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//=- FunctionPropertiesAnalysis.h - Function Properties Analysis --*- C++ -*-=//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This file defines the FunctionPropertiesInfo and FunctionPropertiesAnalysis
// classes used to extract function properties.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_ANALYSIS_FUNCTIONPROPERTIESANALYSIS_H
#define LLVM_ANALYSIS_FUNCTIONPROPERTIESANALYSIS_H
#include "llvm/Analysis/LoopInfo.h"
#include "llvm/IR/PassManager.h"
namespace llvm {
class Function;
class FunctionPropertiesInfo {
public:
static FunctionPropertiesInfo getFunctionPropertiesInfo(const Function &F,
const LoopInfo &LI);
void print(raw_ostream &OS) const;
/// Number of basic blocks
int64_t BasicBlockCount = 0;
/// Number of blocks reached from a conditional instruction, or that are
/// 'cases' of a SwitchInstr.
// FIXME: We may want to replace this with a more meaningful metric, like
// number of conditionally executed blocks:
// 'if (a) s();' would be counted here as 2 blocks, just like
// 'if (a) s(); else s2(); s3();' would.
int64_t BlocksReachedFromConditionalInstruction = 0;
/// Number of uses of this function, plus 1 if the function is callable
/// outside the module.
int64_t Uses = 0;
/// Number of direct calls made from this function to other functions
/// defined in this module.
int64_t DirectCallsToDefinedFunctions = 0;
// Load Instruction Count
int64_t LoadInstCount = 0;
// Store Instruction Count
int64_t StoreInstCount = 0;
// Maximum Loop Depth in the Function
int64_t MaxLoopDepth = 0;
// Number of Top Level Loops in the Function
int64_t TopLevelLoopCount = 0;
};
// Analysis pass
class FunctionPropertiesAnalysis
: public AnalysisInfoMixin<FunctionPropertiesAnalysis> {
public:
static AnalysisKey Key;
using Result = FunctionPropertiesInfo;
Result run(Function &F, FunctionAnalysisManager &FAM);
};
/// Printer pass for the FunctionPropertiesAnalysis results.
class FunctionPropertiesPrinterPass
: public PassInfoMixin<FunctionPropertiesPrinterPass> {
raw_ostream &OS;
public:
explicit FunctionPropertiesPrinterPass(raw_ostream &OS) : OS(OS) {}
PreservedAnalyses run(Function &F, FunctionAnalysisManager &AM);
};
} // namespace llvm
#endif // LLVM_ANALYSIS_FUNCTIONPROPERTIESANALYSIS_H
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