55 lines · cpp
1//===- TGTimer.cpp - TableGen Timer implementation --------------*- C++ -*-===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8//9// Implement the tablegen timer class.10//11//===----------------------------------------------------------------------===//12 13#include "llvm/TableGen/TGTimer.h"14using namespace llvm;15 16// These functions implement the phase timing facility. Starting a timer17// when one is already running stops the running one.18void TGTimer::startTimer(StringRef Name) {19 if (!TimingGroup)20 return;21 if (LastTimer && LastTimer->isRunning()) {22 LastTimer->stopTimer();23 if (BackendTimer) {24 LastTimer->clear();25 BackendTimer = false;26 }27 }28 29 LastTimer = std::make_unique<Timer>("", Name, *TimingGroup);30 LastTimer->startTimer();31}32 33void TGTimer::stopTimer() {34 if (!TimingGroup)35 return;36 37 assert(LastTimer && "No phase timer was started");38 LastTimer->stopTimer();39}40 41void TGTimer::startBackendTimer(StringRef Name) {42 if (!TimingGroup)43 return;44 45 startTimer(Name);46 BackendTimer = true;47}48 49void TGTimer::stopBackendTimer() {50 if (!TimingGroup || !BackendTimer)51 return;52 stopTimer();53 BackendTimer = false;54}55