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