You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
60 lines
2.2 KiB
60 lines
2.2 KiB
//===-- llvm/CodeGen/AsmPrinter/DbgValueHistoryCalculator.h ----*- C++ -*--===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef LLVM_LIB_CODEGEN_ASMPRINTER_DBGVALUEHISTORYCALCULATOR_H
|
|
#define LLVM_LIB_CODEGEN_ASMPRINTER_DBGVALUEHISTORYCALCULATOR_H
|
|
|
|
#include "llvm/ADT/MapVector.h"
|
|
#include "llvm/ADT/SmallVector.h"
|
|
#include "llvm/IR/DebugInfoMetadata.h"
|
|
|
|
namespace llvm {
|
|
|
|
class MachineFunction;
|
|
class MachineInstr;
|
|
class TargetRegisterInfo;
|
|
|
|
// For each user variable, keep a list of instruction ranges where this variable
|
|
// is accessible. The variables are listed in order of appearance.
|
|
class DbgValueHistoryMap {
|
|
// Each instruction range starts with a DBG_VALUE instruction, specifying the
|
|
// location of a variable, which is assumed to be valid until the end of the
|
|
// range. If end is not specified, location is valid until the start
|
|
// instruction of the next instruction range, or until the end of the
|
|
// function.
|
|
public:
|
|
typedef std::pair<const MachineInstr *, const MachineInstr *> InstrRange;
|
|
typedef SmallVector<InstrRange, 4> InstrRanges;
|
|
typedef std::pair<const DILocalVariable *, const DILocation *>
|
|
InlinedVariable;
|
|
typedef MapVector<InlinedVariable, InstrRanges> InstrRangesMap;
|
|
|
|
private:
|
|
InstrRangesMap VarInstrRanges;
|
|
|
|
public:
|
|
void startInstrRange(InlinedVariable Var, const MachineInstr &MI);
|
|
void endInstrRange(InlinedVariable Var, const MachineInstr &MI);
|
|
// Returns register currently describing @Var. If @Var is currently
|
|
// unaccessible or is not described by a register, returns 0.
|
|
unsigned getRegisterForVar(InlinedVariable Var) const;
|
|
|
|
bool empty() const { return VarInstrRanges.empty(); }
|
|
void clear() { VarInstrRanges.clear(); }
|
|
InstrRangesMap::const_iterator begin() const { return VarInstrRanges.begin(); }
|
|
InstrRangesMap::const_iterator end() const { return VarInstrRanges.end(); }
|
|
};
|
|
|
|
void calculateDbgValueHistory(const MachineFunction *MF,
|
|
const TargetRegisterInfo *TRI,
|
|
DbgValueHistoryMap &Result);
|
|
}
|
|
|
|
#endif
|