llvm-6502/lib/Target/AArch64/AArch64PBQPRegAlloc.h
Alexander Kornienko cd52a7a381 Revert r240137 (Fixed/added namespace ending comments using clang-tidy. NFC)
Apparently, the style needs to be agreed upon first.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@240390 91177308-0d34-0410-b5e6-96231b3b80d8
2015-06-23 09:49:53 +00:00

39 lines
1.2 KiB
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//===-- AArch64PBQPRegAlloc.h - AArch64 specific PBQP constraints -------===//
//
// 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 {
/// 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);
};
}
#endif // LLVM_LIB_TARGET_AARCH64_AARCH64PBQPREGALOC_H