/usr/include/llvm-6.0/llvm/CodeGen/RegisterUsageInfo.h is in llvm-6.0-dev 1:6.0-1ubuntu2.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 | //==- RegisterUsageInfo.h - Register Usage Informartion Storage --*- C++ -*-==//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
/// \file
/// This pass is required to take advantage of the interprocedural register
/// allocation infrastructure.
///
/// This pass is simple immutable pass which keeps RegMasks (calculated based on
/// actual register allocation) for functions in a module and provides simple
/// API to query this information.
///
//===----------------------------------------------------------------------===//
#ifndef LLVM_CODEGEN_PHYSICALREGISTERUSAGEINFO_H
#define LLVM_CODEGEN_PHYSICALREGISTERUSAGEINFO_H
#include "llvm/ADT/DenseMap.h"
#include "llvm/IR/Instructions.h"
#include "llvm/Pass.h"
#include <cstdint>
#include <vector>
namespace llvm {
class Function;
class TargetMachine;
class PhysicalRegisterUsageInfo : public ImmutablePass {
virtual void anchor();
public:
static char ID;
PhysicalRegisterUsageInfo() : ImmutablePass(ID) {
PassRegistry &Registry = *PassRegistry::getPassRegistry();
initializePhysicalRegisterUsageInfoPass(Registry);
}
void getAnalysisUsage(AnalysisUsage &AU) const override {
AU.setPreservesAll();
}
/// To set TargetMachine *, which is used to print
/// analysis when command line option -print-regusage is used.
void setTargetMachine(const TargetMachine *TM_) { TM = TM_; }
bool doInitialization(Module &M) override;
bool doFinalization(Module &M) override;
/// To store RegMask for given Function *.
void storeUpdateRegUsageInfo(const Function *FP,
std::vector<uint32_t> RegMask);
/// To query stored RegMask for given Function *, it will return nullptr if
/// function is not known.
const std::vector<uint32_t> *getRegUsageInfo(const Function *FP);
void print(raw_ostream &OS, const Module *M = nullptr) const override;
private:
/// A Dense map from Function * to RegMask.
/// In RegMask 0 means register used (clobbered) by function.
/// and 1 means content of register will be preserved around function call.
DenseMap<const Function *, std::vector<uint32_t>> RegMasks;
const TargetMachine *TM;
};
} // end namespace llvm
#endif // LLVM_CODEGEN_PHYSICALREGISTERUSAGEINFO_H
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