1/* 2 * Copyright (C) 2012, 2013 Apple Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26#ifndef DFGSilentRegisterSavePlan_h 27#define DFGSilentRegisterSavePlan_h 28 29#include <wtf/Platform.h> 30 31#if ENABLE(DFG_JIT) 32 33#include "DFGCommon.h" 34#include "DFGFPRInfo.h" 35#include "DFGGPRInfo.h" 36 37namespace JSC { namespace DFG { 38 39enum SilentSpillAction { 40 DoNothingForSpill, 41 Store32Tag, 42 Store32Payload, 43 StorePtr, 44 Store64, 45 StoreDouble 46}; 47 48enum SilentFillAction { 49 DoNothingForFill, 50 SetInt32Constant, 51 SetBooleanConstant, 52 SetCellConstant, 53 SetTrustedJSConstant, 54 SetJSConstant, 55 SetJSConstantTag, 56 SetJSConstantPayload, 57 SetInt32Tag, 58 SetCellTag, 59 SetBooleanTag, 60 SetDoubleConstant, 61 Load32Tag, 62 Load32Payload, 63 Load32PayloadBoxInt, 64 LoadPtr, 65 Load64, 66 LoadDouble, 67 LoadDoubleBoxDouble, 68 LoadJSUnboxDouble 69}; 70 71class SilentRegisterSavePlan { 72public: 73 SilentRegisterSavePlan() 74 : m_spillAction(DoNothingForSpill) 75 , m_fillAction(DoNothingForFill) 76 , m_register(-1) 77 , m_node(0) 78 { 79 } 80 81 SilentRegisterSavePlan( 82 SilentSpillAction spillAction, 83 SilentFillAction fillAction, 84 Node* node, 85 GPRReg gpr) 86 : m_spillAction(spillAction) 87 , m_fillAction(fillAction) 88 , m_register(gpr) 89 , m_node(node) 90 { 91 } 92 93 SilentRegisterSavePlan( 94 SilentSpillAction spillAction, 95 SilentFillAction fillAction, 96 Node* node, 97 FPRReg fpr) 98 : m_spillAction(spillAction) 99 , m_fillAction(fillAction) 100 , m_register(fpr) 101 , m_node(node) 102 { 103 } 104 105 SilentSpillAction spillAction() const { return static_cast<SilentSpillAction>(m_spillAction); } 106 SilentFillAction fillAction() const { return static_cast<SilentFillAction>(m_fillAction); } 107 108 Node* node() const { return m_node; } 109 110 GPRReg gpr() const { return static_cast<GPRReg>(m_register); } 111 FPRReg fpr() const { return static_cast<FPRReg>(m_register); } 112 113private: 114 int8_t m_spillAction; 115 int8_t m_fillAction; 116 int8_t m_register; 117 Node* m_node; 118}; 119 120} } // namespace JSC::DFG 121 122#endif // ENABLE(DFG_JIT) 123 124#endif // DFGSilentRegisterSavePlan_h 125 126