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Diffstat (limited to 'src/3rdparty/v8/src/register-allocator-inl.h')
-rw-r--r-- | src/3rdparty/v8/src/register-allocator-inl.h | 141 |
1 files changed, 141 insertions, 0 deletions
diff --git a/src/3rdparty/v8/src/register-allocator-inl.h b/src/3rdparty/v8/src/register-allocator-inl.h new file mode 100644 index 0000000..5a68ab0 --- /dev/null +++ b/src/3rdparty/v8/src/register-allocator-inl.h @@ -0,0 +1,141 @@ +// Copyright 2009 the V8 project authors. All rights reserved. +// Redistribution and use in source and binary forms, with or without +// modification, are permitted provided that the following conditions are +// met: +// +// * Redistributions of source code must retain the above copyright +// notice, this list of conditions and the following disclaimer. +// * 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. +// * Neither the name of Google Inc. nor the names of its +// contributors may be used to endorse or promote products derived +// from this software without specific prior written permission. +// +// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +// "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 THE COPYRIGHT +// OWNER 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 V8_REGISTER_ALLOCATOR_INL_H_ +#define V8_REGISTER_ALLOCATOR_INL_H_ + +#include "codegen.h" +#include "register-allocator.h" + +#if V8_TARGET_ARCH_IA32 +#include "ia32/register-allocator-ia32-inl.h" +#elif V8_TARGET_ARCH_X64 +#include "x64/register-allocator-x64-inl.h" +#elif V8_TARGET_ARCH_ARM +#include "arm/register-allocator-arm-inl.h" +#elif V8_TARGET_ARCH_MIPS +#include "mips/register-allocator-mips-inl.h" +#else +#error Unsupported target architecture. +#endif + + +namespace v8 { +namespace internal { + +Result::Result(const Result& other) { + other.CopyTo(this); +} + + +Result& Result::operator=(const Result& other) { + if (this != &other) { + Unuse(); + other.CopyTo(this); + } + return *this; +} + + +Result::~Result() { + if (is_register()) { + CodeGeneratorScope::Current(Isolate::Current())->allocator()->Unuse(reg()); + } +} + + +void Result::Unuse() { + if (is_register()) { + CodeGeneratorScope::Current(Isolate::Current())->allocator()->Unuse(reg()); + } + invalidate(); +} + + +void Result::CopyTo(Result* destination) const { + destination->value_ = value_; + if (is_register()) { + CodeGeneratorScope::Current(Isolate::Current())->allocator()->Use(reg()); + } +} + + +bool RegisterAllocator::is_used(Register reg) { + return registers_.is_used(ToNumber(reg)); +} + + +int RegisterAllocator::count(Register reg) { + return registers_.count(ToNumber(reg)); +} + + +void RegisterAllocator::Use(Register reg) { + registers_.Use(ToNumber(reg)); +} + + +void RegisterAllocator::Unuse(Register reg) { + registers_.Unuse(ToNumber(reg)); +} + + +TypeInfo Result::type_info() const { + ASSERT(is_valid()); + return TypeInfo::FromInt(TypeInfoField::decode(value_)); +} + + +void Result::set_type_info(TypeInfo info) { + ASSERT(is_valid()); + value_ &= ~TypeInfoField::mask(); + value_ |= TypeInfoField::encode(info.ToInt()); +} + + +bool Result::is_number() const { + return type_info().IsNumber(); +} + + +bool Result::is_smi() const { + return type_info().IsSmi(); +} + + +bool Result::is_integer32() const { + return type_info().IsInteger32(); +} + + +bool Result::is_double() const { + return type_info().IsDouble(); +} + +} } // namespace v8::internal + +#endif // V8_REGISTER_ALLOCATOR_INL_H_ |