Update prebuilt Clang to r353983e.HEADq10.0

clang 9.0.5 (based on r353983e) from build 5696680.

Bug: http://b/135931688
Bug: http://b/136008926
Test: N/A
Change-Id: I922d17410047d2e2df4625615352c588ee71b203

1 files changed, 163 insertions, 0 deletions

diff --git a/clang-r353983e/include/llvm/CodeGen/MachineConstantPool.h b/clang-r353983e/include/llvm/CodeGen/MachineConstantPool.h
new file mode 100644
index 00000000..4d07b620
--- /dev/null
+++ b/clang-r353983e/include/llvm/CodeGen/MachineConstantPool.h
@@ -0,0 +1,163 @@
+//===- CodeGen/MachineConstantPool.h - Abstract Constant Pool ---*- 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
+//
+//===----------------------------------------------------------------------===//
+//
+/// @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.
+/// 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.
+/// 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:
+  /// 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