| // Copyright 2011 the V8 project authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef V8_X64_LITHIUM_GAP_RESOLVER_X64_H_ |
| #define V8_X64_LITHIUM_GAP_RESOLVER_X64_H_ |
| |
| #include "src/v8.h" |
| |
| #include "src/lithium.h" |
| |
| namespace v8 { |
| namespace internal { |
| |
| class LCodeGen; |
| class LGapResolver; |
| |
| class LGapResolver V8_FINAL BASE_EMBEDDED { |
| public: |
| explicit LGapResolver(LCodeGen* owner); |
| |
| // Resolve a set of parallel moves, emitting assembler instructions. |
| void Resolve(LParallelMove* parallel_move); |
| |
| private: |
| // Build the initial list of moves. |
| void BuildInitialMoveList(LParallelMove* parallel_move); |
| |
| // Perform the move at the moves_ index in question (possibly requiring |
| // other moves to satisfy dependencies). |
| void PerformMove(int index); |
| |
| // Emit a move and remove it from the move graph. |
| void EmitMove(int index); |
| |
| // Execute a move by emitting a swap of two operands. The move from |
| // source to destination is removed from the move graph. |
| void EmitSwap(int index); |
| |
| // Verify the move list before performing moves. |
| void Verify(); |
| |
| LCodeGen* cgen_; |
| |
| // List of moves not yet resolved. |
| ZoneList<LMoveOperands> moves_; |
| }; |
| |
| } } // namespace v8::internal |
| |
| #endif // V8_X64_LITHIUM_GAP_RESOLVER_X64_H_ |