| //===-- SizeOpts.cpp - code size optimization related code ----------------===// |
| // |
| // 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 |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This file contains some shared code size optimization related code. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "llvm/Analysis/BlockFrequencyInfo.h" |
| #include "llvm/Analysis/ProfileSummaryInfo.h" |
| #include "llvm/Support/CommandLine.h" |
| #include "llvm/Transforms/Utils/SizeOpts.h" |
| using namespace llvm; |
| |
| static cl::opt<bool> ProfileGuidedSizeOpt( |
| "pgso", cl::Hidden, cl::init(true), |
| cl::desc("Enable the profile guided size optimization. ")); |
| |
| bool llvm::shouldOptimizeForSize(Function *F, ProfileSummaryInfo *PSI, |
| BlockFrequencyInfo *BFI) { |
| assert(F); |
| if (!PSI || !BFI || !PSI->hasProfileSummary()) |
| return false; |
| return ProfileGuidedSizeOpt && PSI->isFunctionColdInCallGraph(F, *BFI); |
| } |
| |
| bool llvm::shouldOptimizeForSize(BasicBlock *BB, ProfileSummaryInfo *PSI, |
| BlockFrequencyInfo *BFI) { |
| assert(BB); |
| if (!PSI || !BFI || !PSI->hasProfileSummary()) |
| return false; |
| return ProfileGuidedSizeOpt && PSI->isColdBlock(BB, BFI); |
| } |