HeatUtils.h

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//===-- HeatUtils.h - Utility for printing heat colors ----------*- 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
//
//===----------------------------------------------------------------------===//
//
// Utility for printing heat colors based on profiling information.
//
//===----------------------------------------------------------------------===//
 
#ifndef LLVM_ANALYSIS_HEATUTILS_H
#define LLVM_ANALYSIS_HEATUTILS_H
 
#include "llvm/Support/Compiler.h"
#include <cstdint>
#include <string>
 
namespace llvm {
 
class BlockFrequencyInfo;
class Function;
 
// Returns number of calls of calledFunction by callerFunction.
LLVM_ABI uint64_t getNumOfCalls(Function &callerFunction,
                                Function &calledFunction);
 
// Returns the maximum frequency of a BB in a function.
LLVM_ABI uint64_t getMaxFreq(const Function &F, const BlockFrequencyInfo *BFI);
 
// Calculates heat color based on current and maximum frequencies.
LLVM_ABI std::string getHeatColor(uint64_t freq, uint64_t maxFreq);
 
// Calculates heat color based on percent of "hotness".
LLVM_ABI std::string getHeatColor(double percent);
 
} // namespace llvm
 
#endif