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#include "CompileDAG.h"
#if USE_EMBEDDED_COMPILER
#error #include <llvm/IR/BasicBlock.h>
#error #include <llvm/IR/Function.h>
#error #include <llvm/IR/IRBuilder.h>
#include <Common/SipHash.h>
#include <Common/FieldVisitorToString.h>
#include <Columns/ColumnConst.h>
#include <DataTypes/Native.h>
#include <IO/WriteBufferFromString.h>
#include <IO/Operators.h>
namespace DB
{
ValueWithType CompileDAG::compile(llvm::IRBuilderBase & builder, const ValuesWithType & input_nodes_values) const
{
assert(input_nodes_values.size() == getInputNodesCount());
llvm::IRBuilder<> & b = static_cast<llvm::IRBuilder<> &>(builder);
ValuesWithType compiled_values;
compiled_values.resize(nodes.size());
size_t input_nodes_values_index = 0;
size_t compiled_values_index = 0;
size_t dag_size = nodes.size();
for (size_t i = 0; i < dag_size; ++i)
{
const auto & node = nodes[i];
switch (node.type)
{
case CompileType::CONSTANT:
{
auto * native_value = getColumnNativeValue(b, node.result_type, *node.column, 0);
compiled_values[compiled_values_index] = {native_value, node.result_type};
break;
}
case CompileType::FUNCTION:
{
ValuesWithType temporary_values;
temporary_values.reserve(node.arguments.size());
for (auto argument_index : node.arguments)
{
assert(compiled_values[argument_index].value != nullptr);
temporary_values.emplace_back(compiled_values[argument_index]);
}
compiled_values[compiled_values_index] = {node.function->compile(builder, temporary_values), node.result_type};
break;
}
case CompileType::INPUT:
{
compiled_values[compiled_values_index] = {input_nodes_values[input_nodes_values_index].value, node.result_type};
++input_nodes_values_index;
break;
}
}
++compiled_values_index;
}
return compiled_values.back();
}
std::string CompileDAG::dump() const
{
std::vector<std::string> dumped_values;
dumped_values.resize(nodes.size());
size_t dag_size = nodes.size();
for (size_t i = 0; i < dag_size; ++i)
{
const auto & node = nodes[i];
switch (node.type)
{
case CompileType::CONSTANT:
{
const auto * column = typeid_cast<const ColumnConst *>(node.column.get());
const auto & data = column->getDataColumn();
dumped_values[i] = applyVisitor(FieldVisitorToString(), data[0]) + " : " + node.result_type->getName();
break;
}
case CompileType::FUNCTION:
{
std::string function_dump = node.function->getName();
function_dump += '(';
for (auto argument_index : node.arguments)
{
function_dump += dumped_values[argument_index];
function_dump += ", ";
}
if (!node.arguments.empty())
{
function_dump.pop_back();
function_dump.pop_back();
}
function_dump += ')';
dumped_values[i] = std::move(function_dump);
break;
}
case CompileType::INPUT:
{
dumped_values[i] = node.result_type->getName();
break;
}
}
}
return dumped_values.back();
}
UInt128 CompileDAG::hash() const
{
SipHash hash;
for (const auto & node : nodes)
{
hash.update(node.type);
const auto & result_type_name = node.result_type->getName();
hash.update(result_type_name.size());
hash.update(result_type_name);
switch (node.type)
{
case CompileType::CONSTANT:
{
assert_cast<const ColumnConst *>(node.column.get())->getDataColumn().updateHashWithValue(0, hash);
break;
}
case CompileType::FUNCTION:
{
const auto & function_name = node.function->getName();
hash.update(function_name.size());
hash.update(function_name);
for (size_t arg : node.arguments)
hash.update(arg);
break;
}
case CompileType::INPUT:
{
break;
}
}
}
return hash.get128();
}
}
#endif
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