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3e48c70c20
Summary: Port the ModuleSummaryAnalysisWrapperPass to the new pass manager. Use it in the ported BitcodeWriterPass (similar to how we use the legacy ModuleSummaryAnalysisWrapperPass in the legacy WriteBitcodePass). Also, pass the -module-summary opt flag through to the new pass manager pipeline and through to the bitcode writer pass, and add a test that uses it. Reviewers: mehdi_amini Subscribers: llvm-commits, mehdi_amini Differential Revision: https://reviews.llvm.org/D23439 llvm-svn: 278508
107 lines
3.4 KiB
C++
107 lines
3.4 KiB
C++
//===- ModuleSummaryAnalysis.h - Module summary index builder ---*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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/// \file
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/// This is the interface to build a ModuleSummaryIndex for a module.
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///
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_ANALYSIS_MODULESUMMARYANALYSIS_H
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#define LLVM_ANALYSIS_MODULESUMMARYANALYSIS_H
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#include "llvm/ADT/STLExtras.h"
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#include "llvm/IR/ModuleSummaryIndex.h"
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#include "llvm/IR/PassManager.h"
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#include "llvm/Pass.h"
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namespace llvm {
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class BlockFrequencyInfo;
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/// Class to build a module summary index for the given Module, possibly from
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/// a Pass.
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class ModuleSummaryIndexBuilder {
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/// The index being built
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std::unique_ptr<ModuleSummaryIndex> Index;
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/// The module for which we are building an index
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const Module *M;
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public:
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/// Default constructor
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ModuleSummaryIndexBuilder() = default;
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/// Constructor that builds an index for the given Module. An optional
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/// callback can be supplied to obtain the frequency info for a function.
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ModuleSummaryIndexBuilder(
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const Module *M,
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std::function<BlockFrequencyInfo *(const Function &F)> Ftor = nullptr);
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/// Get a reference to the index owned by builder
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ModuleSummaryIndex &getIndex() const { return *Index; }
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/// Take ownership of the built index
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std::unique_ptr<ModuleSummaryIndex> takeIndex() { return std::move(Index); }
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private:
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/// Compute summary for given function with optional frequency information
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void computeFunctionSummary(const Function &F,
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BlockFrequencyInfo *BFI = nullptr);
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/// Compute summary for given variable with optional frequency information
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void computeVariableSummary(const GlobalVariable &V);
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};
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/// Analysis pass to provide the ModuleSummaryIndex object.
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class ModuleSummaryIndexAnalysis
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: public AnalysisInfoMixin<ModuleSummaryIndexAnalysis> {
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friend AnalysisInfoMixin<ModuleSummaryIndexAnalysis>;
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static char PassID;
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std::unique_ptr<ModuleSummaryIndexBuilder> IndexBuilder;
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public:
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typedef const ModuleSummaryIndex &Result;
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const ModuleSummaryIndex &run(Module &M, ModuleAnalysisManager &AM);
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};
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/// Legacy wrapper pass to provide the ModuleSummaryIndex object.
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class ModuleSummaryIndexWrapperPass : public ModulePass {
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std::unique_ptr<ModuleSummaryIndexBuilder> IndexBuilder;
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public:
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static char ID;
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ModuleSummaryIndexWrapperPass();
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/// Get the index built by pass
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ModuleSummaryIndex &getIndex() { return IndexBuilder->getIndex(); }
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const ModuleSummaryIndex &getIndex() const {
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return IndexBuilder->getIndex();
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}
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bool runOnModule(Module &M) override;
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bool doFinalization(Module &M) override;
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void getAnalysisUsage(AnalysisUsage &AU) const override;
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};
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//===--------------------------------------------------------------------===//
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//
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// createModuleSummaryIndexWrapperPass - This pass builds a ModuleSummaryIndex
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// object for the module, to be written to bitcode or LLVM assembly.
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//
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ModulePass *createModuleSummaryIndexWrapperPass();
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/// Returns true if \p M is eligible for ThinLTO promotion.
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///
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/// Currently we check if it has any any InlineASM that uses an internal symbol.
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bool moduleCanBeRenamedForThinLTO(const Module &M);
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}
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#endif
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