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/*========================== begin_copyright_notice ============================
Copyright (C) 2017-2021 Intel Corporation
SPDX-License-Identifier: MIT
============================= end_copyright_notice ===========================*/
#pragma once
#include "Compiler/CodeGenPublicEnums.h"
#include "common/LLVMWarningsPush.hpp"
#include <llvm/IR/Module.h>
#include <llvm/IR/Constants.h>
#include "common/LLVMWarningsPop.hpp"
namespace IGC
{
static const char* g_cRate[] =
{
"coarse_phase",
"pixel_phase",
"sample_phase",
"legacy",
};
class MetadataBuilder
{
public:
MetadataBuilder(llvm::Module* module)
{
m_mod = module;
}
void SetShadingRate(llvm::Function* F, IGC::PixelShaderPhaseType rate)
{
// TODO: move to the Metadata API
llvm::SmallVector<llvm::Metadata*, 2> metadata;
llvm::NamedMDNode* shadingRate = F->getParent()->getOrInsertNamedMetadata(g_cRate[rate]);
metadata.push_back(llvm::ValueAsMetadata::get(F));
llvm::MDNode* phaseMetadata = llvm::MDNode::get(F->getContext(), metadata);
shadingRate->addOperand(phaseMetadata);
}
void UpdateShadingRate(llvm::Function* oldF, llvm::Function* newF)
{
llvm::Module* module = oldF->getParent();
for (int i = IGC::PSPHASE_COARSE; i < IGC::PSPHASE_LEGACY; i++)
{
llvm::NamedMDNode* mdNode;
mdNode = module->getNamedMetadata(g_cRate[i]);
if (mdNode != nullptr)
{
llvm::Function* mdF = llvm::mdconst::dyn_extract<llvm::Function>(
mdNode->getOperand(0)->getOperand(0));
if (mdF == oldF)
{
module->eraseNamedMetadata(mdNode);
SetShadingRate(newF, (PixelShaderPhaseType)i);
}
}
}
}
private:
llvm::Module* m_mod;
};
}
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