Source/JavaScriptCore/jit/RegisterSet.cpp - third_party/webkit - Git at Google

 /*
  * Copyright (C) 2013-2015 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 "RegisterSet.h"

 #if ENABLE(JIT)

 #include "GPRInfo.h"
 #include "MacroAssembler.h"
 #include "JSCInlines.h"
 #include <wtf/CommaPrinter.h>

 namespace JSC {

 RegisterSet RegisterSet::stackRegisters()
 {
     return RegisterSet(
         MacroAssembler::stackPointerRegister,
         MacroAssembler::framePointerRegister);
 }

 RegisterSet RegisterSet::reservedHardwareRegisters()
 {
 #if CPU(ARM64)
 #if PLATFORM(IOS)
     return RegisterSet(ARM64Registers::x18, ARM64Registers::lr);
 #else
     return RegisterSet(ARM64Registers::lr);
 #endif // PLATFORM(IOS)
 #else
     return RegisterSet();
 #endif
 }

 RegisterSet RegisterSet::runtimeRegisters()
 {
 #if USE(JSVALUE64)
     return RegisterSet(GPRInfo::tagTypeNumberRegister, GPRInfo::tagMaskRegister);
 #else
     return RegisterSet();
 #endif
 }

 RegisterSet RegisterSet::specialRegisters()
 {
     return RegisterSet(
         stackRegisters(), reservedHardwareRegisters(), runtimeRegisters());
 }

 RegisterSet RegisterSet::volatileRegistersForJSCall()
 {
     RegisterSet volatileRegisters = allRegisters();
     volatileRegisters.exclude(RegisterSet::stackRegisters());
     volatileRegisters.exclude(RegisterSet::reservedHardwareRegisters());
     volatileRegisters.exclude(RegisterSet::vmCalleeSaveRegisters());
     return volatileRegisters;
 }

 RegisterSet RegisterSet::stubUnavailableRegisters()
 {
     return RegisterSet(specialRegisters(), vmCalleeSaveRegisters());
 }

 RegisterSet RegisterSet::macroScratchRegisters()
 {
 #if CPU(X86_64)
     return RegisterSet(MacroAssembler::s_scratchRegister);
 #elif CPU(ARM64)
     return RegisterSet(MacroAssembler::dataTempRegister, MacroAssembler::memoryTempRegister);
 #elif CPU(MIPS)
     RegisterSet result;
     result.set(MacroAssembler::immTempRegister);
     result.set(MacroAssembler::dataTempRegister);
     result.set(MacroAssembler::addrTempRegister);
     result.set(MacroAssembler::cmpTempRegister);
     return result;
 #else
     return RegisterSet();
 #endif
 }

 RegisterSet RegisterSet::calleeSaveRegisters()
 {
     RegisterSet result;
 #if CPU(X86)
     result.set(X86Registers::ebx);
     result.set(X86Registers::ebp);
     result.set(X86Registers::edi);
     result.set(X86Registers::esi);
 #elif CPU(X86_64)
     result.set(X86Registers::ebx);
     result.set(X86Registers::ebp);
     result.set(X86Registers::r12);
     result.set(X86Registers::r13);
     result.set(X86Registers::r14);
     result.set(X86Registers::r15);
 #elif CPU(ARM_THUMB2)
     result.set(ARMRegisters::r4);
     result.set(ARMRegisters::r5);
     result.set(ARMRegisters::r6);
     result.set(ARMRegisters::r8);
 #if !PLATFORM(IOS)
     result.set(ARMRegisters::r9);
 #endif
     result.set(ARMRegisters::r10);
     result.set(ARMRegisters::r11);
 #elif CPU(ARM_TRADITIONAL)
     result.set(ARMRegisters::r4);
     result.set(ARMRegisters::r5);
     result.set(ARMRegisters::r6);
     result.set(ARMRegisters::r7);
     result.set(ARMRegisters::r8);
     result.set(ARMRegisters::r9);
     result.set(ARMRegisters::r10);
     result.set(ARMRegisters::r11);
 #elif CPU(ARM64)
     // We don't include LR in the set of callee-save registers even though it technically belongs
     // there. This is because we use this set to describe the set of registers that need to be saved
     // beyond what you would save by the platform-agnostic "preserve return address" and "restore
     // return address" operations in CCallHelpers.
     for (
         ARM64Registers::RegisterID reg = ARM64Registers::x19;
         reg <= ARM64Registers::x28;
         reg = static_cast<ARM64Registers::RegisterID>(reg + 1))
         result.set(reg);
     result.set(ARM64Registers::fp);
     for (
         ARM64Registers::FPRegisterID reg = ARM64Registers::q8;
         reg <= ARM64Registers::q15;
         reg = static_cast<ARM64Registers::FPRegisterID>(reg + 1))
         result.set(reg);
 #elif CPU(MIPS)
 #else
     UNREACHABLE_FOR_PLATFORM();
 #endif
     return result;
 }

 RegisterSet RegisterSet::vmCalleeSaveRegisters()
 {
     RegisterSet result;
 #if CPU(X86_64)
     result.set(GPRInfo::regCS0);
     result.set(GPRInfo::regCS1);
     result.set(GPRInfo::regCS2);
     result.set(GPRInfo::regCS3);
     result.set(GPRInfo::regCS4);
 #if OS(WINDOWS)
     result.set(GPRInfo::regCS5);
     result.set(GPRInfo::regCS6);
 #endif
 #elif CPU(ARM64)
     result.set(GPRInfo::regCS0);
     result.set(GPRInfo::regCS1);
     result.set(GPRInfo::regCS2);
     result.set(GPRInfo::regCS3);
     result.set(GPRInfo::regCS4);
     result.set(GPRInfo::regCS5);
     result.set(GPRInfo::regCS6);
     result.set(GPRInfo::regCS7);
     result.set(GPRInfo::regCS8);
     result.set(GPRInfo::regCS9);
     result.set(FPRInfo::fpRegCS0);
     result.set(FPRInfo::fpRegCS1);
     result.set(FPRInfo::fpRegCS2);
     result.set(FPRInfo::fpRegCS3);
     result.set(FPRInfo::fpRegCS4);
     result.set(FPRInfo::fpRegCS5);
     result.set(FPRInfo::fpRegCS6);
     result.set(FPRInfo::fpRegCS7);
 #endif
     return result;
 }

 RegisterSet RegisterSet::llintBaselineCalleeSaveRegisters()
 {
     RegisterSet result;
 #if CPU(X86)
 #elif CPU(X86_64)
 #if !OS(WINDOWS)
     result.set(GPRInfo::regCS2);
     ASSERT(GPRInfo::regCS3 == GPRInfo::tagTypeNumberRegister);
     ASSERT(GPRInfo::regCS4 == GPRInfo::tagMaskRegister);
     result.set(GPRInfo::regCS3);
     result.set(GPRInfo::regCS4);
 #else
     result.set(GPRInfo::regCS4);
     ASSERT(GPRInfo::regCS5 == GPRInfo::tagTypeNumberRegister);
     ASSERT(GPRInfo::regCS6 == GPRInfo::tagMaskRegister);
     result.set(GPRInfo::regCS5);
     result.set(GPRInfo::regCS6);
 #endif
 #elif CPU(ARM_THUMB2)
 #elif CPU(ARM_TRADITIONAL)
 #elif CPU(ARM64)
     result.set(GPRInfo::regCS7);
     ASSERT(GPRInfo::regCS8 == GPRInfo::tagTypeNumberRegister);
     ASSERT(GPRInfo::regCS9 == GPRInfo::tagMaskRegister);
     result.set(GPRInfo::regCS8);
     result.set(GPRInfo::regCS9);
 #elif CPU(MIPS)
 #elif CPU(SH4)
 #else
     UNREACHABLE_FOR_PLATFORM();
 #endif
     return result;
 }

 RegisterSet RegisterSet::dfgCalleeSaveRegisters()
 {
     RegisterSet result;
 #if CPU(X86)
 #elif CPU(X86_64)
     result.set(GPRInfo::regCS0);
     result.set(GPRInfo::regCS1);
     result.set(GPRInfo::regCS2);
 #if !OS(WINDOWS)
     ASSERT(GPRInfo::regCS3 == GPRInfo::tagTypeNumberRegister);
     ASSERT(GPRInfo::regCS4 == GPRInfo::tagMaskRegister);
     result.set(GPRInfo::regCS3);
     result.set(GPRInfo::regCS4);
 #else
     result.set(GPRInfo::regCS3);
     result.set(GPRInfo::regCS4);
     ASSERT(GPRInfo::regCS5 == GPRInfo::tagTypeNumberRegister);
     ASSERT(GPRInfo::regCS6 == GPRInfo::tagMaskRegister);
     result.set(GPRInfo::regCS5);
     result.set(GPRInfo::regCS6);
 #endif
 #elif CPU(ARM_THUMB2)
 #elif CPU(ARM_TRADITIONAL)
 #elif CPU(ARM64)
     ASSERT(GPRInfo::regCS8 == GPRInfo::tagTypeNumberRegister);
     ASSERT(GPRInfo::regCS9 == GPRInfo::tagMaskRegister);
     result.set(GPRInfo::regCS8);
     result.set(GPRInfo::regCS9);
 #elif CPU(MIPS)
 #elif CPU(SH4)
 #else
     UNREACHABLE_FOR_PLATFORM();
 #endif
     return result;
 }

 RegisterSet RegisterSet::ftlCalleeSaveRegisters()
 {
     RegisterSet result;
 #if ENABLE(FTL_JIT)
 #if CPU(X86_64) && !OS(WINDOWS)
     result.set(GPRInfo::regCS0);
     result.set(GPRInfo::regCS1);
     result.set(GPRInfo::regCS2);
     ASSERT(GPRInfo::regCS3 == GPRInfo::tagTypeNumberRegister);
     ASSERT(GPRInfo::regCS4 == GPRInfo::tagMaskRegister);
     result.set(GPRInfo::regCS3);
     result.set(GPRInfo::regCS4);
 #elif CPU(ARM64)
     // B3 might save and use all ARM64 callee saves specified in the ABI.
     result.set(GPRInfo::regCS0);
     result.set(GPRInfo::regCS1);
     result.set(GPRInfo::regCS2);
     result.set(GPRInfo::regCS3);
     result.set(GPRInfo::regCS4);
     result.set(GPRInfo::regCS5);
     result.set(GPRInfo::regCS6);
     result.set(GPRInfo::regCS7);
     ASSERT(GPRInfo::regCS8 == GPRInfo::tagTypeNumberRegister);
     ASSERT(GPRInfo::regCS9 == GPRInfo::tagMaskRegister);
     result.set(GPRInfo::regCS8);
     result.set(GPRInfo::regCS9);
     result.set(FPRInfo::fpRegCS0);
     result.set(FPRInfo::fpRegCS1);
     result.set(FPRInfo::fpRegCS2);
     result.set(FPRInfo::fpRegCS3);
     result.set(FPRInfo::fpRegCS4);
     result.set(FPRInfo::fpRegCS5);
     result.set(FPRInfo::fpRegCS6);
     result.set(FPRInfo::fpRegCS7);
 #else
     UNREACHABLE_FOR_PLATFORM();
 #endif
 #endif
     return result;
 }

 #if ENABLE(WEBASSEMBLY)
 RegisterSet RegisterSet::webAssemblyCalleeSaveRegisters()
 {
     RegisterSet result;
 #if CPU(X86)
 #elif CPU(X86_64)
 #if !OS(WINDOWS)
     ASSERT(GPRInfo::regCS3 == GPRInfo::tagTypeNumberRegister);
     ASSERT(GPRInfo::regCS4 == GPRInfo::tagMaskRegister);
     result.set(GPRInfo::regCS3);
     result.set(GPRInfo::regCS4);
 #else
     ASSERT(GPRInfo::regCS5 == GPRInfo::tagTypeNumberRegister);
     ASSERT(GPRInfo::regCS6 == GPRInfo::tagMaskRegister);
     result.set(GPRInfo::regCS5);
     result.set(GPRInfo::regCS6);
 #endif
 #elif CPU(ARM_THUMB2)
 #elif CPU(ARM_TRADITIONAL)
 #elif CPU(ARM64)
     ASSERT(GPRInfo::regCS8 == GPRInfo::tagTypeNumberRegister);
     ASSERT(GPRInfo::regCS9 == GPRInfo::tagMaskRegister);
     result.set(GPRInfo::regCS8);
     result.set(GPRInfo::regCS9);
 #elif CPU(MIPS)
 #elif CPU(SH4)
 #else
     UNREACHABLE_FOR_PLATFORM();
 #endif
     return result;
 }
 #endif

 RegisterSet RegisterSet::argumentGPRS()
 {
     RegisterSet result;
 #if NUMBER_OF_ARGUMENT_REGISTERS
     for (unsigned i = 0; i < GPRInfo::numberOfArgumentRegisters; i++)
         result.set(GPRInfo::toArgumentRegister(i));
 #endif
     return result;
 }

 RegisterSet RegisterSet::registersToNotSaveForJSCall()
 {
     return RegisterSet(RegisterSet::vmCalleeSaveRegisters(), RegisterSet::stackRegisters(), RegisterSet::reservedHardwareRegisters());
 }

 RegisterSet RegisterSet::registersToNotSaveForCCall()
 {
     return RegisterSet(RegisterSet::calleeSaveRegisters(), RegisterSet::stackRegisters(), RegisterSet::reservedHardwareRegisters());
 }

 RegisterSet RegisterSet::allGPRs()
 {
     RegisterSet result;
     for (MacroAssembler::RegisterID reg = MacroAssembler::firstRegister(); reg <= MacroAssembler::lastRegister(); reg = static_cast<MacroAssembler::RegisterID>(reg + 1))
         result.set(reg);
     return result;
 }

 RegisterSet RegisterSet::allFPRs()
 {
     RegisterSet result;
     for (MacroAssembler::FPRegisterID reg = MacroAssembler::firstFPRegister(); reg <= MacroAssembler::lastFPRegister(); reg = static_cast<MacroAssembler::FPRegisterID>(reg + 1))
         result.set(reg);
     return result;
 }

 RegisterSet RegisterSet::allRegisters()
 {
     RegisterSet result;
     result.merge(allGPRs());
     result.merge(allFPRs());
     return result;
 }

 size_t RegisterSet::numberOfSetGPRs() const
 {
     RegisterSet temp = *this;
     temp.filter(allGPRs());
     return temp.numberOfSetRegisters();
 }

 size_t RegisterSet::numberOfSetFPRs() const
 {
     RegisterSet temp = *this;
     temp.filter(allFPRs());
     return temp.numberOfSetRegisters();
 }

 void RegisterSet::dump(PrintStream& out) const
 {
     CommaPrinter comma;
     out.print("[");
     for (Reg reg = Reg::first(); reg <= Reg::last(); reg = reg.next()) {
         if (get(reg))
             out.print(comma, reg);
     }
     out.print("]");
 }

 } // namespace JSC

 #endif // ENABLE(JIT)
	/*
	* Copyright (C) 2013-2015 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 "RegisterSet.h"

	#if ENABLE(JIT)

	#include "GPRInfo.h"
	#include "MacroAssembler.h"
	#include "JSCInlines.h"
	#include <wtf/CommaPrinter.h>

	namespace JSC {

	RegisterSet RegisterSet::stackRegisters()
	{
	return RegisterSet(
	MacroAssembler::stackPointerRegister,
	MacroAssembler::framePointerRegister);
	}

	RegisterSet RegisterSet::reservedHardwareRegisters()
	{
	#if CPU(ARM64)
	#if PLATFORM(IOS)
	return RegisterSet(ARM64Registers::x18, ARM64Registers::lr);
	#else
	return RegisterSet(ARM64Registers::lr);
	#endif // PLATFORM(IOS)
	#else
	return RegisterSet();
	#endif
	}

	RegisterSet RegisterSet::runtimeRegisters()
	{
	#if USE(JSVALUE64)
	return RegisterSet(GPRInfo::tagTypeNumberRegister, GPRInfo::tagMaskRegister);
	#else
	return RegisterSet();
	#endif
	}

	RegisterSet RegisterSet::specialRegisters()
	{
	return RegisterSet(
	stackRegisters(), reservedHardwareRegisters(), runtimeRegisters());
	}

	RegisterSet RegisterSet::volatileRegistersForJSCall()
	{
	RegisterSet volatileRegisters = allRegisters();
	volatileRegisters.exclude(RegisterSet::stackRegisters());
	volatileRegisters.exclude(RegisterSet::reservedHardwareRegisters());
	volatileRegisters.exclude(RegisterSet::vmCalleeSaveRegisters());
	return volatileRegisters;
	}

	RegisterSet RegisterSet::stubUnavailableRegisters()
	{
	return RegisterSet(specialRegisters(), vmCalleeSaveRegisters());
	}

	RegisterSet RegisterSet::macroScratchRegisters()
	{
	#if CPU(X86_64)
	return RegisterSet(MacroAssembler::s_scratchRegister);
	#elif CPU(ARM64)
	return RegisterSet(MacroAssembler::dataTempRegister, MacroAssembler::memoryTempRegister);
	#elif CPU(MIPS)
	RegisterSet result;
	result.set(MacroAssembler::immTempRegister);
	result.set(MacroAssembler::dataTempRegister);
	result.set(MacroAssembler::addrTempRegister);
	result.set(MacroAssembler::cmpTempRegister);
	return result;
	#else
	return RegisterSet();
	#endif
	}

	RegisterSet RegisterSet::calleeSaveRegisters()
	{
	RegisterSet result;
	#if CPU(X86)
	result.set(X86Registers::ebx);
	result.set(X86Registers::ebp);
	result.set(X86Registers::edi);
	result.set(X86Registers::esi);
	#elif CPU(X86_64)
	result.set(X86Registers::ebx);
	result.set(X86Registers::ebp);
	result.set(X86Registers::r12);
	result.set(X86Registers::r13);
	result.set(X86Registers::r14);
	result.set(X86Registers::r15);
	#elif CPU(ARM_THUMB2)
	result.set(ARMRegisters::r4);
	result.set(ARMRegisters::r5);
	result.set(ARMRegisters::r6);
	result.set(ARMRegisters::r8);
	#if !PLATFORM(IOS)
	result.set(ARMRegisters::r9);
	#endif
	result.set(ARMRegisters::r10);
	result.set(ARMRegisters::r11);
	#elif CPU(ARM_TRADITIONAL)
	result.set(ARMRegisters::r4);
	result.set(ARMRegisters::r5);
	result.set(ARMRegisters::r6);
	result.set(ARMRegisters::r7);
	result.set(ARMRegisters::r8);
	result.set(ARMRegisters::r9);
	result.set(ARMRegisters::r10);
	result.set(ARMRegisters::r11);
	#elif CPU(ARM64)
	// We don't include LR in the set of callee-save registers even though it technically belongs
	// there. This is because we use this set to describe the set of registers that need to be saved
	// beyond what you would save by the platform-agnostic "preserve return address" and "restore
	// return address" operations in CCallHelpers.
	for (
	ARM64Registers::RegisterID reg = ARM64Registers::x19;
	reg <= ARM64Registers::x28;
	reg = static_cast<ARM64Registers::RegisterID>(reg + 1))
	result.set(reg);
	result.set(ARM64Registers::fp);
	for (
	ARM64Registers::FPRegisterID reg = ARM64Registers::q8;
	reg <= ARM64Registers::q15;
	reg = static_cast<ARM64Registers::FPRegisterID>(reg + 1))
	result.set(reg);
	#elif CPU(MIPS)
	#else
	UNREACHABLE_FOR_PLATFORM();
	#endif
	return result;
	}

	RegisterSet RegisterSet::vmCalleeSaveRegisters()
	{
	RegisterSet result;
	#if CPU(X86_64)
	result.set(GPRInfo::regCS0);
	result.set(GPRInfo::regCS1);
	result.set(GPRInfo::regCS2);
	result.set(GPRInfo::regCS3);
	result.set(GPRInfo::regCS4);
	#if OS(WINDOWS)
	result.set(GPRInfo::regCS5);
	result.set(GPRInfo::regCS6);
	#endif
	#elif CPU(ARM64)
	result.set(GPRInfo::regCS0);
	result.set(GPRInfo::regCS1);
	result.set(GPRInfo::regCS2);
	result.set(GPRInfo::regCS3);
	result.set(GPRInfo::regCS4);
	result.set(GPRInfo::regCS5);
	result.set(GPRInfo::regCS6);
	result.set(GPRInfo::regCS7);
	result.set(GPRInfo::regCS8);
	result.set(GPRInfo::regCS9);
	result.set(FPRInfo::fpRegCS0);
	result.set(FPRInfo::fpRegCS1);
	result.set(FPRInfo::fpRegCS2);
	result.set(FPRInfo::fpRegCS3);
	result.set(FPRInfo::fpRegCS4);
	result.set(FPRInfo::fpRegCS5);
	result.set(FPRInfo::fpRegCS6);
	result.set(FPRInfo::fpRegCS7);
	#endif
	return result;
	}

	RegisterSet RegisterSet::llintBaselineCalleeSaveRegisters()
	{
	RegisterSet result;
	#if CPU(X86)
	#elif CPU(X86_64)
	#if !OS(WINDOWS)
	result.set(GPRInfo::regCS2);
	ASSERT(GPRInfo::regCS3 == GPRInfo::tagTypeNumberRegister);
	ASSERT(GPRInfo::regCS4 == GPRInfo::tagMaskRegister);
	result.set(GPRInfo::regCS3);
	result.set(GPRInfo::regCS4);
	#else
	result.set(GPRInfo::regCS4);
	ASSERT(GPRInfo::regCS5 == GPRInfo::tagTypeNumberRegister);
	ASSERT(GPRInfo::regCS6 == GPRInfo::tagMaskRegister);
	result.set(GPRInfo::regCS5);
	result.set(GPRInfo::regCS6);
	#endif
	#elif CPU(ARM_THUMB2)
	#elif CPU(ARM_TRADITIONAL)
	#elif CPU(ARM64)
	result.set(GPRInfo::regCS7);
	ASSERT(GPRInfo::regCS8 == GPRInfo::tagTypeNumberRegister);
	ASSERT(GPRInfo::regCS9 == GPRInfo::tagMaskRegister);
	result.set(GPRInfo::regCS8);
	result.set(GPRInfo::regCS9);
	#elif CPU(MIPS)
	#elif CPU(SH4)
	#else
	UNREACHABLE_FOR_PLATFORM();
	#endif
	return result;
	}

	RegisterSet RegisterSet::dfgCalleeSaveRegisters()
	{
	RegisterSet result;
	#if CPU(X86)
	#elif CPU(X86_64)
	result.set(GPRInfo::regCS0);
	result.set(GPRInfo::regCS1);
	result.set(GPRInfo::regCS2);
	#if !OS(WINDOWS)
	ASSERT(GPRInfo::regCS3 == GPRInfo::tagTypeNumberRegister);
	ASSERT(GPRInfo::regCS4 == GPRInfo::tagMaskRegister);
	result.set(GPRInfo::regCS3);
	result.set(GPRInfo::regCS4);
	#else
	result.set(GPRInfo::regCS3);
	result.set(GPRInfo::regCS4);
	ASSERT(GPRInfo::regCS5 == GPRInfo::tagTypeNumberRegister);
	ASSERT(GPRInfo::regCS6 == GPRInfo::tagMaskRegister);
	result.set(GPRInfo::regCS5);
	result.set(GPRInfo::regCS6);
	#endif
	#elif CPU(ARM_THUMB2)
	#elif CPU(ARM_TRADITIONAL)
	#elif CPU(ARM64)
	ASSERT(GPRInfo::regCS8 == GPRInfo::tagTypeNumberRegister);
	ASSERT(GPRInfo::regCS9 == GPRInfo::tagMaskRegister);
	result.set(GPRInfo::regCS8);
	result.set(GPRInfo::regCS9);
	#elif CPU(MIPS)
	#elif CPU(SH4)
	#else
	UNREACHABLE_FOR_PLATFORM();
	#endif
	return result;
	}

	RegisterSet RegisterSet::ftlCalleeSaveRegisters()
	{
	RegisterSet result;
	#if ENABLE(FTL_JIT)
	#if CPU(X86_64) && !OS(WINDOWS)
	result.set(GPRInfo::regCS0);
	result.set(GPRInfo::regCS1);
	result.set(GPRInfo::regCS2);
	ASSERT(GPRInfo::regCS3 == GPRInfo::tagTypeNumberRegister);
	ASSERT(GPRInfo::regCS4 == GPRInfo::tagMaskRegister);
	result.set(GPRInfo::regCS3);
	result.set(GPRInfo::regCS4);
	#elif CPU(ARM64)
	// B3 might save and use all ARM64 callee saves specified in the ABI.
	result.set(GPRInfo::regCS0);
	result.set(GPRInfo::regCS1);
	result.set(GPRInfo::regCS2);
	result.set(GPRInfo::regCS3);
	result.set(GPRInfo::regCS4);
	result.set(GPRInfo::regCS5);
	result.set(GPRInfo::regCS6);
	result.set(GPRInfo::regCS7);
	ASSERT(GPRInfo::regCS8 == GPRInfo::tagTypeNumberRegister);
	ASSERT(GPRInfo::regCS9 == GPRInfo::tagMaskRegister);
	result.set(GPRInfo::regCS8);
	result.set(GPRInfo::regCS9);
	result.set(FPRInfo::fpRegCS0);
	result.set(FPRInfo::fpRegCS1);
	result.set(FPRInfo::fpRegCS2);
	result.set(FPRInfo::fpRegCS3);
	result.set(FPRInfo::fpRegCS4);
	result.set(FPRInfo::fpRegCS5);
	result.set(FPRInfo::fpRegCS6);
	result.set(FPRInfo::fpRegCS7);
	#else
	UNREACHABLE_FOR_PLATFORM();
	#endif
	#endif
	return result;
	}

	#if ENABLE(WEBASSEMBLY)
	RegisterSet RegisterSet::webAssemblyCalleeSaveRegisters()
	{
	RegisterSet result;
	#if CPU(X86)
	#elif CPU(X86_64)
	#if !OS(WINDOWS)
	ASSERT(GPRInfo::regCS3 == GPRInfo::tagTypeNumberRegister);
	ASSERT(GPRInfo::regCS4 == GPRInfo::tagMaskRegister);
	result.set(GPRInfo::regCS3);
	result.set(GPRInfo::regCS4);
	#else
	ASSERT(GPRInfo::regCS5 == GPRInfo::tagTypeNumberRegister);
	ASSERT(GPRInfo::regCS6 == GPRInfo::tagMaskRegister);
	result.set(GPRInfo::regCS5);
	result.set(GPRInfo::regCS6);
	#endif
	#elif CPU(ARM_THUMB2)
	#elif CPU(ARM_TRADITIONAL)
	#elif CPU(ARM64)
	ASSERT(GPRInfo::regCS8 == GPRInfo::tagTypeNumberRegister);
	ASSERT(GPRInfo::regCS9 == GPRInfo::tagMaskRegister);
	result.set(GPRInfo::regCS8);
	result.set(GPRInfo::regCS9);
	#elif CPU(MIPS)
	#elif CPU(SH4)
	#else
	UNREACHABLE_FOR_PLATFORM();
	#endif
	return result;
	}
	#endif

	RegisterSet RegisterSet::argumentGPRS()
	{
	RegisterSet result;
	#if NUMBER_OF_ARGUMENT_REGISTERS
	for (unsigned i = 0; i < GPRInfo::numberOfArgumentRegisters; i++)
	result.set(GPRInfo::toArgumentRegister(i));
	#endif
	return result;
	}

	RegisterSet RegisterSet::registersToNotSaveForJSCall()
	{
	return RegisterSet(RegisterSet::vmCalleeSaveRegisters(), RegisterSet::stackRegisters(), RegisterSet::reservedHardwareRegisters());
	}

	RegisterSet RegisterSet::registersToNotSaveForCCall()
	{
	return RegisterSet(RegisterSet::calleeSaveRegisters(), RegisterSet::stackRegisters(), RegisterSet::reservedHardwareRegisters());
	}

	RegisterSet RegisterSet::allGPRs()
	{
	RegisterSet result;
	for (MacroAssembler::RegisterID reg = MacroAssembler::firstRegister(); reg <= MacroAssembler::lastRegister(); reg = static_cast<MacroAssembler::RegisterID>(reg + 1))
	result.set(reg);
	return result;
	}

	RegisterSet RegisterSet::allFPRs()
	{
	RegisterSet result;
	for (MacroAssembler::FPRegisterID reg = MacroAssembler::firstFPRegister(); reg <= MacroAssembler::lastFPRegister(); reg = static_cast<MacroAssembler::FPRegisterID>(reg + 1))
	result.set(reg);
	return result;
	}

	RegisterSet RegisterSet::allRegisters()
	{
	RegisterSet result;
	result.merge(allGPRs());
	result.merge(allFPRs());
	return result;
	}

	size_t RegisterSet::numberOfSetGPRs() const
	{
	RegisterSet temp = *this;
	temp.filter(allGPRs());
	return temp.numberOfSetRegisters();
	}

	size_t RegisterSet::numberOfSetFPRs() const
	{
	RegisterSet temp = *this;
	temp.filter(allFPRs());
	return temp.numberOfSetRegisters();
	}

	void RegisterSet::dump(PrintStream& out) const
	{
	CommaPrinter comma;
	out.print("[");
	for (Reg reg = Reg::first(); reg <= Reg::last(); reg = reg.next()) {
	if (get(reg))
	out.print(comma, reg);
	}
	out.print("]");
	}

	} // namespace JSC

	#endif // ENABLE(JIT)