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115 lines
5.0 KiB
LLVM
115 lines
5.0 KiB
LLVM
; RUN: llc < %s | FileCheck %s --check-prefix=ASM
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; RUN: llc < %s -filetype=obj | llvm-dwarfdump -v - | FileCheck %s --check-prefix=DWARF
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; Values in registers should be clobbered by calls, which use a regmask instead
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; of individual register def operands.
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; ASM: main: # @main
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; ASM: #DEBUG_VALUE: main:argc <- %ecx
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; ASM: movl $1, x(%rip)
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; ASM: callq clobber
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; ASM-NEXT: [[argc_range_end:.Ltmp[0-9]+]]:
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; Previously LiveDebugValues would claim argc was still in ecx after the call.
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; ASM-NOT: #DEBUG_VALUE: main:argc
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; argc is the first debug location.
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; ASM: .Ldebug_loc1:
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; ASM-NEXT: .quad .Lfunc_begin0-.Lfunc_begin0
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; ASM-NEXT: .quad [[argc_range_end]]-.Lfunc_begin0
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; ASM-NEXT: .short 1 # Loc expr size
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; ASM-NEXT: .byte 82 # super-register DW_OP_reg2
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; argc is the first formal parameter.
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; DWARF: .debug_info contents:
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; DWARF: DW_TAG_formal_parameter
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; DWARF-NEXT: DW_AT_location [DW_FORM_sec_offset] ({{0x.*}}
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; DWARF-NEXT: 0x0000000000000000 - 0x0000000000000013: DW_OP_reg2 RCX)
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; DWARF-NEXT: DW_AT_name [DW_FORM_strp] {{.*}} "argc"
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; ModuleID = 't.cpp'
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source_filename = "test/DebugInfo/X86/dbg-value-regmask-clobber.ll"
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target datalayout = "e-m:w-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-pc-windows-msvc18.0.0"
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@x = common global i32 0, align 4, !dbg !0
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; Function Attrs: nounwind uwtable
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define i32 @main(i32 %argc, i8** nocapture readnone %argv) #0 !dbg !12 {
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entry:
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tail call void @llvm.dbg.value(metadata i8** %argv, metadata !19, metadata !21), !dbg !22
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tail call void @llvm.dbg.value(metadata i32 %argc, metadata !20, metadata !21), !dbg !23
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store volatile i32 1, i32* @x, align 4, !dbg !24, !tbaa !25
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tail call void @clobber() #2, !dbg !29
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store volatile i32 2, i32* @x, align 4, !dbg !30, !tbaa !25
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%0 = load volatile i32, i32* @x, align 4, !dbg !31, !tbaa !25
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%tobool = icmp eq i32 %0, 0, !dbg !31
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br i1 %tobool, label %if.else, label %if.then, !dbg !33
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if.then: ; preds = %entry
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store volatile i32 3, i32* @x, align 4, !dbg !34, !tbaa !25
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br label %if.end, !dbg !36
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if.else: ; preds = %entry
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store volatile i32 4, i32* @x, align 4, !dbg !37, !tbaa !25
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br label %if.end
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if.end: ; preds = %if.else, %if.then
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ret i32 0, !dbg !39
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}
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declare void @clobber()
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; Function Attrs: nounwind readnone
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declare void @llvm.dbg.value(metadata, metadata, metadata) #1
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attributes #0 = { nounwind uwtable }
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attributes #1 = { nounwind readnone }
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attributes #2 = { nounwind }
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!llvm.dbg.cu = !{!2}
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!llvm.module.flags = !{!8, !9, !10}
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!llvm.ident = !{!11}
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!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
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!1 = !DIGlobalVariable(name: "x", scope: !2, file: !3, line: 1, type: !6, isLocal: false, isDefinition: true)
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!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)
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!3 = !DIFile(filename: "t.cpp", directory: "D:\5Csrc\5Cllvm\5Cbuild")
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!4 = !{}
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!5 = !{!0}
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!6 = !DIDerivedType(tag: DW_TAG_volatile_type, baseType: !7)
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!7 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
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!8 = !{i32 2, !"Dwarf Version", i32 4}
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!9 = !{i32 2, !"Debug Info Version", i32 3}
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!10 = !{i32 1, !"PIC Level", i32 2}
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!11 = !{!"clang version 3.9.0 (trunk 260617) (llvm/trunk 260619)"}
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!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, variables: !18)
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!13 = !DISubroutineType(types: !14)
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!14 = !{!7, !7, !15}
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!15 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !16, size: 64, align: 64)
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!16 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !17, size: 64, align: 64)
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!17 = !DIBasicType(name: "char", size: 8, align: 8, encoding: DW_ATE_signed_char)
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!18 = !{!19, !20}
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!19 = !DILocalVariable(name: "argv", arg: 2, scope: !12, file: !3, line: 4, type: !15)
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!20 = !DILocalVariable(name: "argc", arg: 1, scope: !12, file: !3, line: 4, type: !7)
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!21 = !DIExpression()
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!22 = !DILocation(line: 4, column: 27, scope: !12)
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!23 = !DILocation(line: 4, column: 14, scope: !12)
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!24 = !DILocation(line: 5, column: 5, scope: !12)
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!25 = !{!26, !26, i64 0}
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!26 = !{!"int", !27, i64 0}
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!27 = !{!"omnipotent char", !28, i64 0}
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!28 = !{!"Simple C/C++ TBAA"}
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!29 = !DILocation(line: 6, column: 3, scope: !12)
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!30 = !DILocation(line: 7, column: 5, scope: !12)
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!31 = !DILocation(line: 8, column: 7, scope: !32)
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!32 = distinct !DILexicalBlock(scope: !12, file: !3, line: 8, column: 7)
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!33 = !DILocation(line: 8, column: 7, scope: !12)
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!34 = !DILocation(line: 9, column: 7, scope: !35)
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!35 = distinct !DILexicalBlock(scope: !32, file: !3, line: 8, column: 10)
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!36 = !DILocation(line: 10, column: 3, scope: !35)
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!37 = !DILocation(line: 11, column: 7, scope: !38)
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!38 = distinct !DILexicalBlock(scope: !32, file: !3, line: 10, column: 10)
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!39 = !DILocation(line: 13, column: 1, scope: !12)
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