1/* 2 * Copyright (C) 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 FTLFormattedValue_h 27#define FTLFormattedValue_h 28 29#if ENABLE(FTL_JIT) 30 31#include "FTLAbbreviations.h" 32#include "FTLValueFormat.h" 33 34namespace JSC { namespace FTL { 35 36// This class is mostly used for OSR; it's a way of specifying how a value is formatted 37// in cases where it wouldn't have been obvious from looking at other indicators (like 38// the type of the LLVMValueRef or the type of the DFG::Node). Typically this arises 39// because LLVMValueRef doesn't give us the granularity we need to begin with, and we 40// use this in situations where there is no good way to say what node the value came 41// from. 42 43class FormattedValue { 44public: 45 FormattedValue() 46 : m_format(InvalidValueFormat) 47 , m_value(0) 48 { 49 } 50 51 FormattedValue(ValueFormat format, LValue value) 52 : m_format(format) 53 , m_value(value) 54 { 55 } 56 57 bool operator!() const 58 { 59 ASSERT((m_format == InvalidValueFormat) == !m_value); 60 return m_format == InvalidValueFormat; 61 } 62 63 ValueFormat format() const { return m_format; } 64 LValue value() const { return m_value; } 65 66private: 67 ValueFormat m_format; 68 LValue m_value; 69}; 70 71static inline FormattedValue noValue() { return FormattedValue(); } 72static inline FormattedValue int32Value(LValue value) { return FormattedValue(ValueFormatInt32, value); } 73static inline FormattedValue booleanValue(LValue value) { return FormattedValue(ValueFormatBoolean, value); } 74static inline FormattedValue jsValueValue(LValue value) { return FormattedValue(ValueFormatJSValue, value); } 75static inline FormattedValue doubleValue(LValue value) { return FormattedValue(ValueFormatDouble, value); } 76 77} } // namespace JSC::FTL 78 79#endif // ENABLE(FTL_JIT) 80 81#endif // FTLFormattedValue_h 82 83