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
22namespace llvm {
23class AMDGPUCombinerHelper : public CombinerHelper {
24protected:
25 const GCNSubtarget &STI;
26 const SIInstrInfo &TII;
27
28public:
29 using CombinerHelper::CombinerHelper;
30 AMDGPUCombinerHelper(GISelChangeObserver &Observer, MachineIRBuilder &B,
31 bool IsPreLegalize, GISelValueTracking *VT,
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