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00955b788c
I plan on adding memcpy optimizations in the GlobalISel pipeline, but we can't do that unless we delay lowering to actual function calls. This patch changes the translator to generate G_INTRINSIC_W_SIDE_EFFECTS for these functions, and then have each target specify that using the new custom legalizer for intrinsics hook that they want it expanded it a libcall. Differential Revision: https://reviews.llvm.org/D64895 llvm-svn: 366516
49 lines
1.9 KiB
C++
49 lines
1.9 KiB
C++
//===- AArch64LegalizerInfo --------------------------------------*- C++ -*-==//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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/// \file
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/// This file declares the targeting of the Machinelegalizer class for
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/// AArch64.
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/// \todo This should be generated by TableGen.
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_LIB_TARGET_AARCH64_AARCH64MACHINELEGALIZER_H
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#define LLVM_LIB_TARGET_AARCH64_AARCH64MACHINELEGALIZER_H
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#include "llvm/CodeGen/GlobalISel/GISelChangeObserver.h"
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#include "llvm/CodeGen/GlobalISel/LegalizerInfo.h"
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namespace llvm {
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class LLVMContext;
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class AArch64Subtarget;
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/// This class provides the information for the target register banks.
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class AArch64LegalizerInfo : public LegalizerInfo {
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public:
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AArch64LegalizerInfo(const AArch64Subtarget &ST);
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bool legalizeCustom(MachineInstr &MI, MachineRegisterInfo &MRI,
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MachineIRBuilder &MIRBuilder,
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GISelChangeObserver &Observer) const override;
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bool legalizeIntrinsic(MachineInstr &MI, MachineRegisterInfo &MRI,
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MachineIRBuilder &MIRBuilder) const override;
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private:
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bool legalizeVaArg(MachineInstr &MI, MachineRegisterInfo &MRI,
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MachineIRBuilder &MIRBuilder) const;
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bool legalizeLoadStore(MachineInstr &MI, MachineRegisterInfo &MRI,
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MachineIRBuilder &MIRBuilder,
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GISelChangeObserver &Observer) const;
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bool legalizeShlAshrLshr(MachineInstr &MI, MachineRegisterInfo &MRI,
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MachineIRBuilder &MIRBuilder,
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GISelChangeObserver &Observer) const;
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};
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} // End llvm namespace.
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#endif
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