15ffd83dbSDimitry Andric //===-- HeatUtils.cpp - Utility for printing heat colors --------*- C++ -*-===// 25ffd83dbSDimitry Andric // 3*349cc55cSDimitry Andric // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4*349cc55cSDimitry Andric // See https://llvm.org/LICENSE.txt for license information. 5*349cc55cSDimitry Andric // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 65ffd83dbSDimitry Andric // 75ffd83dbSDimitry Andric //===----------------------------------------------------------------------===// 85ffd83dbSDimitry Andric // 95ffd83dbSDimitry Andric // Utility for printing heat colors based on heuristics or profiling 105ffd83dbSDimitry Andric // information. 115ffd83dbSDimitry Andric // 125ffd83dbSDimitry Andric //===----------------------------------------------------------------------===// 135ffd83dbSDimitry Andric 145ffd83dbSDimitry Andric #include "llvm/Analysis/HeatUtils.h" 155ffd83dbSDimitry Andric #include "llvm/Analysis/BlockFrequencyInfo.h" 165ffd83dbSDimitry Andric #include "llvm/IR/Instructions.h" 175ffd83dbSDimitry Andric 185ffd83dbSDimitry Andric namespace llvm { 195ffd83dbSDimitry Andric 205ffd83dbSDimitry Andric static const unsigned heatSize = 100; 215ffd83dbSDimitry Andric static const char heatPalette[heatSize][8] = { 225ffd83dbSDimitry Andric "#3d50c3", "#4055c8", "#4358cb", "#465ecf", "#4961d2", "#4c66d6", "#4f69d9", 235ffd83dbSDimitry Andric "#536edd", "#5572df", "#5977e3", "#5b7ae5", "#5f7fe8", "#6282ea", "#6687ed", 245ffd83dbSDimitry Andric "#6a8bef", "#6c8ff1", "#7093f3", "#7396f5", "#779af7", "#7a9df8", "#7ea1fa", 255ffd83dbSDimitry Andric "#81a4fb", "#85a8fc", "#88abfd", "#8caffe", "#8fb1fe", "#93b5fe", "#96b7ff", 265ffd83dbSDimitry Andric "#9abbff", "#9ebeff", "#a1c0ff", "#a5c3fe", "#a7c5fe", "#abc8fd", "#aec9fc", 275ffd83dbSDimitry Andric "#b2ccfb", "#b5cdfa", "#b9d0f9", "#bbd1f8", "#bfd3f6", "#c1d4f4", "#c5d6f2", 285ffd83dbSDimitry Andric "#c7d7f0", "#cbd8ee", "#cedaeb", "#d1dae9", "#d4dbe6", "#d6dce4", "#d9dce1", 295ffd83dbSDimitry Andric "#dbdcde", "#dedcdb", "#e0dbd8", "#e3d9d3", "#e5d8d1", "#e8d6cc", "#ead5c9", 305ffd83dbSDimitry Andric "#ecd3c5", "#eed0c0", "#efcebd", "#f1ccb8", "#f2cab5", "#f3c7b1", "#f4c5ad", 315ffd83dbSDimitry Andric "#f5c1a9", "#f6bfa6", "#f7bca1", "#f7b99e", "#f7b599", "#f7b396", "#f7af91", 325ffd83dbSDimitry Andric "#f7ac8e", "#f7a889", "#f6a385", "#f5a081", "#f59c7d", "#f4987a", "#f39475", 335ffd83dbSDimitry Andric "#f29072", "#f08b6e", "#ef886b", "#ed8366", "#ec7f63", "#e97a5f", "#e8765c", 345ffd83dbSDimitry Andric "#e57058", "#e36c55", "#e16751", "#de614d", "#dc5d4a", "#d85646", "#d65244", 355ffd83dbSDimitry Andric "#d24b40", "#d0473d", "#cc403a", "#ca3b37", "#c53334", "#c32e31", "#be242e", 365ffd83dbSDimitry Andric "#bb1b2c", "#b70d28"}; 375ffd83dbSDimitry Andric 385ffd83dbSDimitry Andric uint64_t 395ffd83dbSDimitry Andric getNumOfCalls(Function &callerFunction, Function &calledFunction) { 405ffd83dbSDimitry Andric uint64_t counter = 0; 415ffd83dbSDimitry Andric for (User *U : calledFunction.users()) { 425ffd83dbSDimitry Andric if (auto CI = dyn_cast<CallInst>(U)) { 435ffd83dbSDimitry Andric if (CI->getCaller() == (&callerFunction)) { 445ffd83dbSDimitry Andric counter += 1; 455ffd83dbSDimitry Andric } 465ffd83dbSDimitry Andric } 475ffd83dbSDimitry Andric } 485ffd83dbSDimitry Andric return counter; 495ffd83dbSDimitry Andric } 505ffd83dbSDimitry Andric 515ffd83dbSDimitry Andric uint64_t getMaxFreq(const Function &F, const BlockFrequencyInfo *BFI) { 525ffd83dbSDimitry Andric uint64_t maxFreq = 0; 535ffd83dbSDimitry Andric for (const BasicBlock &BB : F) { 545ffd83dbSDimitry Andric uint64_t freqVal = BFI->getBlockFreq(&BB).getFrequency(); 555ffd83dbSDimitry Andric if (freqVal >= maxFreq) 565ffd83dbSDimitry Andric maxFreq = freqVal; 575ffd83dbSDimitry Andric } 585ffd83dbSDimitry Andric return maxFreq; 595ffd83dbSDimitry Andric } 605ffd83dbSDimitry Andric 615ffd83dbSDimitry Andric std::string getHeatColor(uint64_t freq, uint64_t maxFreq) { 625ffd83dbSDimitry Andric if (freq > maxFreq) 635ffd83dbSDimitry Andric freq = maxFreq; 645ffd83dbSDimitry Andric double percent = (freq > 0) ? log2(double(freq)) / log2(maxFreq) : 0; 655ffd83dbSDimitry Andric return getHeatColor(percent); 665ffd83dbSDimitry Andric } 675ffd83dbSDimitry Andric 685ffd83dbSDimitry Andric std::string getHeatColor(double percent) { 695ffd83dbSDimitry Andric if (percent > 1.0) 705ffd83dbSDimitry Andric percent = 1.0; 715ffd83dbSDimitry Andric if (percent < 0.0) 725ffd83dbSDimitry Andric percent = 0.0; 735ffd83dbSDimitry Andric unsigned colorId = unsigned(round(percent * (heatSize - 1.0))); 745ffd83dbSDimitry Andric return heatPalette[colorId]; 755ffd83dbSDimitry Andric } 765ffd83dbSDimitry Andric 775ffd83dbSDimitry Andric } // namespace llvm 78