1 //===-- HeatUtils.h - Utility for printing heat colors ----------*- C++ -*-===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 // 10 // Utility for printing heat colors based on profiling information. 11 // 12 //===----------------------------------------------------------------------===// 13 14 #ifndef LLVM_ANALYSIS_HEATUTILS_H 15 #define LLVM_ANALYSIS_HEATUTILS_H 16 17 #include <cstdint> 18 #include <string> 19 20 namespace llvm { 21 22 class BlockFrequencyInfo; 23 class Function; 24 25 // Returns number of calls of calledFunction by callerFunction. 26 uint64_t 27 getNumOfCalls(Function &callerFunction, Function &calledFunction); 28 29 // Returns the maximum frequency of a BB in a function. 30 uint64_t getMaxFreq(const Function &F, const BlockFrequencyInfo *BFI); 31 32 // Calculates heat color based on current and maximum frequencies. 33 std::string getHeatColor(uint64_t freq, uint64_t maxFreq); 34 35 // Calculates heat color based on percent of "hotness". 36 std::string getHeatColor(double percent); 37 38 } // namespace llvm 39 40 #endif 41