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75 lines
2.7 KiB
75 lines
2.7 KiB
14 years ago
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// Copyright 2011 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_X64_LITHIUM_GAP_RESOLVER_X64_H_
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#define V8_X64_LITHIUM_GAP_RESOLVER_X64_H_
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#include "v8.h"
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#include "lithium.h"
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namespace v8 {
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namespace internal {
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class LCodeGen;
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class LGapResolver;
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class LGapResolver BASE_EMBEDDED {
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public:
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explicit LGapResolver(LCodeGen* owner);
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// Resolve a set of parallel moves, emitting assembler instructions.
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void Resolve(LParallelMove* parallel_move);
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private:
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// Build the initial list of moves.
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void BuildInitialMoveList(LParallelMove* parallel_move);
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// Perform the move at the moves_ index in question (possibly requiring
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// other moves to satisfy dependencies).
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void PerformMove(int index);
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// Emit a move and remove it from the move graph.
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void EmitMove(int index);
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// Execute a move by emitting a swap of two operands. The move from
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// source to destination is removed from the move graph.
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void EmitSwap(int index);
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// Verify the move list before performing moves.
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void Verify();
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LCodeGen* cgen_;
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// List of moves not yet resolved.
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ZoneList<LMoveOperands> moves_;
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};
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} } // namespace v8::internal
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#endif // V8_X64_LITHIUM_GAP_RESOLVER_X64_H_
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