42 lines
1.3 KiB
C++
42 lines
1.3 KiB
C++
//==- 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
|