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Remove more dead code.

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Review URL: http://codereview.chromium.org/7013045

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@7885 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
This commit is contained in:
svenpanne@chromium.org 2011-05-13 09:25:05 +00:00
parent 73c809bb0e
commit edac3d93c2
6 changed files with 1 additions and 311 deletions
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1
src/SConscript
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@ -68,7 +68,6 @@ SOURCES = {
execution.cc
factory.cc
flags.cc
frame-element.cc
frames.cc
full-codegen.cc
func-name-inferrer.cc

1
src/compiler.h
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@ -30,7 +30,6 @@
#include "allocation.h"
#include "ast.h"
#include "frame-element.h"
#include "zone.h"
namespace v8 {

37
src/frame-element.cc
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@ -1,37 +0,0 @@
// 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.
#include "v8.h"
#include "frame-element.h"
#include "zone-inl.h"
namespace v8 {
namespace internal {
} } // namespace v8::internal

270
src/frame-element.h
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@ -1,270 +0,0 @@
// 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_FRAME_ELEMENT_H_
#define V8_FRAME_ELEMENT_H_
#include "allocation.h"
#include "type-info.h"
#include "macro-assembler.h"
#include "zone.h"
namespace v8 {
namespace internal {
// -------------------------------------------------------------------------
// Virtual frame elements
//
// The internal elements of the virtual frames. There are several kinds of
// elements:
// * Invalid: elements that are uninitialized or not actually part
// of the virtual frame. They should not be read.
// * Memory: an element that resides in the actual frame. Its address is
// given by its position in the virtual frame.
// * Register: an element that resides in a register.
// * Constant: an element whose value is known at compile time.
class FrameElement BASE_EMBEDDED {
public:
enum SyncFlag {
NOT_SYNCED,
SYNCED
};
inline TypeInfo type_info() {
// Copied elements do not have type info. Instead
// we have to inspect their backing element in the frame.
ASSERT(!is_copy());
return TypeInfo::FromInt(TypeInfoField::decode(value_));
}
inline void set_type_info(TypeInfo info) {
// Copied elements do not have type info. Instead
// we have to inspect their backing element in the frame.
ASSERT(!is_copy());
value_ = value_ & ~TypeInfoField::mask();
value_ = value_ | TypeInfoField::encode(info.ToInt());
}
// The default constructor creates an invalid frame element.
FrameElement() {
value_ = TypeField::encode(INVALID)
| CopiedField::encode(false)
| SyncedField::encode(false)
| TypeInfoField::encode(TypeInfo::Uninitialized().ToInt())
| DataField::encode(0);
}
// Factory function to construct an invalid frame element.
static FrameElement InvalidElement() {
FrameElement result;
return result;
}
// Factory function to construct an in-memory frame element.
static FrameElement MemoryElement(TypeInfo info) {
FrameElement result(MEMORY, no_reg, SYNCED, info);
return result;
}
// Factory function to construct an in-register frame element.
static FrameElement RegisterElement(Register reg,
SyncFlag is_synced,
TypeInfo info) {
return FrameElement(REGISTER, reg, is_synced, info);
}
// Factory function to construct a frame element whose value is known at
// compile time.
static FrameElement ConstantElement(Handle<Object> value,
SyncFlag is_synced) {
TypeInfo info = TypeInfo::TypeFromValue(value);
FrameElement result(value, is_synced, info);
return result;
}
static bool ConstantPoolOverflowed() {
return !DataField::is_valid(
Isolate::Current()->frame_element_constant_list()->length());
}
bool is_synced() const { return SyncedField::decode(value_); }
void set_sync() {
ASSERT(type() != MEMORY);
value_ = value_ | SyncedField::encode(true);
}
void clear_sync() {
ASSERT(type() != MEMORY);
value_ = value_ & ~SyncedField::mask();
}
bool is_valid() const { return type() != INVALID; }
bool is_memory() const { return type() == MEMORY; }
bool is_register() const { return type() == REGISTER; }
bool is_constant() const { return type() == CONSTANT; }
bool is_copy() const { return type() == COPY; }
bool is_copied() const { return CopiedField::decode(value_); }
void set_copied() { value_ = value_ | CopiedField::encode(true); }
void clear_copied() { value_ = value_ & ~CopiedField::mask(); }
// An untagged int32 FrameElement represents a signed int32
// on the stack. These are only allowed in a side-effect-free
// int32 calculation, and if a non-int32 input shows up or an overflow
// occurs, we bail out and drop all the int32 values.
void set_untagged_int32(bool value) {
value_ &= ~UntaggedInt32Field::mask();
value_ |= UntaggedInt32Field::encode(value);
}
bool is_untagged_int32() const { return UntaggedInt32Field::decode(value_); }
Register reg() const {
ASSERT(is_register());
uint32_t reg = DataField::decode(value_);
Register result;
result.code_ = reg;
return result;
}
Handle<Object> handle() const {
ASSERT(is_constant());
return Isolate::Current()->frame_element_constant_list()->
at(DataField::decode(value_));
}
int index() const {
ASSERT(is_copy());
return DataField::decode(value_);
}
bool Equals(FrameElement other) {
uint32_t masked_difference = (value_ ^ other.value_) & ~CopiedField::mask();
if (!masked_difference) {
// The elements are equal if they agree exactly except on copied field.
return true;
} else {
// If two constants have the same value, and agree otherwise, return true.
return !(masked_difference & ~DataField::mask()) &&
is_constant() &&
handle().is_identical_to(other.handle());
}
}
// Test if two FrameElements refer to the same memory or register location.
bool SameLocation(FrameElement* other) {
if (type() == other->type()) {
if (value_ == other->value_) return true;
if (is_constant() && handle().is_identical_to(other->handle())) {
return true;
}
}
return false;
}
// Given a pair of non-null frame element pointers, return one of them
// as an entry frame candidate or null if they are incompatible.
FrameElement* Combine(FrameElement* other) {
// If either is invalid, the result is.
if (!is_valid()) return this;
if (!other->is_valid()) return other;
if (!SameLocation(other)) return NULL;
// If either is unsynced, the result is.
FrameElement* result = is_synced() ? other : this;
return result;
}
private:
enum Type {
INVALID,
MEMORY,
REGISTER,
CONSTANT,
COPY
};
// Used to construct memory and register elements.
FrameElement(Type type,
Register reg,
SyncFlag is_synced,
TypeInfo info) {
value_ = TypeField::encode(type)
| CopiedField::encode(false)
| SyncedField::encode(is_synced != NOT_SYNCED)
| TypeInfoField::encode(info.ToInt())
| DataField::encode(reg.code_ > 0 ? reg.code_ : 0);
}
// Used to construct constant elements.
FrameElement(Handle<Object> value, SyncFlag is_synced, TypeInfo info) {
ZoneObjectList* constant_list =
Isolate::Current()->frame_element_constant_list();
value_ = TypeField::encode(CONSTANT)
| CopiedField::encode(false)
| SyncedField::encode(is_synced != NOT_SYNCED)
| TypeInfoField::encode(info.ToInt())
| DataField::encode(constant_list->length());
constant_list->Add(value);
}
Type type() const { return TypeField::decode(value_); }
void set_type(Type type) {
value_ = value_ & ~TypeField::mask();
value_ = value_ | TypeField::encode(type);
}
void set_index(int new_index) {
ASSERT(is_copy());
value_ = value_ & ~DataField::mask();
value_ = value_ | DataField::encode(new_index);
}
void set_reg(Register new_reg) {
ASSERT(is_register());
value_ = value_ & ~DataField::mask();
value_ = value_ | DataField::encode(new_reg.code_);
}
// Encode type, copied, synced and data in one 32 bit integer.
uint32_t value_;
// Declare BitFields with template parameters <type, start, size>.
class TypeField: public BitField<Type, 0, 3> {};
class CopiedField: public BitField<bool, 3, 1> {};
class SyncedField: public BitField<bool, 4, 1> {};
class UntaggedInt32Field: public BitField<bool, 5, 1> {};
class TypeInfoField: public BitField<int, 6, 7> {};
class DataField: public BitField<uint32_t, 13, 32 - 13> {};
friend class VirtualFrame;
};
} } // namespace v8::internal
#endif // V8_FRAME_ELEMENT_H_

1
src/hydrogen.h
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@ -34,6 +34,7 @@
#include "ast.h"
#include "compiler.h"
#include "hydrogen-instructions.h"
#include "type-info.h"
#include "zone.h"
namespace v8 {

2
tools/gyp/v8.gyp
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@ -453,8 +453,6 @@
'../../src/fixed-dtoa.h',
'../../src/flags.cc',
'../../src/flags.h',
'../../src/frame-element.cc',
'../../src/frame-element.h',
'../../src/frames-inl.h',
'../../src/frames.cc',
'../../src/frames.h',