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/*========================== begin_copyright_notice ============================
Copyright (C) 2017-2021 Intel Corporation
SPDX-License-Identifier: MIT
============================= end_copyright_notice ===========================*/
#pragma once
#include "MetaDataTraits.h"
#include "common/LLVMWarningsPush.hpp"
#include <llvm/IR/Value.h>
#include <llvm/IR/Metadata.h>
#include "common/LLVMWarningsPop.hpp"
#include "Probe/Assertion.h"
namespace IGC {
// Represents the meta data value stored using the positional schema
// The root node is actually storing the value
template <class T, class Traits = MDValueTraits<T>> class MetaDataValue {
public:
typedef typename Traits::value_type value_type;
MetaDataValue(llvm::Metadata *pNode)
: m_pNode(pNode), m_value(Traits::load(pNode)), m_isDirty(false), m_hasGeneratedValued(false) {}
MetaDataValue() : m_pNode(NULL), m_value(), m_isDirty(false), m_hasGeneratedValued(false) {}
MetaDataValue(const value_type &val) : m_pNode(NULL), m_value(val), m_isDirty(true), m_hasGeneratedValued(false) {}
operator value_type() const { return m_value; }
const value_type &get() const { return m_value; }
llvm::MDNode *getMDNode() const { return static_cast<llvm::MDNode *>(m_pNode); }
void set(const value_type &val) {
m_value = val;
m_isDirty = true;
}
bool dirty() const { return m_isDirty; }
bool hasValue() const { return m_pNode != NULL || dirty() || m_hasGeneratedValued; }
void discardChanges() { m_isDirty = false; }
void save(llvm::LLVMContext &context, llvm::Metadata *pNode) const {
IGC_UNUSED(context);
if (m_pNode == pNode && !dirty()) {
// we are saving to our own node but nothing was changed
return;
}
if (!hasValue()) {
return;
}
#if 0
pNode->replaceAllUsesWith(generateNode(context));
#else
IGC_ASSERT(0);
#endif
}
llvm::Metadata *generateNode(llvm::LLVMContext &context) const {
if (!hasValue()) {
return NULL;
}
m_hasGeneratedValued = true;
return Traits::generateValue(context, m_value);
}
private:
llvm::Metadata *m_pNode;
value_type m_value;
bool m_isDirty;
mutable bool m_hasGeneratedValued;
};
///
// Represents the meta data value stored using the 'named' schema
// The root node should have two operands nodes:
// - the first one is MDString storing the name
// - the second one is actual value
template <class T, class Traits = MDValueTraits<T>> class NamedMetaDataValue {
public:
typedef typename Traits::value_type value_type;
NamedMetaDataValue() : m_pNode(NULL), m_id("") {}
NamedMetaDataValue(llvm::Metadata *pNode) : m_pNode(pNode), m_id(getIdNode(pNode)), m_value(getValueNode(pNode)) {}
NamedMetaDataValue(const char *name) : m_pNode(NULL), m_id(name) {}
NamedMetaDataValue(std::string name) : m_pNode(NULL), m_id(name.c_str()) {}
NamedMetaDataValue(const char *name, const value_type &val) : m_pNode(NULL), m_id(name), m_value(val) {}
operator value_type() { return (value_type)m_value; }
value_type get() const { return m_value.get(); }
void set(const value_type &val) { m_value.set(val); }
bool dirty() const { return m_value.dirty(); }
bool hasValue() const { return m_value.hasValue(); }
void discardChanges() { m_value.discardChanges(); }
void save(llvm::LLVMContext &context, llvm::Metadata *pNode) const {
if (m_pNode == pNode && !dirty()) {
return;
}
if (!hasValue()) {
return;
}
llvm::MDNode *pMDNode = llvm::dyn_cast<llvm::MDNode>(pNode);
IGC_ASSERT_MESSAGE(pMDNode, "Named value parent node is not of MDNode type");
if (pMDNode->getNumOperands() != 2) {
#if 0
pMDNode->replaceAllUsesWith(generateNode(context));
#else
IGC_ASSERT(0);
#endif
return;
}
m_id.save(context, pMDNode->getOperand(0));
m_value.save(context, pMDNode->getOperand(1));
}
llvm::Metadata *generateNode(llvm::LLVMContext &context) const {
llvm::SmallVector<llvm::Metadata *, 2> args;
args.push_back(m_id.generateNode(context));
args.push_back(m_value.generateNode(context));
return llvm::MDNode::get(context, args);
}
NamedMetaDataValue &operator=(llvm::Value *pNode) {
m_pNode = (llvm::Metadata *)pNode;
m_id = getIdNode(pNode);
m_value = getValueNode(pNode);
return *this;
}
NamedMetaDataValue &operator=(const char *name) {
m_pNode = NULL;
m_id = std::string(name);
return *this;
}
NamedMetaDataValue &operator=(std::string name) {
m_pNode = NULL;
m_id = name;
return *this;
}
private:
llvm::Metadata *getIdNode(const llvm::Metadata *pNode) {
if (NULL == pNode) {
return NULL; // this is allowed for optional nodes
}
const llvm::MDNode *const pMDNode = llvm::dyn_cast<const llvm::MDNode>(pNode);
IGC_ASSERT_MESSAGE(nullptr != pMDNode, "Named value parent node is not of MDNode type");
IGC_ASSERT_MESSAGE(1 <= pMDNode->getNumOperands(), "Named value doesn't have a name node");
llvm::MDString *const pIdNode = llvm::dyn_cast<llvm::MDString>(pMDNode->getOperand(0));
IGC_ASSERT_MESSAGE(nullptr != pIdNode, "Named list id node is not a string");
return pIdNode;
}
llvm::Metadata *getValueNode(const llvm::Metadata *pNode) {
if (NULL == pNode) {
return NULL; // this is allowed for optional nodes
}
const llvm::MDNode *const pMDNode = llvm::dyn_cast<const llvm::MDNode>(pNode);
IGC_ASSERT_MESSAGE(nullptr != pMDNode, "Named value parent node is not of MDNode type");
IGC_ASSERT_MESSAGE(2 <= pMDNode->getNumOperands(), "Named value doesn't have a value node");
return pMDNode->getOperand(1).get();
}
private:
llvm::Metadata *m_pNode; // root node initialized during the load
MetaDataValue<std::string> m_id;
MetaDataValue<T, Traits> m_value;
};
} // namespace IGC
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