LLHDDialect.cpp

Go to the documentation of this file.

//===- LLHDDialect.cpp - Implement the LLHD dialect -----------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This file implements the LLHD dialect.
//
//===----------------------------------------------------------------------===//
 
#include "circt/Dialect/LLHD/IR/LLHDDialect.h"
#include "circt/Dialect/HW/HWOps.h"
#include "circt/Dialect/LLHD/IR/LLHDOps.h"
#include "circt/Dialect/LLHD/IR/LLHDTypes.h"
#include "circt/Support/LLVM.h"
#include "mlir/IR/DialectImplementation.h"
#include "mlir/Transforms/InliningUtils.h"
 
using namespace circt;
using namespace circt::llhd;
 
//===----------------------------------------------------------------------===//
// LLHDDialect Interfaces
//===----------------------------------------------------------------------===//
 
namespace {
/// This class defines the interface for handling inlining with LLHD operations.
struct LLHDInlinerInterface : public mlir::DialectInlinerInterface {
  using mlir::DialectInlinerInterface::DialectInlinerInterface;
 
  //===--------------------------------------------------------------------===//
  // Analysis Hooks
  //===--------------------------------------------------------------------===//
 
  /// All operations within LLHD can be inlined.
  bool isLegalToInline(Operation *, Region *, bool, IRMapping &) const final {
    return true;
  }
 
  bool isLegalToInline(Region *, Region *src, bool, IRMapping &) const final {
    return false;
  }
};
} // end anonymous namespace
 
//===----------------------------------------------------------------------===//
// LLHD Dialect
//===----------------------------------------------------------------------===//
 
void LLHDDialect::initialize() {
  registerTypes();
  registerAttributes();
 
  addOperations<
#define GET_OP_LIST
#include "circt/Dialect/LLHD/IR/LLHD.cpp.inc"
      >();
 
  addInterfaces<LLHDInlinerInterface>();
 
  mlir::DialectRegistry registry;
  registerDestructableIntegerExternalModel(registry);
  getContext()->appendDialectRegistry(registry);
}
 
Operation *LLHDDialect::materializeConstant(OpBuilder &builder, Attribute value,
                                            Type type, Location loc) {
  if (auto timeAttr = dyn_cast<TimeAttr>(value))
    return llhd::ConstantTimeOp::create(builder, loc, type, timeAttr);
 
  if (auto intAttr = dyn_cast<IntegerAttr>(value))
    return hw::ConstantOp::create(builder, loc, type, intAttr);
 
  return nullptr;
}
 
#include "circt/Dialect/LLHD/IR/LLHDDialect.cpp.inc"