4e069d9cf9
While BlockFrequency::operator+= is a very simple operation, it's definition is present in another TU which means that it doesn't get inlined in non-LTO builds. This means that there is some performance left on the table in those builds, as this operator is called many times. This patch moves that operator (and a few others) into the BlockFrequency.h header which gives a small speedup (~0.1%): https://llvm-compile-time-tracker.com/compare.php?from=6ee594be53e7efaa12086ad20f0d0268092a4c73&to=6ac6cd99e211fae5ae5de41ad608604aa22f1882&stat=instructions%3Au Differential Revision: https://reviews.llvm.org/D152781
39 lines
1.1 KiB
C++
39 lines
1.1 KiB
C++
//====--------------- lib/Support/BlockFrequency.cpp -----------*- 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 implements Block Frequency class.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/Support/BlockFrequency.h"
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#include "llvm/Support/BranchProbability.h"
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using namespace llvm;
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BlockFrequency &BlockFrequency::operator*=(BranchProbability Prob) {
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Frequency = Prob.scale(Frequency);
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return *this;
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}
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BlockFrequency BlockFrequency::operator*(BranchProbability Prob) const {
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BlockFrequency Freq(Frequency);
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Freq *= Prob;
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return Freq;
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}
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BlockFrequency &BlockFrequency::operator/=(BranchProbability Prob) {
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Frequency = Prob.scaleByInverse(Frequency);
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return *this;
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}
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BlockFrequency BlockFrequency::operator/(BranchProbability Prob) const {
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BlockFrequency Freq(Frequency);
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Freq /= Prob;
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return Freq;
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}
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