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to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351636
51 lines
1.7 KiB
C++
51 lines
1.7 KiB
C++
//===-- AMDGPUInstrInfo.cpp - Base class for AMD GPU InstrInfo ------------===//
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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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//
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/// \file
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/// \brief Implementation of the TargetInstrInfo class that is common to all
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/// AMD GPUs.
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//
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//===----------------------------------------------------------------------===//
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#include "AMDGPUInstrInfo.h"
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#include "AMDGPURegisterInfo.h"
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#include "AMDGPUTargetMachine.h"
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#include "MCTargetDesc/AMDGPUMCTargetDesc.h"
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#include "llvm/CodeGen/MachineFrameInfo.h"
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#include "llvm/CodeGen/MachineInstrBuilder.h"
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#include "llvm/CodeGen/MachineRegisterInfo.h"
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using namespace llvm;
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// Pin the vtable to this file.
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//void AMDGPUInstrInfo::anchor() {}
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AMDGPUInstrInfo::AMDGPUInstrInfo(const GCNSubtarget &ST) { }
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// TODO: Should largely merge with AMDGPUTTIImpl::isSourceOfDivergence.
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bool AMDGPUInstrInfo::isUniformMMO(const MachineMemOperand *MMO) {
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const Value *Ptr = MMO->getValue();
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// UndefValue means this is a load of a kernel input. These are uniform.
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// Sometimes LDS instructions have constant pointers.
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// If Ptr is null, then that means this mem operand contains a
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// PseudoSourceValue like GOT.
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if (!Ptr || isa<UndefValue>(Ptr) ||
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isa<Constant>(Ptr) || isa<GlobalValue>(Ptr))
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return true;
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if (MMO->getAddrSpace() == AMDGPUAS::CONSTANT_ADDRESS_32BIT)
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return true;
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if (const Argument *Arg = dyn_cast<Argument>(Ptr))
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return AMDGPU::isArgPassedInSGPR(Arg);
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const Instruction *I = dyn_cast<Instruction>(Ptr);
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return I && I->getMetadata("amdgpu.uniform");
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}
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