Lang Hames | 6aed984 | 2014-10-09 18:36:59 +0000 | [diff] [blame] | 1 | //===-- AArch64PBQPRegAlloc.h - AArch64 specific PBQP constraints -------===// |
| 2 | // |
| 3 | // The LLVM Compiler Infrastructure |
| 4 | // |
| 5 | // This file is distributed under the University of Illinois Open Source |
| 6 | // License. See LICENSE.TXT for details. |
| 7 | // |
| 8 | //===----------------------------------------------------------------------===// |
| 9 | |
| 10 | #ifndef LLVM_LIB_TARGET_AARCH64_AARCH64PBQPREGALOC_H |
| 11 | #define LLVM_LIB_TARGET_AARCH64_AARCH64PBQPREGALOC_H |
| 12 | |
| 13 | #include "llvm/ADT/SetVector.h" |
| 14 | #include "llvm/CodeGen/PBQPRAConstraint.h" |
| 15 | |
| 16 | namespace llvm { |
| 17 | |
Arnaud A. de Grandmaison | 9b33305 | 2014-10-22 12:40:20 +0000 | [diff] [blame] | 18 | /// Add the accumulator chaining constraint to a PBQP graph |
| 19 | class A57ChainingConstraint : public PBQPRAConstraint { |
Lang Hames | 6aed984 | 2014-10-09 18:36:59 +0000 | [diff] [blame] | 20 | public: |
Lang Hames | 6aed984 | 2014-10-09 18:36:59 +0000 | [diff] [blame] | 21 | // Add A57 specific constraints to the PBQP graph. |
| 22 | void apply(PBQPRAGraph &G) override; |
| 23 | |
| 24 | private: |
| 25 | SmallSetVector<unsigned, 32> Chains; |
Arnaud A. de Grandmaison | 9b33305 | 2014-10-22 12:40:20 +0000 | [diff] [blame] | 26 | const TargetRegisterInfo *TRI; |
Lang Hames | 6aed984 | 2014-10-09 18:36:59 +0000 | [diff] [blame] | 27 | |
| 28 | // Add the accumulator chaining constraint, inside the chain, i.e. so that |
| 29 | // parity(Rd) == parity(Ra). |
| 30 | // \return true if a constraint was added |
| 31 | bool addIntraChainConstraint(PBQPRAGraph &G, unsigned Rd, unsigned Ra); |
| 32 | |
| 33 | // Add constraints between existing chains |
| 34 | void addInterChainConstraint(PBQPRAGraph &G, unsigned Rd, unsigned Ra); |
| 35 | }; |
Alexander Kornienko | f00654e | 2015-06-23 09:49:53 +0000 | [diff] [blame] | 36 | } |
Lang Hames | 6aed984 | 2014-10-09 18:36:59 +0000 | [diff] [blame] | 37 | |
| 38 | #endif // LLVM_LIB_TARGET_AARCH64_AARCH64PBQPREGALOC_H |