1 files changed, 0 insertions, 208 deletions
diff --git a/Source/JavaScriptCore/jit/ScratchRegisterAllocator.cpp b/Source/JavaScriptCore/jit/ScratchRegisterAllocator.cpp
deleted file mode 100644
index b99f9400b..000000000
--- a/Source/JavaScriptCore/jit/ScratchRegisterAllocator.cpp
+++ /dev/null
@@ -1,208 +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. 
- */
-
-#include "config.h"
-#include "ScratchRegisterAllocator.h"
-
-#if ENABLE(JIT)
-
-#include "JSCInlines.h"
-#include "VM.h"
-
-namespace JSC {
-
-ScratchRegisterAllocator::ScratchRegisterAllocator(const RegisterSet& usedRegisters)
-    : m_usedRegisters(usedRegisters)
-    , m_numberOfReusedRegisters(0)
-{
-}
-
-ScratchRegisterAllocator::~ScratchRegisterAllocator() { }
-
-void ScratchRegisterAllocator::lock(GPRReg reg)
-{
-    unsigned index = GPRInfo::toIndex(reg);
-    if (index == GPRInfo::InvalidIndex)
-        return;
-    m_lockedRegisters.setGPRByIndex(index);
-}
-
-void ScratchRegisterAllocator::lock(FPRReg reg)
-{
-    unsigned index = FPRInfo::toIndex(reg);
-    if (index == FPRInfo::InvalidIndex)
-        return;
-    m_lockedRegisters.setFPRByIndex(index);
-}
-
-template<typename BankInfo>
-typename BankInfo::RegisterType ScratchRegisterAllocator::allocateScratch()
-{
-    // First try to allocate a register that is totally free.
-    for (unsigned i = 0; i < BankInfo::numberOfRegisters; ++i) {
-        typename BankInfo::RegisterType reg = BankInfo::toRegister(i);
-        if (!m_lockedRegisters.get(reg)
-            && !m_usedRegisters.get(reg)
-            && !m_scratchRegisters.get(reg)) {
-            m_scratchRegisters.set(reg);
-            return reg;
-        }
-    }
-        
-    // Since that failed, try to allocate a register that is not yet
-    // locked or used for scratch.
-    for (unsigned i = 0; i < BankInfo::numberOfRegisters; ++i) {
-        typename BankInfo::RegisterType reg = BankInfo::toRegister(i);
-        if (!m_lockedRegisters.get(reg) && !m_scratchRegisters.get(reg)) {
-            m_scratchRegisters.set(reg);
-            m_numberOfReusedRegisters++;
-            return reg;
-        }
-    }
-        
-    // We failed.
-    CRASH();
-    // Make some silly compilers happy.
-    return static_cast<typename BankInfo::RegisterType>(-1);
-}
-
-GPRReg ScratchRegisterAllocator::allocateScratchGPR() { return allocateScratch<GPRInfo>(); }
-FPRReg ScratchRegisterAllocator::allocateScratchFPR() { return allocateScratch<FPRInfo>(); }
-
-void ScratchRegisterAllocator::preserveReusedRegistersByPushing(MacroAssembler& jit)
-{
-    if (!didReuseRegisters())
-        return;
-        
-    for (unsigned i = 0; i < FPRInfo::numberOfRegisters; ++i) {
-        FPRReg reg = FPRInfo::toRegister(i);
-        if (m_scratchRegisters.getFPRByIndex(i) && m_usedRegisters.get(reg))
-            jit.pushToSave(reg);
-    }
-    for (unsigned i = 0; i < GPRInfo::numberOfRegisters; ++i) {
-        GPRReg reg = GPRInfo::toRegister(i);
-        if (m_scratchRegisters.getGPRByIndex(i) && m_usedRegisters.get(reg))
-            jit.pushToSave(reg);
-    }
-}
-
-void ScratchRegisterAllocator::restoreReusedRegistersByPopping(MacroAssembler& jit)
-{
-    if (!didReuseRegisters())
-        return;
-        
-    for (unsigned i = GPRInfo::numberOfRegisters; i--;) {
-        GPRReg reg = GPRInfo::toRegister(i);
-        if (m_scratchRegisters.getGPRByIndex(i) && m_usedRegisters.get(reg))
-            jit.popToRestore(reg);
-    }
-    for (unsigned i = FPRInfo::numberOfRegisters; i--;) {
-        FPRReg reg = FPRInfo::toRegister(i);
-        if (m_scratchRegisters.getFPRByIndex(i) && m_usedRegisters.get(reg))
-            jit.popToRestore(reg);
-    }
-}
-
-RegisterSet ScratchRegisterAllocator::usedRegistersForCall() const
-{
-    RegisterSet result = m_usedRegisters;
-    result.exclude(RegisterSet::calleeSaveRegisters());
-    result.exclude(RegisterSet::stackRegisters());
-    result.exclude(RegisterSet::reservedHardwareRegisters());
-    return result;
-}
-
-unsigned ScratchRegisterAllocator::desiredScratchBufferSizeForCall() const
-{
-    return usedRegistersForCall().numberOfSetRegisters() * sizeof(JSValue);
-}
-
-void ScratchRegisterAllocator::preserveUsedRegistersToScratchBufferForCall(MacroAssembler& jit, ScratchBuffer* scratchBuffer, GPRReg scratchGPR)
-{
-    RegisterSet usedRegisters = usedRegistersForCall();
-    if (!usedRegisters.numberOfSetRegisters())
-        return;
-    
-    unsigned count = 0;
-    for (GPRReg reg = MacroAssembler::firstRegister(); reg <= MacroAssembler::lastRegister(); reg = MacroAssembler::nextRegister(reg)) {
-        if (usedRegisters.get(reg))
-            jit.storePtr(reg, static_cast<EncodedJSValue*>(scratchBuffer->dataBuffer()) + (count++));
-        if (GPRInfo::toIndex(reg) != GPRInfo::InvalidIndex
-            && scratchGPR == InvalidGPRReg
-            && !m_lockedRegisters.get(reg) && !m_scratchRegisters.get(reg))
-            scratchGPR = reg;
-    }
-    RELEASE_ASSERT(scratchGPR != InvalidGPRReg);
-    for (FPRReg reg = MacroAssembler::firstFPRegister(); reg <= MacroAssembler::lastFPRegister(); reg = MacroAssembler::nextFPRegister(reg)) {
-        if (usedRegisters.get(reg)) {
-            jit.move(MacroAssembler::TrustedImmPtr(static_cast<EncodedJSValue*>(scratchBuffer->dataBuffer()) + (count++)), scratchGPR);
-            jit.storeDouble(reg, scratchGPR);
-        }
-    }
-    RELEASE_ASSERT(count * sizeof(JSValue) == desiredScratchBufferSizeForCall());
-    
-    jit.move(MacroAssembler::TrustedImmPtr(scratchBuffer->activeLengthPtr()), scratchGPR);
-    jit.storePtr(MacroAssembler::TrustedImmPtr(static_cast<size_t>(count * sizeof(JSValue))), scratchGPR);
-}
-
-void ScratchRegisterAllocator::restoreUsedRegistersFromScratchBufferForCall(MacroAssembler& jit, ScratchBuffer* scratchBuffer, GPRReg scratchGPR)
-{
-    RegisterSet usedRegisters = usedRegistersForCall();
-    if (!usedRegisters.numberOfSetRegisters())
-        return;
-    
-    if (scratchGPR == InvalidGPRReg) {
-        // Find a scratch register.
-        for (unsigned i = GPRInfo::numberOfRegisters; i--;) {
-            if (m_lockedRegisters.getGPRByIndex(i) || m_scratchRegisters.getGPRByIndex(i))
-                continue;
-            scratchGPR = GPRInfo::toRegister(i);
-            break;
-        }
-    }
-    RELEASE_ASSERT(scratchGPR != InvalidGPRReg);
-    
-    jit.move(MacroAssembler::TrustedImmPtr(scratchBuffer->activeLengthPtr()), scratchGPR);
-    jit.storePtr(MacroAssembler::TrustedImmPtr(0), scratchGPR);
-
-    // Restore double registers first.
-    unsigned count = usedRegisters.numberOfSetGPRs();
-    for (FPRReg reg = MacroAssembler::firstFPRegister(); reg <= MacroAssembler::lastFPRegister(); reg = MacroAssembler::nextFPRegister(reg)) {
-        if (usedRegisters.get(reg)) {
-            jit.move(MacroAssembler::TrustedImmPtr(static_cast<EncodedJSValue*>(scratchBuffer->dataBuffer()) + (count++)), scratchGPR);
-            jit.loadDouble(scratchGPR, reg);
-        }
-    }
-        
-    count = 0;
-    for (GPRReg reg = MacroAssembler::firstRegister(); reg <= MacroAssembler::lastRegister(); reg = MacroAssembler::nextRegister(reg)) {
-        if (usedRegisters.get(reg))
-            jit.loadPtr(static_cast<EncodedJSValue*>(scratchBuffer->dataBuffer()) + (count++), reg);
-    }
-}
-
-} // namespace JSC
-
-#endif // ENABLE(JIT)