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//===-- AMDGPUInstrInfo.cpp - Base class for AMD GPU InstrInfo ------------===//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
/// \file
/// \brief Implementation of the TargetInstrInfo class that is common to all
/// AMD GPUs.
#include "AMDGPUInstrInfo.h"
#include "AMDGPU.h"
#include "llvm/CodeGen/MachineMemOperand.h"
#include "llvm/IR/Constants.h"
#include "llvm/IR/Instruction.h"
#include "llvm/IR/Value.h"
using namespace llvm;
// Pin the vtable to this file.
//void AMDGPUInstrInfo::anchor() {}
AMDGPUInstrInfo::AMDGPUInstrInfo(const GCNSubtarget &ST) { }
// TODO: Should largely merge with AMDGPUTTIImpl::isSourceOfDivergence.
bool AMDGPUInstrInfo::isUniformMMO(const MachineMemOperand *MMO) {
const Value *Ptr = MMO->getValue();
// UndefValue means this is a load of a kernel input. These are uniform.
// Sometimes LDS instructions have constant pointers.
// If Ptr is null, then that means this mem operand contains a
// PseudoSourceValue like GOT.
if (!Ptr || isa<UndefValue>(Ptr) ||
isa<Constant>(Ptr) || isa<GlobalValue>(Ptr))
return true;
return true;
if (const Argument *Arg = dyn_cast<Argument>(Ptr))
return AMDGPU::isArgPassedInSGPR(Arg);
const Instruction *I = dyn_cast<Instruction>(Ptr);
return I && I->getMetadata("amdgpu.uniform");