diff --git a/lib/CodeGen/AsmPrinter/DebugLocEntry.h b/lib/CodeGen/AsmPrinter/DebugLocEntry.h new file mode 100644 index 00000000000..e62897e86a3 --- /dev/null +++ b/lib/CodeGen/AsmPrinter/DebugLocEntry.h @@ -0,0 +1,112 @@ +//===-- llvm/CodeGen/DebugLocEntry.h - Entry in debug_loc list -*- C++ -*--===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// + +#ifndef CODEGEN_ASMPRINTER_DEBUGLOCENTRY_H__ +#define CODEGEN_ASMPRINTER_DEBUGLOCENTRY_H__ +#include "llvm/IR/Constants.h" +#include "llvm/MC/MachineLocation.h" +#include "llvm/MC/MCSymbol.h" + +namespace llvm { +class DwarfCompileUnit; +class MDNode; +/// \brief This struct describes location entries emitted in the .debug_loc +/// section. +class DebugLocEntry { + // Begin and end symbols for the address range that this location is valid. + const MCSymbol *Begin; + const MCSymbol *End; + + // Type of entry that this represents. + enum EntryType { E_Location, E_Integer, E_ConstantFP, E_ConstantInt }; + enum EntryType EntryKind; + + union { + int64_t Int; + const ConstantFP *CFP; + const ConstantInt *CIP; + } Constants; + + // The location in the machine frame. + MachineLocation Loc; + + // The variable to which this location entry corresponds. + const MDNode *Variable; + + // The compile unit to which this location entry is referenced by. + const DwarfCompileUnit *Unit; + +public: + DebugLocEntry() : Begin(0), End(0), Variable(0), Unit(0) { + Constants.Int = 0; + } + DebugLocEntry(const MCSymbol *B, const MCSymbol *E, MachineLocation &L, + const MDNode *V, const DwarfCompileUnit *U) + : Begin(B), End(E), Loc(L), Variable(V), Unit(U) { + Constants.Int = 0; + EntryKind = E_Location; + } + DebugLocEntry(const MCSymbol *B, const MCSymbol *E, int64_t i, + const DwarfCompileUnit *U) + : Begin(B), End(E), Variable(0), Unit(U) { + Constants.Int = i; + EntryKind = E_Integer; + } + DebugLocEntry(const MCSymbol *B, const MCSymbol *E, const ConstantFP *FPtr, + const DwarfCompileUnit *U) + : Begin(B), End(E), Variable(0), Unit(U) { + Constants.CFP = FPtr; + EntryKind = E_ConstantFP; + } + DebugLocEntry(const MCSymbol *B, const MCSymbol *E, const ConstantInt *IPtr, + const DwarfCompileUnit *U) + : Begin(B), End(E), Variable(0), Unit(U) { + Constants.CIP = IPtr; + EntryKind = E_ConstantInt; + } + + /// \brief Empty entries are also used as a trigger to emit temp label. Such + /// labels are referenced is used to find debug_loc offset for a given DIE. + bool isEmpty() const { return Begin == 0 && End == 0; } + bool Merge(const DebugLocEntry &Next) { + if (End != Next.Begin) + return false; + + if (EntryKind != Next.EntryKind) + return false; + + switch (EntryKind) { + case E_Location: + if (Loc != Next.Loc) return false; + case E_Integer: + if (Constants.Int != Next.Constants.Int) return false; + case E_ConstantFP: + if (Constants.CFP != Next.Constants.CFP) return false; + case E_ConstantInt: + if (Constants.CIP != Next.Constants.CIP) return false; + } + + return true; + } + bool isLocation() const { return EntryKind == E_Location; } + bool isInt() const { return EntryKind == E_Integer; } + bool isConstantFP() const { return EntryKind == E_ConstantFP; } + bool isConstantInt() const { return EntryKind == E_ConstantInt; } + int64_t getInt() const { return Constants.Int; } + const ConstantFP *getConstantFP() const { return Constants.CFP; } + const ConstantInt *getConstantInt() const { return Constants.CIP; } + const MDNode *getVariable() const { return Variable; } + const MCSymbol *getBeginSym() const { return Begin; } + const MCSymbol *getEndSym() const { return End; } + const DwarfCompileUnit *getCU() const { return Unit; } + MachineLocation getLoc() const { return Loc; } +}; + +} +#endif diff --git a/lib/CodeGen/AsmPrinter/DwarfDebug.h b/lib/CodeGen/AsmPrinter/DwarfDebug.h index 23ab7f0287f..fcac25d5207 100644 --- a/lib/CodeGen/AsmPrinter/DwarfDebug.h +++ b/lib/CodeGen/AsmPrinter/DwarfDebug.h @@ -16,6 +16,7 @@ #include "AsmPrinterHandler.h" #include "DIE.h" +#include "DebugLocEntry.h" #include "llvm/ADT/DenseMap.h" #include "llvm/ADT/MapVector.h" #include "llvm/ADT/SmallPtrSet.h" @@ -58,91 +59,6 @@ public: MCSymbol *getLabel() const { return Label; } }; -/// \brief This struct describes location entries emitted in the .debug_loc -/// section. -class DebugLocEntry { - // Begin and end symbols for the address range that this location is valid. - const MCSymbol *Begin; - const MCSymbol *End; - - // Type of entry that this represents. - enum EntryType { E_Location, E_Integer, E_ConstantFP, E_ConstantInt }; - enum EntryType EntryKind; - - union { - int64_t Int; - const ConstantFP *CFP; - const ConstantInt *CIP; - } Constants; - - // The location in the machine frame. - MachineLocation Loc; - - // The variable to which this location entry corresponds. - const MDNode *Variable; - - // The compile unit to which this location entry is referenced by. - const DwarfCompileUnit *Unit; - -public: - DebugLocEntry() : Begin(0), End(0), Variable(0), Unit(0) { - Constants.Int = 0; - } - DebugLocEntry(const MCSymbol *B, const MCSymbol *E, MachineLocation &L, - const MDNode *V, const DwarfCompileUnit *U) - : Begin(B), End(E), Loc(L), Variable(V), Unit(U) { - Constants.Int = 0; - EntryKind = E_Location; - } - DebugLocEntry(const MCSymbol *B, const MCSymbol *E, int64_t i, - const DwarfCompileUnit *U) - : Begin(B), End(E), Variable(0), Unit(U) { - Constants.Int = i; - EntryKind = E_Integer; - } - DebugLocEntry(const MCSymbol *B, const MCSymbol *E, const ConstantFP *FPtr, - const DwarfCompileUnit *U) - : Begin(B), End(E), Variable(0), Unit(U) { - Constants.CFP = FPtr; - EntryKind = E_ConstantFP; - } - DebugLocEntry(const MCSymbol *B, const MCSymbol *E, const ConstantInt *IPtr, - const DwarfCompileUnit *U) - : Begin(B), End(E), Variable(0), Unit(U) { - Constants.CIP = IPtr; - EntryKind = E_ConstantInt; - } - - /// \brief Empty entries are also used as a trigger to emit temp label. Such - /// labels are referenced is used to find debug_loc offset for a given DIE. - bool isEmpty() const { return Begin == 0 && End == 0; } - bool Merge(const DebugLocEntry &Next) { - if (Begin && - Loc == Next.Loc && - EntryKind == Next.EntryKind && - (!isInt() || getInt() == Next.getInt()) && - (!isConstantInt() || getConstantInt() == Next.getConstantInt()) && - (!isConstantFP() || getConstantFP() == Next.getConstantFP()) && - End == Next.Begin) { - End = Next.End; - return true; - } - return false; - } - bool isLocation() const { return EntryKind == E_Location; } - bool isInt() const { return EntryKind == E_Integer; } - bool isConstantFP() const { return EntryKind == E_ConstantFP; } - bool isConstantInt() const { return EntryKind == E_ConstantInt; } - int64_t getInt() const { return Constants.Int; } - const ConstantFP *getConstantFP() const { return Constants.CFP; } - const ConstantInt *getConstantInt() const { return Constants.CIP; } - const MDNode *getVariable() const { return Variable; } - const MCSymbol *getBeginSym() const { return Begin; } - const MCSymbol *getEndSym() const { return End; } - const DwarfCompileUnit *getCU() const { return Unit; } - MachineLocation getLoc() const { return Loc; } -}; - //===----------------------------------------------------------------------===// /// \brief This class is used to track local variable information. class DbgVariable {