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/*========================== begin_copyright_notice ============================
Copyright (C) 2017-2021 Intel Corporation
SPDX-License-Identifier: MIT
============================= end_copyright_notice ===========================*/
#include "Compiler/Optimizer/OpenCLPasses/Image3dToImage2darray/Image3dToImage2darray.hpp"
#include "Compiler/IGCPassSupport.h"
#include "GenISAIntrinsics/GenIntrinsicInst.h"
#include "Compiler/MetaDataUtilsWrapper.h"
#include "Compiler/Optimizer/OCLBIUtils.h"
#include "common/LLVMWarningsPush.hpp"
#include <llvm/Pass.h>
#include "common/LLVMWarningsPop.hpp"
using namespace llvm;
using namespace IGC;
using namespace IGC::IGCMD;
#define PASS_FLAG "igc-3d-to-2darray"
#define PASS_DESCRIPTION "Converts 3d images access to 2d array image accesses where possible"
#define PASS_CFG_ONLY false
#define PASS_ANALYSIS false
IGC_INITIALIZE_PASS_BEGIN(Image3dToImage2darray, PASS_FLAG, PASS_DESCRIPTION, PASS_CFG_ONLY, PASS_ANALYSIS)
IGC_INITIALIZE_PASS_DEPENDENCY(MetaDataUtilsWrapper)
IGC_INITIALIZE_PASS_END(Image3dToImage2darray, PASS_FLAG, PASS_DESCRIPTION, PASS_CFG_ONLY, PASS_ANALYSIS)
char Image3dToImage2darray::ID = 0;
Image3dToImage2darray::Image3dToImage2darray() :
FunctionPass(ID), m_Changed(false), m_MetadataUtils(nullptr), m_modMD(nullptr)
{
initializeImage3dToImage2darrayPass(*PassRegistry::getPassRegistry());
}
bool Image3dToImage2darray::createImageAnnotations(
GenIntrinsicInst* pCall,
unsigned imageIdx,
const MetaDataUtils* pMdUtils,
const ModuleMetaData* modMD,
const Value* pCoord)
{
uint argNum = 0;
auto* pFunc = pCall->getParent()->getParent();
FunctionInfoMetaDataHandle funcInfoMD = pMdUtils->getFunctionsInfoItem(pFunc);
auto* pImgOp = pCall->getArgOperand(imageIdx);
// Find the arg number of the image so we can look up its ArgInfoList metadata.
if (pImgOp->getType()->isPointerTy())
{
auto* pImg = ValueTracker::track(pCall, imageIdx, pMdUtils, modMD);
if (pImg == nullptr)
return false;
auto* pImgArg = cast<Argument>(pImg);
argNum = pImgArg->getArgNo();
}
else if (auto * Idx = dyn_cast<ConstantInt>(pImgOp))
{
uint64_t IdxVal = Idx->getZExtValue();
auto* arg = CImagesBI::CImagesUtils::findImageFromBufferPtr(*pMdUtils, pFunc, RESOURCE, IdxVal, modMD);
if (!arg)
return false;
argNum = arg->getArgNo();
}
else
{
return false;
}
ArgInfoMetaDataHandle argHandle;
bool found = false;
if (funcInfoMD->isArgInfoListHasValue())
{
for (auto AI = funcInfoMD->begin_ArgInfoList(), AE = funcInfoMD->end_ArgInfoList(); AI != AE; ++AI)
{
ArgInfoMetaDataHandle arg = *AI;
if (arg->getExplicitArgNum() == argNum)
{
argHandle = arg;
found = true;
break;
}
}
}
if (!found)
{
argHandle = ArgInfoMetaDataHandle(ArgInfoMetaData::get());
argHandle->setExplicitArgNum(argNum);
funcInfoMD->addArgInfoListItem(argHandle);
}
if (!argHandle->isImgAccessFloatCoordsHasValue())
argHandle->setImgAccessFloatCoords(false);
if (!argHandle->isImgAccessIntCoordsHasValue())
argHandle->setImgAccessIntCoords(false);
// We check here to see if the third coord (or for 2darray, the image layer)
// has an integer origin. For samplers of:
// UNNORMALIZED COORDS, NEAREST FILTERTING, CLAMP_TO_EDGE ADDRESSING
// In OCL:
// 3D Images 3rd component: k = clamp((int)floor(w), 0, size-1)
// 2D Image arrays: layer = clamp((int)rint(w), 0, size-1)
// The two will match when floor(w) == rint(w)
bool intCoords = CImagesBI::derivedFromInt(pCoord);
if (intCoords)
argHandle->setImgAccessIntCoords(true);
else
argHandle->setImgAccessFloatCoords(true);
return true;
}
void Image3dToImage2darray::visitCallInst(CallInst& CI)
{
GenIntrinsicInst* pCall = nullptr;
if ((pCall = dyn_cast<GenIntrinsicInst>(&CI)) == nullptr)
return;
switch (pCall->getIntrinsicID())
{
case GenISAIntrinsic::GenISA_ldptr:
{
auto* pLoad = cast<SamplerLoadIntrinsic>(pCall);
auto* pCoord = pCall->getArgOperand(3);
m_Changed |= createImageAnnotations(pCall, pLoad->getTextureIndex(), m_MetadataUtils, m_modMD, pCoord);
break;
}
case GenISAIntrinsic::GenISA_sampleLptr:
{
auto* pSample = cast<SampleIntrinsic>(pCall);
auto* pCoord = pCall->getArgOperand(3);
m_Changed |= createImageAnnotations(pCall, pSample->getTextureIndex(), m_MetadataUtils, m_modMD, pCoord);
break;
}
default:
return;
}
}
bool Image3dToImage2darray::runOnFunction(Function& F)
{
m_MetadataUtils = getAnalysis<MetaDataUtilsWrapper>().getMetaDataUtils();
m_modMD = getAnalysis<MetaDataUtilsWrapper>().getModuleMetaData();
if (m_MetadataUtils->findFunctionsInfoItem(&F) == m_MetadataUtils->end_FunctionsInfo())
{
return false;
}
visit(F);
if (m_Changed)
{
m_MetadataUtils->save(F.getContext());
}
return m_Changed;
}
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