)90!14 = !{!7, !7, !15}91!15 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !16, size: 64, align: 64)92!16 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !17, size: 64, align: 64)93!17 = !DIBasicType(name: "char", size: 8, align: 8, encoding: DW_ATE_signed_char)94!18 = !{!19, !20}95!19 = !DILocalVariable(name: "argv", arg: 2, scope: !12, file: !3, line: 4, type: !15)96!20 = !DILocalVariable(name: "argc", arg: 1, scope: !12, file: !3, line: 4, type: !7)97!21 = !DIExpression()98!22 = !DILocation(line: 4, column: 27, scope: !12)99!23 = !DILocation(line: 4, column: 14, scope: !12)100!24 = !DILocation(line: 5, column: 5, scope: !12)101!25 = !{!26, !26, i64 0}102!26 = !{!"int", !27, i64 0}103!27 = !{!"omnipotent char", !28, i64 0}104!28 = !{!"Simple C/C++ TBAA"}105!29 = !DILocation(line: 6, column: 3, scope: !12)106!30 = !DILocation(line: 7, column: 5, scope: !12)107!31 = !DILocation(line: 8, column: 7, scope: !32)108!32 = distinct !DILexicalBlock(scope: !12, file: !3, line: 8, column: 7)109!33 = !DILocation(line: 8, column: 7, scope: !12)110!34 = !DILocation(line: 9, column: 7, scope: !35)111!35 = distinct !DILexicalBlock(scope: !32, file: !3, line: 8, column: 10)112!36 = !DILocation(line: 10, column: 3, scope: !35)113!37 = !DILocation(line: 11, column: 7, scope: !38)114!38 = distinct !DILexicalBlock(scope: !32, file: !3, line: 10, column: 10)115!39 = !DILocation(line: 13, column: 1, scope: !12)116 117