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https://github.com/c64scene-ar/llvm-6502.git
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Make the use of DW_AT_ranges in the compile unit depend also upon
the existence of comdat/special sections. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199954 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Eric Christopher
parent
e0fd567df0
commit
2f9fe10f6f
@ -179,7 +179,7 @@ static unsigned getDwarfVersionFromModule(const Module *M) {
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DwarfDebug::DwarfDebug(AsmPrinter *A, Module *M)
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: Asm(A), MMI(Asm->MMI), FirstCU(0), SourceIdMap(DIEValueAllocator),
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PrevLabel(NULL), GlobalRangeCount(0),
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InfoHolder(A, "info_string", DIEValueAllocator),
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InfoHolder(A, "info_string", DIEValueAllocator), HasCURanges(false),
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SkeletonHolder(A, "skel_string", DIEValueAllocator) {
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DwarfInfoSectionSym = DwarfAbbrevSectionSym = DwarfStrSectionSym = 0;
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@ -209,10 +209,6 @@ DwarfDebug::DwarfDebug(AsmPrinter *A, Module *M)
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else
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HasDwarfPubSections = DwarfPubSections == Enable;
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// For now only turn on CU ranges if we've explicitly asked for it
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// or we have -ffunction-sections enabled.
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HasCURanges = DwarfCURanges || TargetMachine::getFunctionSections();
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DwarfVersion = DwarfVersionNumber
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? DwarfVersionNumber
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: getDwarfVersionFromModule(MMI->getModule());
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@ -1126,6 +1122,13 @@ void DwarfDebug::endSections() {
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// Insert a final terminator.
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SectionMap[Section].push_back(SymbolCU(NULL, Sym));
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}
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// For now only turn on CU ranges if we've explicitly asked for it,
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// we have -ffunction-sections enabled, or we've emitted a function
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// into a unique section. At this point all sections should be finalized
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// except for dwarf sections.
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HasCURanges = DwarfCURanges || Asm->TM.debugUseUniqueSections() ||
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TargetMachine::getFunctionSections();
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}
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// Emit all Dwarf sections that should come after the content.
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96
test/DebugInfo/X86/cu-ranges-odr.ll
Normal file
96
test/DebugInfo/X86/cu-ranges-odr.ll
Normal file
@ -0,0 +1,96 @@
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; RUN: llc -split-dwarf=Enable -O0 %s -mtriple=x86_64-unknown-linux-gnu -filetype=obj -o %t
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; RUN: llvm-dwarfdump -debug-dump=all %t | FileCheck %s
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; RUN: llvm-readobj --relocations %t | FileCheck --check-prefix=CHECK-RELOCS %s
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; From:
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; class A {
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; public:
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; A(int i = 0) : a(i) {}
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; private:
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; int a;
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; };
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;
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; A a;
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; With function sections enabled make sure that we have a DW_AT_ranges attribute.
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; CHECK: DW_AT_ranges
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; Check that we have a relocation against the .debug_ranges section.
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; CHECK-RELOCS: R_X86_64_32 .debug_ranges 0x0
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%class.A = type { i32 }
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@a = global %class.A zeroinitializer, align 4
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@llvm.global_ctors = appending global [1 x { i32, void ()* }] [{ i32, void ()* } { i32 65535, void ()* @_GLOBAL__I_a }]
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define internal void @__cxx_global_var_init() section ".text.startup" {
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entry:
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call void @_ZN1AC2Ei(%class.A* @a, i32 0), !dbg !26
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ret void, !dbg !26
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}
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; Function Attrs: nounwind uwtable
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define linkonce_odr void @_ZN1AC2Ei(%class.A* %this, i32 %i) unnamed_addr #0 align 2 {
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entry:
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%this.addr = alloca %class.A*, align 8
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%i.addr = alloca i32, align 4
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store %class.A* %this, %class.A** %this.addr, align 8
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call void @llvm.dbg.declare(metadata !{%class.A** %this.addr}, metadata !27), !dbg !29
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store i32 %i, i32* %i.addr, align 4
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call void @llvm.dbg.declare(metadata !{i32* %i.addr}, metadata !30), !dbg !31
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%this1 = load %class.A** %this.addr
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%a = getelementptr inbounds %class.A* %this1, i32 0, i32 0, !dbg !31
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%0 = load i32* %i.addr, align 4, !dbg !31
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store i32 %0, i32* %a, align 4, !dbg !31
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ret void, !dbg !31
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}
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; Function Attrs: nounwind readnone
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declare void @llvm.dbg.declare(metadata, metadata) #1
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define internal void @_GLOBAL__I_a() section ".text.startup" {
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entry:
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call void @__cxx_global_var_init(), !dbg !32
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ret void, !dbg !32
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}
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attributes #0 = { nounwind uwtable "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "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 = !{!23, !24}
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!llvm.ident = !{!25}
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!0 = metadata !{i32 786449, metadata !1, i32 4, metadata !"clang version 3.5 (trunk 199923) (llvm/trunk 199940)", i1 false, metadata !"", i32 0, metadata !2, metadata !3, metadata !13, metadata !21, metadata !2, metadata !""} ; [ DW_TAG_compile_unit ] [/usr/local/google/home/echristo/tmp/baz.cpp] [DW_LANG_C_plus_plus]
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!1 = metadata !{metadata !"baz.cpp", metadata !"/usr/local/google/home/echristo/tmp"}
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!2 = metadata !{i32 0}
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!3 = metadata !{metadata !4}
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!4 = metadata !{i32 786434, metadata !1, null, metadata !"A", i32 1, i64 32, i64 32, i32 0, i32 0, null, metadata !5, i32 0, null, null, metadata !"_ZTS1A"} ; [ DW_TAG_class_type ] [A] [line 1, size 32, align 32, offset 0] [def] [from ]
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!5 = metadata !{metadata !6, metadata !8}
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!6 = metadata !{i32 786445, metadata !1, metadata !"_ZTS1A", metadata !"a", i32 5, i64 32, i64 32, i64 0, i32 1, metadata !7} ; [ DW_TAG_member ] [a] [line 5, size 32, align 32, offset 0] [private] [from int]
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!7 = metadata !{i32 786468, null, null, metadata !"int", i32 0, i64 32, i64 32, i64 0, i32 0, i32 5} ; [ DW_TAG_base_type ] [int] [line 0, size 32, align 32, offset 0, enc DW_ATE_signed]
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!8 = metadata !{i32 786478, metadata !1, metadata !"_ZTS1A", metadata !"A", metadata !"A", metadata !"", i32 3, metadata !9, i1 false, i1 false, i32 0, i32 0, null, i32 256, i1 false, null, null, i32 0, metadata !12, i32 3} ; [ DW_TAG_subprogram ] [line 3] [A]
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!9 = metadata !{i32 786453, i32 0, null, metadata !"", i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !10, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
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!10 = metadata !{null, metadata !11, metadata !7}
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!11 = metadata !{i32 786447, null, null, metadata !"", i32 0, i64 64, i64 64, i64 0, i32 1088, metadata !"_ZTS1A"} ; [ DW_TAG_pointer_type ] [line 0, size 64, align 64, offset 0] [artificial] [from _ZTS1A]
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!12 = metadata !{i32 786468}
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!13 = metadata !{metadata !14, metadata !18, metadata !19}
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!14 = metadata !{i32 786478, metadata !1, metadata !15, metadata !"__cxx_global_var_init", metadata !"__cxx_global_var_init", metadata !"", i32 8, metadata !16, i1 true, i1 true, i32 0, i32 0, null, i32 256, i1 false, void ()* @__cxx_global_var_init, null, null, metadata !2, i32 8} ; [ DW_TAG_subprogram ] [line 8] [local] [def] [__cxx_global_var_init]
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!15 = metadata !{i32 786473, metadata !1} ; [ DW_TAG_file_type ] [/usr/local/google/home/echristo/tmp/baz.cpp]
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!16 = metadata !{i32 786453, i32 0, null, metadata !"", i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !17, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
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!17 = metadata !{null}
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!18 = metadata !{i32 786478, metadata !1, metadata !"_ZTS1A", metadata !"A", metadata !"A", metadata !"_ZN1AC2Ei", i32 3, metadata !9, i1 false, i1 true, i32 0, i32 0, null, i32 256, i1 false, void (%class.A*, i32)* @_ZN1AC2Ei, null, metadata !8, metadata !2, i32 3} ; [ DW_TAG_subprogram ] [line 3] [def] [A]
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!19 = metadata !{i32 786478, metadata !1, metadata !15, metadata !"", metadata !"", metadata !"_GLOBAL__I_a", i32 3, metadata !20, i1 true, i1 true, i32 0, i32 0, null, i32 64, i1 false, void ()* @_GLOBAL__I_a, null, null, metadata !2, i32 3} ; [ DW_TAG_subprogram ] [line 3] [local] [def]
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!20 = metadata !{i32 786453, i32 0, null, metadata !"", i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !2, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
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!21 = metadata !{metadata !22}
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!22 = metadata !{i32 786484, i32 0, null, metadata !"a", metadata !"a", metadata !"", metadata !15, i32 8, metadata !4, i32 0, i32 1, %class.A* @a, null} ; [ DW_TAG_variable ] [a] [line 8] [def]
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!23 = metadata !{i32 2, metadata !"Dwarf Version", i32 4}
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!24 = metadata !{i32 1, metadata !"Debug Info Version", i32 1}
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!25 = metadata !{metadata !"clang version 3.5 (trunk 199923) (llvm/trunk 199940)"}
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!26 = metadata !{i32 8, i32 0, metadata !14, null} ; [ DW_TAG_imported_declaration ]
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!27 = metadata !{i32 786689, metadata !18, metadata !"this", null, i32 16777216, metadata !28, i32 1088, i32 0} ; [ DW_TAG_arg_variable ] [this] [line 0]
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!28 = metadata !{i32 786447, null, null, metadata !"", i32 0, i64 64, i64 64, i64 0, i32 0, metadata !"_ZTS1A"} ; [ DW_TAG_pointer_type ] [line 0, size 64, align 64, offset 0] [from _ZTS1A]
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!29 = metadata !{i32 0, i32 0, metadata !18, null}
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!30 = metadata !{i32 786689, metadata !18, metadata !"i", metadata !15, i32 33554435, metadata !7, i32 0, i32 0} ; [ DW_TAG_arg_variable ] [i] [line 3]
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!31 = metadata !{i32 3, i32 0, metadata !18, null}
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!32 = metadata !{i32 3, i32 0, metadata !19, null}
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