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Imported Upstream version 5.18.0.167

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Former-commit-id: 289509151e0fee68a1b591a20c9f109c3c789d3a
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Xamarin Public Jenkins (auto-signing)
2018-10-20 08:25:10 +00:00
parent e19d552987
commit b084638f15
28489 changed files with 184 additions and 3866856 deletions
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63
external/llvm/lib/CodeGen/AsmPrinter/DbgValueHistoryCalculator.h vendored
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//===- 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"
#include <utility>
namespace llvm {
class DILocalVariable;
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:
using InstrRange = std::pair<const MachineInstr *, const MachineInstr *>;
using InstrRanges = SmallVector<InstrRange, 4>;
using InlinedVariable =
std::pair<const DILocalVariable *, const DILocation *>;
using InstrRangesMap = MapVector<InlinedVariable, InstrRanges>;
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);
} // end namespace llvm
#endif // LLVM_LIB_CODEGEN_ASMPRINTER_DBGVALUEHISTORYCALCULATOR_H