1c2d3338eb
This patch removes the verbose option from tests that do not need it and simplifies the checks. For tests that do have the verbose option, the checks were standardized to be more readable and consistent. Reviewed By: shchenz, dblaikie Differential Revision: https://reviews.llvm.org/D112636
79 lines
3.5 KiB
LLVM
79 lines
3.5 KiB
LLVM
; RUN: %llc_dwarf -O0 -filetype=obj < %s | llvm-dwarfdump -debug-info - | FileCheck %s
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; Built from the following source with clang -O1
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; struct S { int i; };
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; int function(struct S s, int i) { return s.i + i; }
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; Due to the X86_64 ABI, 's' is passed in registers and once optimized, the
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; entirety of 's' is never reconstituted, since only the int is required, and
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; thus the variable's location is unknown/dead to debug info.
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; Future/current work should enable us to describe partial variables, which, in
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; this case, happens to be the entire variable.
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; CHECK: DW_TAG_subprogram
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; CHECK-NOT: DW_TAG
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; CHECK: DW_AT_name ("function")
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; CHECK-NOT: {{DW_TAG|NULL}}
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; CHECK: DW_TAG_formal_parameter
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; CHECK-NOT: DW_TAG
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; CHECK: DW_AT_name ("s")
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; CHECK-NOT: DW_TAG
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; FIXME: Even though 's' is never reconstituted into a struct, the one member
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; variable is still live and used, and so we should be able to describe 's's
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; location as the location of that int.
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; CHECK-NOT: DW_AT_location
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; CHECK-NOT: {{DW_TAG|NULL}}
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; CHECK: DW_TAG_formal_parameter
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; CHECK-NOT: DW_TAG
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; CHECK: DW_AT_location
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; CHECK-NOT: DW_TAG
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; CHECK: DW_AT_name ("i")
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%struct.S = type { i32 }
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; Function Attrs: nounwind readnone uwtable
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define i32 @_Z8function1Si(i32 %s.coerce, i32 %i) #0 !dbg !9 {
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entry:
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tail call void @llvm.dbg.declare(metadata %struct.S* undef, metadata !14, metadata !DIExpression()), !dbg !20
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tail call void @llvm.dbg.value(metadata i32 %i, metadata !15, metadata !DIExpression()), !dbg !20
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%add = add nsw i32 %i, %s.coerce, !dbg !20
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ret i32 %add, !dbg !20
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}
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; Function Attrs: nounwind readnone
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declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
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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 readnone uwtable "less-precise-fpmad"="false" "frame-pointer"="none" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
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attributes #1 = { nounwind readnone }
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!16, !17}
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!llvm.ident = !{!18}
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!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.5.0 ", isOptimized: true, emissionKind: FullDebug, file: !1, enums: !2, retainedTypes: !3, globals: !2, imports: !2)
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!1 = !DIFile(filename: "dead-argument-order.cpp", directory: "/tmp/dbginfo")
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!2 = !{}
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!3 = !{!4}
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!4 = !DICompositeType(tag: DW_TAG_structure_type, name: "S", line: 1, size: 32, align: 32, file: !1, elements: !5, identifier: "_ZTS1S")
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!5 = !{!6}
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!6 = !DIDerivedType(tag: DW_TAG_member, name: "i", line: 1, size: 32, align: 32, file: !1, scope: !4, baseType: !7)
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!7 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
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!9 = distinct !DISubprogram(name: "function", linkageName: "_Z8function1Si", line: 2, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, unit: !0, scopeLine: 2, file: !1, scope: !10, type: !11, retainedNodes: !13)
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!10 = !DIFile(filename: "dead-argument-order.cpp", directory: "/tmp/dbginfo")
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!11 = !DISubroutineType(types: !12)
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!12 = !{!7, !4, !7}
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!13 = !{!14, !15}
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!14 = !DILocalVariable(name: "s", line: 2, arg: 1, scope: !9, file: !10, type: !4)
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!15 = !DILocalVariable(name: "i", line: 2, arg: 2, scope: !9, file: !10, type: !7)
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!16 = !{i32 2, !"Dwarf Version", i32 4}
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!17 = !{i32 2, !"Debug Info Version", i32 3}
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!18 = !{!"clang version 3.5.0 "}
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!19 = !{%struct.S* undef}
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!20 = !DILocation(line: 2, scope: !9)
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