| 1 | //===- HardwareLoops.h ------------------------------------------*- C++ -*-===// |
|---|---|
| 2 | // |
| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| 4 | // See https://llvm.org/LICENSE.txt for license information. |
| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| 6 | // |
| 7 | //===----------------------------------------------------------------------===// |
| 8 | /// \file |
| 9 | /// |
| 10 | /// Defines an IR pass for the creation of hardware loops. |
| 11 | /// |
| 12 | //===----------------------------------------------------------------------===// |
| 13 | |
| 14 | #ifndef LLVM_CODEGEN_HARDWARELOOPS_H |
| 15 | #define LLVM_CODEGEN_HARDWARELOOPS_H |
| 16 | |
| 17 | #include "llvm/IR/PassManager.h" |
| 18 | |
| 19 | namespace llvm { |
| 20 | |
| 21 | struct HardwareLoopOptions { |
| 22 | std::optional<unsigned> Decrement; |
| 23 | std::optional<unsigned> Bitwidth; |
| 24 | std::optional<bool> Force; |
| 25 | std::optional<bool> ForcePhi; |
| 26 | std::optional<bool> ForceNested; |
| 27 | std::optional<bool> ForceGuard; |
| 28 | |
| 29 | HardwareLoopOptions &setDecrement(unsigned Count) { |
| 30 | Decrement = Count; |
| 31 | return *this; |
| 32 | } |
| 33 | HardwareLoopOptions &setCounterBitwidth(unsigned Width) { |
| 34 | Bitwidth = Width; |
| 35 | return *this; |
| 36 | } |
| 37 | HardwareLoopOptions &setForce(bool Force) { |
| 38 | this->Force = Force; |
| 39 | return *this; |
| 40 | } |
| 41 | HardwareLoopOptions &setForcePhi(bool Force) { |
| 42 | ForcePhi = Force; |
| 43 | return *this; |
| 44 | } |
| 45 | HardwareLoopOptions &setForceNested(bool Force) { |
| 46 | ForceNested = Force; |
| 47 | return *this; |
| 48 | } |
| 49 | HardwareLoopOptions &setForceGuard(bool Force) { |
| 50 | ForceGuard = Force; |
| 51 | return *this; |
| 52 | } |
| 53 | bool getForcePhi() const { |
| 54 | return ForcePhi.has_value() && ForcePhi.value(); |
| 55 | } |
| 56 | bool getForceNested() const { |
| 57 | return ForceNested.has_value() && ForceNested.value(); |
| 58 | } |
| 59 | bool getForceGuard() const { |
| 60 | return ForceGuard.has_value() && ForceGuard.value(); |
| 61 | } |
| 62 | }; |
| 63 | |
| 64 | class HardwareLoopsPass : public PassInfoMixin<HardwareLoopsPass> { |
| 65 | HardwareLoopOptions Opts; |
| 66 | |
| 67 | public: |
| 68 | explicit HardwareLoopsPass(HardwareLoopOptions Opts = {}) |
| 69 | : Opts(Opts) { } |
| 70 | |
| 71 | PreservedAnalyses run(Function &F, FunctionAnalysisManager &AM); |
| 72 | }; |
| 73 | |
| 74 | } // end namespace llvm |
| 75 | |
| 76 | #endif // LLVM_CODEGEN_HARDWARELOOPS_H |
| 77 |