1 // Copyright 2011 the V8 project authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef V8_CRANKSHAFT_X64_LITHIUM_GAP_RESOLVER_X64_H_ 6 #define V8_CRANKSHAFT_X64_LITHIUM_GAP_RESOLVER_X64_H_ 7 8 #include "src/crankshaft/lithium.h" 9 10 namespace v8 { 11 namespace internal { 12 13 class LCodeGen; 14 class LGapResolver; 15 16 class LGapResolver final BASE_EMBEDDED { 17 public: 18 explicit LGapResolver(LCodeGen* owner); 19 20 // Resolve a set of parallel moves, emitting assembler instructions. 21 void Resolve(LParallelMove* parallel_move); 22 23 private: 24 // Build the initial list of moves. 25 void BuildInitialMoveList(LParallelMove* parallel_move); 26 27 // Perform the move at the moves_ index in question (possibly requiring 28 // other moves to satisfy dependencies). 29 void PerformMove(int index); 30 31 // Emit a move and remove it from the move graph. 32 void EmitMove(int index); 33 34 // Execute a move by emitting a swap of two operands. The move from 35 // source to destination is removed from the move graph. 36 void EmitSwap(int index); 37 38 // Verify the move list before performing moves. 39 void Verify(); 40 41 LCodeGen* cgen_; 42 43 // List of moves not yet resolved. 44 ZoneList<LMoveOperands> moves_; 45 }; 46 47 } // namespace internal 48 } // namespace v8 49 50 #endif // V8_CRANKSHAFT_X64_LITHIUM_GAP_RESOLVER_X64_H_ 51
