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Diffstat (limited to 'Source/JavaScriptCore/jit/Reg.h')
| -rw-r--r-- | Source/JavaScriptCore/jit/Reg.h | 176 |
1 files changed, 0 insertions, 176 deletions
diff --git a/Source/JavaScriptCore/jit/Reg.h b/Source/JavaScriptCore/jit/Reg.h deleted file mode 100644 index 0704e2ec3..000000000 --- a/Source/JavaScriptCore/jit/Reg.h +++ /dev/null @@ -1,176 +0,0 @@ -/* - * Copyright (C) 2014 Apple Inc. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY - * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR - * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR - * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, - * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, - * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR - * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY - * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -#ifndef Reg_h -#define Reg_h - -#if ENABLE(JIT) - -#include "MacroAssembler.h" - -namespace JSC { - -// Reg is a polymorphic register class. It can refer to either integer or float registers. -// Here are some use cases: -// -// GPRReg gpr; -// Reg reg = gpr; -// reg.isSet() == true -// reg.isGPR() == true -// reg.isFPR() == false -// -// for (Reg reg = Reg::first(); reg <= Reg::last(); reg = reg.next()) { -// if (reg.isGPR()) { -// } else /* reg.isFPR() */ { -// } -// } -// -// The above loop could have also used !!reg or reg.isSet() as a condition. - -class Reg { -public: - Reg() - : m_index(invalid()) - { - } - - Reg(MacroAssembler::RegisterID reg) - : m_index(MacroAssembler::registerIndex(reg)) - { - } - - Reg(MacroAssembler::FPRegisterID reg) - : m_index(MacroAssembler::registerIndex(reg)) - { - } - - static Reg fromIndex(unsigned index) - { - Reg result; - result.m_index = index; - return result; - } - - static Reg first() - { - Reg result; - result.m_index = 0; - return result; - } - - static Reg last() - { - Reg result; - result.m_index = MacroAssembler::numberOfRegisters() + MacroAssembler::numberOfFPRegisters() - 1; - return result; - } - - Reg next() const - { - ASSERT(!!*this); - if (*this == last()) - return Reg(); - Reg result; - result.m_index = m_index + 1; - return result; - } - - unsigned index() const { return m_index; } - - bool isSet() const { return m_index != invalid(); } - bool operator!() const { return !isSet(); } - - bool isGPR() const - { - return m_index < MacroAssembler::numberOfRegisters(); - } - - bool isFPR() const - { - return (m_index - MacroAssembler::numberOfRegisters()) < MacroAssembler::numberOfFPRegisters(); - } - - MacroAssembler::RegisterID gpr() const - { - ASSERT(isGPR()); - return static_cast<MacroAssembler::RegisterID>(MacroAssembler::firstRegister() + m_index); - } - - MacroAssembler::FPRegisterID fpr() const - { - ASSERT(isFPR()); - return static_cast<MacroAssembler::FPRegisterID>( - MacroAssembler::firstFPRegister() + (m_index - MacroAssembler::numberOfRegisters())); - } - - bool operator==(const Reg& other) const - { - return m_index == other.m_index; - } - - bool operator!=(const Reg& other) const - { - return m_index != other.m_index; - } - - bool operator<(const Reg& other) const - { - return m_index < other.m_index; - } - - bool operator>(const Reg& other) const - { - return m_index > other.m_index; - } - - bool operator<=(const Reg& other) const - { - return m_index <= other.m_index; - } - - bool operator>=(const Reg& other) const - { - return m_index >= other.m_index; - } - - unsigned hash() const - { - return m_index; - } - - void dump(PrintStream&) const; - -private: - static uint8_t invalid() { return 0xff; } - - uint8_t m_index; -}; - -} // namespace JSC - -#endif // ENABLE(JIT) - -#endif // Reg_h - |