forked from OSchip/llvm-project
DebugInfo: Split DebugLocEntry into its own file.
It seems big enough that it deserves its own file - but it is header only, so there's no need for another cpp file, etc. llvm-svn: 205360
This commit is contained in:
David Blaikie
parent
e044904301
commit
1275e4f026
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@ -0,0 +1,112 @@
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//===-- llvm/CodeGen/DebugLocEntry.h - Entry in debug_loc list -*- C++ -*--===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#ifndef CODEGEN_ASMPRINTER_DEBUGLOCENTRY_H__
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#define CODEGEN_ASMPRINTER_DEBUGLOCENTRY_H__
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#include "llvm/IR/Constants.h"
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#include "llvm/MC/MachineLocation.h"
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#include "llvm/MC/MCSymbol.h"
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namespace llvm {
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class DwarfCompileUnit;
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class MDNode;
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/// \brief This struct describes location entries emitted in the .debug_loc
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/// section.
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class DebugLocEntry {
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// Begin and end symbols for the address range that this location is valid.
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const MCSymbol *Begin;
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const MCSymbol *End;
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// Type of entry that this represents.
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enum EntryType { E_Location, E_Integer, E_ConstantFP, E_ConstantInt };
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enum EntryType EntryKind;
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union {
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int64_t Int;
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const ConstantFP *CFP;
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const ConstantInt *CIP;
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} Constants;
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// The location in the machine frame.
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MachineLocation Loc;
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// The variable to which this location entry corresponds.
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const MDNode *Variable;
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// The compile unit to which this location entry is referenced by.
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const DwarfCompileUnit *Unit;
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public:
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DebugLocEntry() : Begin(0), End(0), Variable(0), Unit(0) {
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Constants.Int = 0;
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}
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DebugLocEntry(const MCSymbol *B, const MCSymbol *E, MachineLocation &L,
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const MDNode *V, const DwarfCompileUnit *U)
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: Begin(B), End(E), Loc(L), Variable(V), Unit(U) {
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Constants.Int = 0;
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EntryKind = E_Location;
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}
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DebugLocEntry(const MCSymbol *B, const MCSymbol *E, int64_t i,
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const DwarfCompileUnit *U)
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: Begin(B), End(E), Variable(0), Unit(U) {
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Constants.Int = i;
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EntryKind = E_Integer;
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}
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DebugLocEntry(const MCSymbol *B, const MCSymbol *E, const ConstantFP *FPtr,
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const DwarfCompileUnit *U)
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: Begin(B), End(E), Variable(0), Unit(U) {
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Constants.CFP = FPtr;
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EntryKind = E_ConstantFP;
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}
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DebugLocEntry(const MCSymbol *B, const MCSymbol *E, const ConstantInt *IPtr,
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const DwarfCompileUnit *U)
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: Begin(B), End(E), Variable(0), Unit(U) {
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Constants.CIP = IPtr;
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EntryKind = E_ConstantInt;
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}
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/// \brief Empty entries are also used as a trigger to emit temp label. Such
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/// labels are referenced is used to find debug_loc offset for a given DIE.
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bool isEmpty() const { return Begin == 0 && End == 0; }
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bool Merge(const DebugLocEntry &Next) {
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if (End != Next.Begin)
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return false;
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if (EntryKind != Next.EntryKind)
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return false;
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switch (EntryKind) {
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case E_Location:
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if (Loc != Next.Loc) return false;
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case E_Integer:
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if (Constants.Int != Next.Constants.Int) return false;
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case E_ConstantFP:
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if (Constants.CFP != Next.Constants.CFP) return false;
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case E_ConstantInt:
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if (Constants.CIP != Next.Constants.CIP) return false;
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}
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return true;
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}
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bool isLocation() const { return EntryKind == E_Location; }
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bool isInt() const { return EntryKind == E_Integer; }
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bool isConstantFP() const { return EntryKind == E_ConstantFP; }
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bool isConstantInt() const { return EntryKind == E_ConstantInt; }
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int64_t getInt() const { return Constants.Int; }
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const ConstantFP *getConstantFP() const { return Constants.CFP; }
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const ConstantInt *getConstantInt() const { return Constants.CIP; }
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const MDNode *getVariable() const { return Variable; }
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const MCSymbol *getBeginSym() const { return Begin; }
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const MCSymbol *getEndSym() const { return End; }
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const DwarfCompileUnit *getCU() const { return Unit; }
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MachineLocation getLoc() const { return Loc; }
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};
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}
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#endif
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@ -16,6 +16,7 @@
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#include "AsmPrinterHandler.h"
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#include "DIE.h"
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#include "DebugLocEntry.h"
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#include "llvm/ADT/DenseMap.h"
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#include "llvm/ADT/MapVector.h"
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#include "llvm/ADT/SmallPtrSet.h"
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@ -58,91 +59,6 @@ public:
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MCSymbol *getLabel() const { return Label; }
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};
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/// \brief This struct describes location entries emitted in the .debug_loc
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/// section.
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class DebugLocEntry {
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// Begin and end symbols for the address range that this location is valid.
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const MCSymbol *Begin;
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const MCSymbol *End;
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// Type of entry that this represents.
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enum EntryType { E_Location, E_Integer, E_ConstantFP, E_ConstantInt };
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enum EntryType EntryKind;
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union {
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int64_t Int;
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const ConstantFP *CFP;
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const ConstantInt *CIP;
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} Constants;
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// The location in the machine frame.
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MachineLocation Loc;
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// The variable to which this location entry corresponds.
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const MDNode *Variable;
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// The compile unit to which this location entry is referenced by.
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const DwarfCompileUnit *Unit;
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public:
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DebugLocEntry() : Begin(0), End(0), Variable(0), Unit(0) {
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Constants.Int = 0;
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}
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DebugLocEntry(const MCSymbol *B, const MCSymbol *E, MachineLocation &L,
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const MDNode *V, const DwarfCompileUnit *U)
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: Begin(B), End(E), Loc(L), Variable(V), Unit(U) {
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Constants.Int = 0;
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EntryKind = E_Location;
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}
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DebugLocEntry(const MCSymbol *B, const MCSymbol *E, int64_t i,
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const DwarfCompileUnit *U)
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: Begin(B), End(E), Variable(0), Unit(U) {
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Constants.Int = i;
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EntryKind = E_Integer;
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}
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DebugLocEntry(const MCSymbol *B, const MCSymbol *E, const ConstantFP *FPtr,
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const DwarfCompileUnit *U)
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: Begin(B), End(E), Variable(0), Unit(U) {
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Constants.CFP = FPtr;
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EntryKind = E_ConstantFP;
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}
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DebugLocEntry(const MCSymbol *B, const MCSymbol *E, const ConstantInt *IPtr,
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const DwarfCompileUnit *U)
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: Begin(B), End(E), Variable(0), Unit(U) {
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Constants.CIP = IPtr;
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EntryKind = E_ConstantInt;
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}
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/// \brief Empty entries are also used as a trigger to emit temp label. Such
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/// labels are referenced is used to find debug_loc offset for a given DIE.
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bool isEmpty() const { return Begin == 0 && End == 0; }
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bool Merge(const DebugLocEntry &Next) {
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if (Begin &&
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Loc == Next.Loc &&
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EntryKind == Next.EntryKind &&
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(!isInt() || getInt() == Next.getInt()) &&
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(!isConstantInt() || getConstantInt() == Next.getConstantInt()) &&
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(!isConstantFP() || getConstantFP() == Next.getConstantFP()) &&
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End == Next.Begin) {
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End = Next.End;
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return true;
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}
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return false;
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}
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bool isLocation() const { return EntryKind == E_Location; }
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bool isInt() const { return EntryKind == E_Integer; }
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bool isConstantFP() const { return EntryKind == E_ConstantFP; }
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bool isConstantInt() const { return EntryKind == E_ConstantInt; }
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int64_t getInt() const { return Constants.Int; }
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const ConstantFP *getConstantFP() const { return Constants.CFP; }
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const ConstantInt *getConstantInt() const { return Constants.CIP; }
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const MDNode *getVariable() const { return Variable; }
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const MCSymbol *getBeginSym() const { return Begin; }
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const MCSymbol *getEndSym() const { return End; }
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const DwarfCompileUnit *getCU() const { return Unit; }
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MachineLocation getLoc() const { return Loc; }
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};
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//===----------------------------------------------------------------------===//
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/// \brief This class is used to track local variable information.
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class DbgVariable {
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