//===----------------------------------------------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//

#include "npcomp/Dialect/RefBackend/IR/RefBackendDialect.h"
#include "mlir/Transforms/InliningUtils.h"
#include "npcomp/Dialect/RefBackend/IR/RefBackendOps.h"

using namespace mlir;
using namespace mlir::NPCOMP::refback;

//===----------------------------------------------------------------------===//
// RefBackendDialect Dialect Interfaces
//===----------------------------------------------------------------------===//

namespace {
struct RefBackendInlinerInterface : public DialectInlinerInterface {
  using DialectInlinerInterface::DialectInlinerInterface;
  bool isLegalToInline(Region *dest, Region *src,
                       BlockAndValueMapping &valueMapping) const final {
    return true;
  }
  bool isLegalToInline(Operation *, Region *,
                       BlockAndValueMapping &) const final {
    return true;
  }
  void handleTerminator(Operation *op,
                        ArrayRef<Value> valuesToRepl) const final {
    auto retValOp = dyn_cast<YieldOp>(op);
    if (!retValOp)
      return;

    for (auto retValue : llvm::zip(valuesToRepl, retValOp.getOperands())) {
      std::get<0>(retValue).replaceAllUsesWith(std::get<1>(retValue));
    }
  }
};
} // end anonymous namespace

void RefBackendDialect::initialize() {
  addOperations<
#define GET_OP_LIST
#include "npcomp/Dialect/RefBackend/IR/RefBackendOps.cpp.inc"
      >();
  addInterfaces<RefBackendInlinerInterface>();
}