1 //=== lib/CodeGen/GlobalISel/AMDGPUCombinerHelper.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 /// 9 /// \file 10 /// This contains common combine transformations that may be used in a combine 11 /// pass. 12 /// 13 //===----------------------------------------------------------------------===// 14 15 #ifndef LLVM_LIB_TARGET_AMDGPU_AMDGPUCOMBINERHELPER_H 16 #define LLVM_LIB_TARGET_AMDGPU_AMDGPUCOMBINERHELPER_H 17 18 #include "GCNSubtarget.h" 19 #include "llvm/CodeGen/GlobalISel/Combiner.h" 20 #include "llvm/CodeGen/GlobalISel/CombinerHelper.h" 21 22 namespace llvm { 23 class AMDGPUCombinerHelper : public CombinerHelper { 24 protected: 25 const GCNSubtarget &STI; 26 const SIInstrInfo &TII; 27 28 public: 29 using CombinerHelper::CombinerHelper; 30 AMDGPUCombinerHelper(GISelChangeObserver &Observer, MachineIRBuilder &B, 31 bool IsPreLegalize, GISelKnownBits *KB, 32 MachineDominatorTree *MDT, const LegalizerInfo *LI, 33 const GCNSubtarget &STI); 34 35 bool matchFoldableFneg(MachineInstr &MI, MachineInstr *&MatchInfo) const; 36 void applyFoldableFneg(MachineInstr &MI, MachineInstr *&MatchInfo) const; 37 38 bool matchExpandPromotedF16FMed3(MachineInstr &MI, Register Src0, 39 Register Src1, Register Src2) const; 40 void applyExpandPromotedF16FMed3(MachineInstr &MI, Register Src0, 41 Register Src1, Register Src2) const; 42 43 bool matchCombineFmulWithSelectToFldexp( 44 MachineInstr &MI, MachineInstr &Sel, 45 std::function<void(MachineIRBuilder &)> &MatchInfo) const; 46 }; 47 48 } // namespace llvm 49 50 #endif // LLVM_LIB_TARGET_AMDGPU_AMDGPUCOMBINERHELPER_H 51