text: /*
   * Copyright (c) 2012-2015 Advanced Micro Devices, Inc.
   * All rights reserved.
   *
   * For use for simulation and test purposes only
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions are met:
   *
   * 1. Redistributions of source code must retain the above copyright notice,
   * this list of conditions and the following disclaimer.
   *
   * 2. Redistributions in binary form must reproduce the above copyright notice,
   * this list of conditions and the following disclaimer in the documentation
   * and/or other materials provided with the distribution.
   *
   * 3. Neither the name of the copyright holder nor the names of its contributors
   * may be used to endorse or promote products derived from this software
   * without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
   * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
   * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   * POSSIBILITY OF SUCH DAMAGE.
   *
   * Author: Steve Reinhardt
   */
  
  #ifndef __KERNEL_CFG_HH__
  #define __KERNEL_CFG_HH__
  
  #include <cstddef>
  #include <cstdint>
  #include <memory>
  #include <set>
  #include <vector>
  
  
  class GPUStaticInst;
  class HsailCode;
  
  struct BasicBlock
  {
      BasicBlock(uint32_t num, GPUStaticInst* begin) :
              id(num), size(0), firstInstruction(begin)
      {
      }
  
      bool
      isEntry() const
      {
          return !id;
      }
  
      bool
      isExit() const
      {
          return !size;
      }
  
      /**
       * Unique identifier for the block within a given kernel.
       */
      const uint32_t id;
  
      /**
       * Number of instructions contained in the block
       */
      size_t size;
  
      /**
       * Pointer to first instruction of the block.
       */
      GPUStaticInst* firstInstruction;
  
      /**
       * Identifiers of the blocks that follow (are reachable from) this block.
       */
      std::set<uint32_t> successorIds;
  
      /**
       * Identifiers of the blocks that will be visited from this block.
       */
      std::set<uint32_t> postDominatorIds;
  };
  
  class ControlFlowInfo
  {
  public:
  
      /**
       * Compute immediate post-dominator instruction for kernel instructions.
       */
      static void assignImmediatePostDominators(
              const std::vector<GPUStaticInst*>& instructions);
  
  private:
      ControlFlowInfo(const std::vector<GPUStaticInst*>& instructions);
  
      GPUStaticInst* lastInstruction(const BasicBlock* block) const;
  
      BasicBlock* basicBlock(int inst_addr) const;
  
      BasicBlock* postDominator(const BasicBlock* block) const;
  
      void createBasicBlocks();
  
      void connectBasicBlocks();
  
      void findPostDominators();
  
      void findImmediatePostDominators();
  
      void printBasicBlocks() const;
  
      void printBasicBlockDot() const;
  
      void printPostDominators() const;
  
      void printImmediatePostDominators() const;
  
      std::vector<std::unique_ptr<BasicBlock>> basicBlocks;
      std::vector<GPUStaticInst*> instructions;
  };
  
  #endif // __KERNEL_CFG_HH__
  