2016-01-19 20:28:22 +01:00
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/*
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* Copyright (c) 2012-2015 Advanced Micro Devices, Inc.
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* All rights reserved.
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*
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* For use for simulation and test purposes only
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* 3. Neither the name of the copyright holder nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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* Author: Steve Reinhardt
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*/
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#ifndef __KERNEL_CFG_HH__
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#define __KERNEL_CFG_HH__
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#include <cstddef>
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#include <cstdint>
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#include <memory>
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#include <set>
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#include <vector>
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class GPUStaticInst;
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class HsailCode;
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struct BasicBlock
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{
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BasicBlock(uint32_t num, GPUStaticInst* begin) :
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id(num), size(0), firstInstruction(begin)
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{
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}
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bool
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isEntry() const
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{
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return !id;
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}
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bool
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isExit() const
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{
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return !size;
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}
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/**
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* Unique identifier for the block within a given kernel.
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*/
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const uint32_t id;
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/**
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* Number of instructions contained in the block
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*/
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size_t size;
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/**
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* Pointer to first instruction of the block.
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*/
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GPUStaticInst* firstInstruction;
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/**
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* Identifiers of the blocks that follow (are reachable from) this block.
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*/
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std::set<uint32_t> successorIds;
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/**
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* Identifiers of the blocks that will be visited from this block.
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*/
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std::set<uint32_t> postDominatorIds;
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};
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class ControlFlowInfo
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{
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public:
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/**
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* Compute immediate post-dominator instruction for kernel instructions.
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*/
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static void assignImmediatePostDominators(
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const std::vector<GPUStaticInst*>& instructions);
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private:
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ControlFlowInfo(const std::vector<GPUStaticInst*>& instructions);
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GPUStaticInst* lastInstruction(const BasicBlock* block) const;
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2016-10-27 04:47:43 +02:00
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BasicBlock* basicBlock(int inst_addr) const;
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2016-01-19 20:28:22 +01:00
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BasicBlock* postDominator(const BasicBlock* block) const;
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void createBasicBlocks();
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void connectBasicBlocks();
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void findPostDominators();
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void findImmediatePostDominators();
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void printBasicBlocks() const;
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void printBasicBlockDot() const;
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void printPostDominators() const;
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void printImmediatePostDominators() const;
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std::vector<std::unique_ptr<BasicBlock>> basicBlocks;
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std::vector<GPUStaticInst*> instructions;
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};
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#endif // __KERNEL_CFG_HH__
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