Imported Upstream version 5.18.0.234

Former-commit-id: 8071ec1a8c5eaa9be24b41745add19297608001f

external/llvm/lib/Target/AArch64/AArch64PBQPRegAlloc.h

@@ -1,41 +0,0 @@
-//==- AArch64PBQPRegAlloc.h - AArch64 specific PBQP constraints --*- C++ -*-==//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef LLVM_LIB_TARGET_AARCH64_AARCH64PBQPREGALOC_H
-#define LLVM_LIB_TARGET_AARCH64_AARCH64PBQPREGALOC_H
-
-#include "llvm/ADT/SetVector.h"
-#include "llvm/CodeGen/PBQPRAConstraint.h"
-
-namespace llvm {
-
-class TargetRegisterInfo;
-
-/// Add the accumulator chaining constraint to a PBQP graph
-class A57ChainingConstraint : public PBQPRAConstraint {
-public:
-  // Add A57 specific constraints to the PBQP graph.
-  void apply(PBQPRAGraph &G) override;
-
-private:
-  SmallSetVector<unsigned, 32> Chains;
-  const TargetRegisterInfo *TRI;
-
-  // Add the accumulator chaining constraint, inside the chain, i.e. so that
-  // parity(Rd) == parity(Ra).
-  // \return true if a constraint was added
-  bool addIntraChainConstraint(PBQPRAGraph &G, unsigned Rd, unsigned Ra);
-
-  // Add constraints between existing chains
-  void addInterChainConstraint(PBQPRAGraph &G, unsigned Rd, unsigned Ra);
-};
-
-} // end namespace llvm
-
-#endif // LLVM_LIB_TARGET_AARCH64_AARCH64PBQPREGALOC_H