1; RUN: llc < %s | FileCheck %s --check-prefix=ASM 2; RUN: llc -force-instr-ref-livedebugvalues=1 < %s | FileCheck %s --check-prefix=ASM 3; RUN: llc < %s -filetype=obj | llvm-dwarfdump - | FileCheck %s --check-prefix=DWARF 4; RUN: llc -force-instr-ref-livedebugvalues=1 < %s -filetype=obj | llvm-dwarfdump - | FileCheck %s --check-prefix=DWARF 5 6; Values in registers should be clobbered by calls, which use a regmask instead 7; of individual register def operands. 8 9; ASM: main: # @main 10; ASM: #DEBUG_VALUE: main:argc <- $ecx 11; ASM: movl $1, x(%rip) 12; ASM: callq clobber 13; ASM-NEXT: [[argc_range_end:.Ltmp[0-9]+]]: 14; ASM: #DEBUG_VALUE: main:argc <- [DW_OP_LLVM_entry_value 1] $ecx 15 16; argc is the first debug location. 17; ASM: .Ldebug_loc1: 18; ASM-NEXT: .quad .Lfunc_begin0-.Lfunc_begin0 19; ASM-NEXT: .quad [[argc_range_end]]-.Lfunc_begin0 20; ASM-NEXT: .short 1 # Loc expr size 21; ASM-NEXT: .byte 82 # super-register DW_OP_reg2 22 23; argc is the first formal parameter. 24; DWARF: .debug_info contents: 25; DWARF: DW_TAG_formal_parameter 26; DWARF-NEXT: DW_AT_location ({{0x.*}} 27; DWARF-NEXT: [0x0000000000000000, 0x0000000000000013): DW_OP_reg2 RCX 28; DWARF-NEXT: [0x0000000000000013, 0x0000000000000043): DW_OP_GNU_entry_value(DW_OP_reg2 RCX), DW_OP_stack_value 29; 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 !0 37 38; Function Attrs: nounwind uwtable 39define 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 !22 42 tail call void @llvm.dbg.value(metadata i32 %argc, metadata !20, metadata !21), !dbg !23 43 store volatile i32 1, ptr @x, align 4, !dbg !24, !tbaa !25 44 tail call void @clobber() #2, !dbg !29 45 store volatile i32 2, ptr @x, align 4, !dbg !30, !tbaa !25 46 %0 = load volatile i32, ptr @x, align 4, !dbg !31, !tbaa !25 47 %tobool = icmp eq i32 %0, 0, !dbg !31 48 br i1 %tobool, label %if.else, label %if.then, !dbg !33 49 50if.then: ; preds = %entry 51 store volatile i32 3, ptr @x, align 4, !dbg !34, !tbaa !25 52 br label %if.end, !dbg !36 53 54if.else: ; preds = %entry 55 56 store volatile i32 4, ptr @x, align 4, !dbg !37, !tbaa !25 57 br label %if.end 58 59if.end: ; preds = %if.else, %if.then 60 ret i32 0, !dbg !39 61} 62 63declare void @clobber() 64 65; Function Attrs: nounwind readnone 66declare void @llvm.dbg.value(metadata, metadata, metadata) #1 67 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