1 //===-- llvm/CodeGen/DwarfCompileUnit.h - Dwarf Compile Unit ---*- C++ -*--===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file contains support for writing dwarf compile unit.
12 //===----------------------------------------------------------------------===//
14 #ifndef LLVM_LIB_CODEGEN_ASMPRINTER_DWARFCOMPILEUNIT_H
15 #define LLVM_LIB_CODEGEN_ASMPRINTER_DWARFCOMPILEUNIT_H
17 #include "DwarfUnit.h"
18 #include "llvm/Support/Dwarf.h"
19 #include "llvm/ADT/StringRef.h"
20 #include "llvm/IR/DebugInfo.h"
31 class DwarfCompileUnit : public DwarfUnit {
32 /// The attribute index of DW_AT_stmt_list in the compile unit DIE, avoiding
33 /// the need to search for it in applyStmtList.
34 unsigned stmtListIndex;
37 DwarfCompileUnit(unsigned UID, DICompileUnit Node, AsmPrinter *A,
38 DwarfDebug *DW, DwarfFile *DWU);
40 void initStmtList(MCSymbol *DwarfLineSectionSym);
42 /// Apply the DW_AT_stmt_list from this compile unit to the specified DIE.
43 void applyStmtList(DIE &D);
45 /// getOrCreateGlobalVariableDIE - get or create global variable DIE.
46 DIE *getOrCreateGlobalVariableDIE(DIGlobalVariable GV);
48 /// addLabelAddress - Add a dwarf label attribute data and value using
49 /// either DW_FORM_addr or DW_FORM_GNU_addr_index.
50 void addLabelAddress(DIE &Die, dwarf::Attribute Attribute,
51 const MCSymbol *Label);
53 /// addLocalLabelAddress - Add a dwarf label attribute data and value using
54 /// DW_FORM_addr only.
55 void addLocalLabelAddress(DIE &Die, dwarf::Attribute Attribute,
56 const MCSymbol *Label);
58 /// addSectionDelta - Add a label delta attribute data and value.
59 void addSectionDelta(DIE &Die, dwarf::Attribute Attribute, const MCSymbol *Hi,
62 DwarfCompileUnit &getCU() override { return *this; }
64 unsigned getOrCreateSourceID(StringRef FileName, StringRef DirName) override;
66 /// addRange - Add an address range to the list of ranges for this unit.
67 void addRange(RangeSpan Range);
69 void attachLowHighPC(DIE &D, const MCSymbol *Begin, const MCSymbol *End);
71 /// addSectionLabel - Add a Dwarf section label attribute data and value.
73 void addSectionLabel(DIE &Die, dwarf::Attribute Attribute,
74 const MCSymbol *Label, const MCSymbol *Sec);
76 /// \brief Find DIE for the given subprogram and attach appropriate
77 /// DW_AT_low_pc and DW_AT_high_pc attributes. If there are global
78 /// variables in this scope then create and insert DIEs for these
80 DIE &updateSubprogramScopeDIE(DISubprogram SP);
82 void constructScopeDIE(LexicalScope *Scope,
83 SmallVectorImpl<std::unique_ptr<DIE>> &FinalChildren);
85 /// \brief A helper function to construct a RangeSpanList for a given
87 void addScopeRangeList(DIE &ScopeDIE,
88 const SmallVectorImpl<InsnRange> &Range);
90 void attachRangesOrLowHighPC(DIE &D,
91 const SmallVectorImpl<InsnRange> &Ranges);
93 /// \brief This scope represents inlined body of a function. Construct
94 /// DIE to represent this concrete inlined copy of the function.
95 std::unique_ptr<DIE> constructInlinedScopeDIE(LexicalScope *Scope);
98 } // end llvm namespace