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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 *const NAMED_METADATA_COARSE_PHASE = "coarse_phase";
static const char *const NAMED_METADATA_PIXEL_PHASE = "pixel_phase";
static const char *const NAMED_METADATA_SAMPLE_PHASE = "sample_phase";
static const char *g_cRate[] = {
NAMED_METADATA_COARSE_PHASE,
NAMED_METADATA_PIXEL_PHASE,
NAMED_METADATA_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;
};
} // namespace IGC
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