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main_repo / deps / v8 / src / hydrogen-osr.h @ f230a1cf
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// Copyright 2013 the V8 project authors. All rights reserved.
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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
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following
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// disclaimer in the documentation and/or other materials provided
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// with the distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#ifndef V8_HYDROGEN_OSR_H_
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#define V8_HYDROGEN_OSR_H_
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#include "hydrogen.h" |
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#include "ast.h" |
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#include "zone.h" |
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namespace v8 { |
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namespace internal { |
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// Responsible for building graph parts related to OSR and otherwise
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// setting up the graph to do an OSR compile.
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class HOsrBuilder : public ZoneObject { |
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public:
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explicit HOsrBuilder(HOptimizedGraphBuilder* builder) |
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: unoptimized_frame_slots_(0),
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builder_(builder), |
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osr_entry_(NULL),
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osr_loop_entry_(NULL),
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osr_values_(NULL) { }
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// Creates the loop entry block for the given statement, setting up OSR
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// entries as necessary, and sets the current block to the new block.
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HBasicBlock* BuildOsrLoopEntry(IterationStatement* statement); |
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// Process the hydrogen graph after it has been completed, performing
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// any OSR-specific cleanups or changes.
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void FinishGraph();
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// Process the OSR values and phis after initial graph optimization.
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void FinishOsrValues();
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// Return the number of slots in the unoptimized frame at the entry to OSR.
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int UnoptimizedFrameSlots() const { |
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return unoptimized_frame_slots_;
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} |
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bool HasOsrEntryAt(IterationStatement* statement);
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private:
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int unoptimized_frame_slots_;
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HOptimizedGraphBuilder* builder_; |
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HBasicBlock* osr_entry_; |
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HBasicBlock* osr_loop_entry_; |
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ZoneList<HUnknownOSRValue*>* osr_values_; |
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}; |
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} } // namespace v8::internal
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#endif // V8_HYDROGEN_OSR_H_ |