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thirdparty/capstone/suite/synctools/tablegen/include/llvm/CodeGen/MBFIWrapper.h

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+//===- llvm/CodeGen/MBFIWrapper.h -------------------------------*- C++ -*-===//
+//
+// 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 class keeps track of branch frequencies of newly created blocks and
+// tail-merged blocks. Used by the TailDuplication and MachineBlockPlacement.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_CODEGEN_MBFIWRAPPER_H
+#define LLVM_CODEGEN_MBFIWRAPPER_H
+
+#include "llvm/ADT/DenseMap.h"
+#include "llvm/ADT/Optional.h"
+#include "llvm/Support/BlockFrequency.h"
+
+namespace llvm {
+
+class MachineBasicBlock;
+class MachineBlockFrequencyInfo;
+
+class MBFIWrapper {
+ public:
+  MBFIWrapper(const MachineBlockFrequencyInfo &I) : MBFI(I) {}
+
+  BlockFrequency getBlockFreq(const MachineBasicBlock *MBB) const;
+  void setBlockFreq(const MachineBasicBlock *MBB, BlockFrequency F);
+  Optional<uint64_t> getBlockProfileCount(const MachineBasicBlock *MBB) const;
+
+  raw_ostream &printBlockFreq(raw_ostream &OS,
+                              const MachineBasicBlock *MBB) const;
+  raw_ostream &printBlockFreq(raw_ostream &OS,
+                              const BlockFrequency Freq) const;
+  void view(const Twine &Name, bool isSimple = true);
+  uint64_t getEntryFreq() const;
+  const MachineBlockFrequencyInfo &getMBFI() { return MBFI; }
+
+ private:
+  const MachineBlockFrequencyInfo &MBFI;
+  DenseMap<const MachineBasicBlock *, BlockFrequency> MergedBBFreq;
+};
+
+} // end namespace llvm
+
+#endif // LLVM_CODEGEN_MBFIWRAPPER_H