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diff --git a/linux-x64/clang/include/llvm/CodeGen/MachineConstantPool.h b/linux-x64/clang/include/llvm/CodeGen/MachineConstantPool.h
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+//===- CodeGen/MachineConstantPool.h - Abstract Constant Pool ---*- C++ -*-===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+/// @file
+/// This file declares the MachineConstantPool class which is an abstract
+/// constant pool to keep track of constants referenced by a function.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_CODEGEN_MACHINECONSTANTPOOL_H
+#define LLVM_CODEGEN_MACHINECONSTANTPOOL_H
+
+#include "llvm/ADT/DenseSet.h"
+#include "llvm/MC/SectionKind.h"
+#include <climits>
+#include <vector>
+
+namespace llvm {
+
+class Constant;
+class DataLayout;
+class FoldingSetNodeID;
+class MachineConstantPool;
+class raw_ostream;
+class Type;
+
+/// Abstract base class for all machine specific constantpool value subclasses.
+///
+class MachineConstantPoolValue {
+ virtual void anchor();
+
+ Type *Ty;
+
+public:
+ explicit MachineConstantPoolValue(Type *ty) : Ty(ty) {}
+ virtual ~MachineConstantPoolValue() = default;
+
+ /// getType - get type of this MachineConstantPoolValue.
+ ///
+ Type *getType() const { return Ty; }
+
+ virtual int getExistingMachineCPValue(MachineConstantPool *CP,
+ unsigned Alignment) = 0;
+
+ virtual void addSelectionDAGCSEId(FoldingSetNodeID &ID) = 0;
+
+ /// print - Implement operator<<
+ virtual void print(raw_ostream &O) const = 0;
+};
+
+inline raw_ostream &operator<<(raw_ostream &OS,
+ const MachineConstantPoolValue &V) {
+ V.print(OS);
+ return OS;
+}
+
+/// This class is a data container for one entry in a MachineConstantPool.
+/// It contains a pointer to the value and an offset from the start of
+/// the constant pool.
+/// @brief An entry in a MachineConstantPool
+class MachineConstantPoolEntry {
+public:
+ /// The constant itself.
+ union {
+ const Constant *ConstVal;
+ MachineConstantPoolValue *MachineCPVal;
+ } Val;
+
+ /// The required alignment for this entry. The top bit is set when Val is
+ /// a target specific MachineConstantPoolValue.
+ unsigned Alignment;
+
+ MachineConstantPoolEntry(const Constant *V, unsigned A)
+ : Alignment(A) {
+ Val.ConstVal = V;
+ }
+
+ MachineConstantPoolEntry(MachineConstantPoolValue *V, unsigned A)
+ : Alignment(A) {
+ Val.MachineCPVal = V;
+ Alignment |= 1U << (sizeof(unsigned) * CHAR_BIT - 1);
+ }
+
+ /// isMachineConstantPoolEntry - Return true if the MachineConstantPoolEntry
+ /// is indeed a target specific constantpool entry, not a wrapper over a
+ /// Constant.
+ bool isMachineConstantPoolEntry() const {
+ return (int)Alignment < 0;
+ }
+
+ int getAlignment() const {
+ return Alignment & ~(1 << (sizeof(unsigned) * CHAR_BIT - 1));
+ }
+
+ Type *getType() const;
+
+ /// This method classifies the entry according to whether or not it may
+ /// generate a relocation entry. This must be conservative, so if it might
+ /// codegen to a relocatable entry, it should say so.
+ bool needsRelocation() const;
+
+ SectionKind getSectionKind(const DataLayout *DL) const;
+};
+
+/// The MachineConstantPool class keeps track of constants referenced by a
+/// function which must be spilled to memory. This is used for constants which
+/// are unable to be used directly as operands to instructions, which typically
+/// include floating point and large integer constants.
+///
+/// Instructions reference the address of these constant pool constants through
+/// the use of MO_ConstantPoolIndex values. When emitting assembly or machine
+/// code, these virtual address references are converted to refer to the
+/// address of the function constant pool values.
+/// @brief The machine constant pool.
+class MachineConstantPool {
+ unsigned PoolAlignment; ///< The alignment for the pool.
+ std::vector<MachineConstantPoolEntry> Constants; ///< The pool of constants.
+ /// MachineConstantPoolValues that use an existing MachineConstantPoolEntry.
+ DenseSet<MachineConstantPoolValue*> MachineCPVsSharingEntries;
+ const DataLayout &DL;
+
+ const DataLayout &getDataLayout() const { return DL; }
+
+public:
+ /// @brief The only constructor.
+ explicit MachineConstantPool(const DataLayout &DL)
+ : PoolAlignment(1), DL(DL) {}
+ ~MachineConstantPool();
+
+ /// getConstantPoolAlignment - Return the alignment required by
+ /// the whole constant pool, of which the first element must be aligned.
+ unsigned getConstantPoolAlignment() const { return PoolAlignment; }
+
+ /// getConstantPoolIndex - Create a new entry in the constant pool or return
+ /// an existing one. User must specify the minimum required alignment for
+ /// the object.
+ unsigned getConstantPoolIndex(const Constant *C, unsigned Alignment);
+ unsigned getConstantPoolIndex(MachineConstantPoolValue *V,
+ unsigned Alignment);
+
+ /// isEmpty - Return true if this constant pool contains no constants.
+ bool isEmpty() const { return Constants.empty(); }
+
+ const std::vector<MachineConstantPoolEntry> &getConstants() const {
+ return Constants;
+ }
+
+ /// print - Used by the MachineFunction printer to print information about
+ /// constant pool objects. Implemented in MachineFunction.cpp
+ void print(raw_ostream &OS) const;
+
+ /// dump - Call print(cerr) to be called from the debugger.
+ void dump() const;
+};
+
+} // end namespace llvm
+
+#endif // LLVM_CODEGEN_MACHINECONSTANTPOOL_H