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diff --git a/linux-x64/clang/include/llvm/Analysis/BlockFrequencyInfo.h b/linux-x64/clang/include/llvm/Analysis/BlockFrequencyInfo.h
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+//===- BlockFrequencyInfo.h - Block Frequency Analysis ----------*- C++ -*-===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// Loops should be simplified before this analysis.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_ANALYSIS_BLOCKFREQUENCYINFO_H
+#define LLVM_ANALYSIS_BLOCKFREQUENCYINFO_H
+
+#include "llvm/ADT/Optional.h"
+#include "llvm/IR/PassManager.h"
+#include "llvm/Pass.h"
+#include "llvm/Support/BlockFrequency.h"
+#include <cstdint>
+#include <memory>
+
+namespace llvm {
+
+class BasicBlock;
+class BranchProbabilityInfo;
+class Function;
+class LoopInfo;
+class Module;
+class raw_ostream;
+template <class BlockT> class BlockFrequencyInfoImpl;
+
+enum PGOViewCountsType { PGOVCT_None, PGOVCT_Graph, PGOVCT_Text };
+
+/// BlockFrequencyInfo pass uses BlockFrequencyInfoImpl implementation to
+/// estimate IR basic block frequencies.
+class BlockFrequencyInfo {
+ using ImplType = BlockFrequencyInfoImpl<BasicBlock>;
+
+ std::unique_ptr<ImplType> BFI;
+
+public:
+ BlockFrequencyInfo();
+ BlockFrequencyInfo(const Function &F, const BranchProbabilityInfo &BPI,
+ const LoopInfo &LI);
+ BlockFrequencyInfo(const BlockFrequencyInfo &) = delete;
+ BlockFrequencyInfo &operator=(const BlockFrequencyInfo &) = delete;
+ BlockFrequencyInfo(BlockFrequencyInfo &&Arg);
+ BlockFrequencyInfo &operator=(BlockFrequencyInfo &&RHS);
+ ~BlockFrequencyInfo();
+
+ /// Handle invalidation explicitly.
+ bool invalidate(Function &F, const PreservedAnalyses &PA,
+ FunctionAnalysisManager::Invalidator &);
+
+ const Function *getFunction() const;
+ const BranchProbabilityInfo *getBPI() const;
+ void view() const;
+
+ /// getblockFreq - Return block frequency. Return 0 if we don't have the
+ /// information. Please note that initial frequency is equal to ENTRY_FREQ. It
+ /// means that we should not rely on the value itself, but only on the
+ /// comparison to the other block frequencies. We do this to avoid using of
+ /// floating points.
+ BlockFrequency getBlockFreq(const BasicBlock *BB) const;
+
+ /// \brief Returns the estimated profile count of \p BB.
+ /// This computes the relative block frequency of \p BB and multiplies it by
+ /// the enclosing function's count (if available) and returns the value.
+ Optional<uint64_t> getBlockProfileCount(const BasicBlock *BB) const;
+
+ /// \brief Returns the estimated profile count of \p Freq.
+ /// This uses the frequency \p Freq and multiplies it by
+ /// the enclosing function's count (if available) and returns the value.
+ Optional<uint64_t> getProfileCountFromFreq(uint64_t Freq) const;
+
+ /// \brief Returns true if \p BB is an irreducible loop header
+ /// block. Otherwise false.
+ bool isIrrLoopHeader(const BasicBlock *BB);
+
+ // Set the frequency of the given basic block.
+ void setBlockFreq(const BasicBlock *BB, uint64_t Freq);
+
+ /// Set the frequency of \p ReferenceBB to \p Freq and scale the frequencies
+ /// of the blocks in \p BlocksToScale such that their frequencies relative
+ /// to \p ReferenceBB remain unchanged.
+ void setBlockFreqAndScale(const BasicBlock *ReferenceBB, uint64_t Freq,
+ SmallPtrSetImpl<BasicBlock *> &BlocksToScale);
+
+ /// calculate - compute block frequency info for the given function.
+ void calculate(const Function &F, const BranchProbabilityInfo &BPI,
+ const LoopInfo &LI);
+
+ // Print the block frequency Freq to OS using the current functions entry
+ // frequency to convert freq into a relative decimal form.
+ raw_ostream &printBlockFreq(raw_ostream &OS, const BlockFrequency Freq) const;
+
+ // Convenience method that attempts to look up the frequency associated with
+ // BB and print it to OS.
+ raw_ostream &printBlockFreq(raw_ostream &OS, const BasicBlock *BB) const;
+
+ uint64_t getEntryFreq() const;
+ void releaseMemory();
+ void print(raw_ostream &OS) const;
+};
+
+/// \brief Analysis pass which computes \c BlockFrequencyInfo.
+class BlockFrequencyAnalysis
+ : public AnalysisInfoMixin<BlockFrequencyAnalysis> {
+ friend AnalysisInfoMixin<BlockFrequencyAnalysis>;
+
+ static AnalysisKey Key;
+
+public:
+ /// \brief Provide the result type for this analysis pass.
+ using Result = BlockFrequencyInfo;
+
+ /// \brief Run the analysis pass over a function and produce BFI.
+ Result run(Function &F, FunctionAnalysisManager &AM);
+};
+
+/// \brief Printer pass for the \c BlockFrequencyInfo results.
+class BlockFrequencyPrinterPass
+ : public PassInfoMixin<BlockFrequencyPrinterPass> {
+ raw_ostream &OS;
+
+public:
+ explicit BlockFrequencyPrinterPass(raw_ostream &OS) : OS(OS) {}
+
+ PreservedAnalyses run(Function &F, FunctionAnalysisManager &AM);
+};
+
+/// \brief Legacy analysis pass which computes \c BlockFrequencyInfo.
+class BlockFrequencyInfoWrapperPass : public FunctionPass {
+ BlockFrequencyInfo BFI;
+
+public:
+ static char ID;
+
+ BlockFrequencyInfoWrapperPass();
+ ~BlockFrequencyInfoWrapperPass() override;
+
+ BlockFrequencyInfo &getBFI() { return BFI; }
+ const BlockFrequencyInfo &getBFI() const { return BFI; }
+
+ void getAnalysisUsage(AnalysisUsage &AU) const override;
+
+ bool runOnFunction(Function &F) override;
+ void releaseMemory() override;
+ void print(raw_ostream &OS, const Module *M) const override;
+};
+
+} // end namespace llvm
+
+#endif // LLVM_ANALYSIS_BLOCKFREQUENCYINFO_H