7b51dc7edb
flow graph code completely. Add new AST node for null compares and use it to make the full codegens better at generating code for null comparisons. Review URL: http://codereview.chromium.org/3146037 git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5323 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
81 lines
2.8 KiB
C++
81 lines
2.8 KiB
C++
// Copyright 2010 the V8 project authors. All rights reserved.
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following
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// disclaimer in the documentation and/or other materials provided
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// with the distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#include "v8.h"
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#include "ast.h"
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namespace v8 {
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namespace internal {
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BreakableStatement::BreakableStatement(ZoneStringList* labels, Type type)
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: labels_(labels), type_(type) {
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ASSERT(labels == NULL || labels->length() > 0);
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}
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SwitchStatement::SwitchStatement(ZoneStringList* labels)
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: BreakableStatement(labels, TARGET_FOR_ANONYMOUS),
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tag_(NULL), cases_(NULL) {
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}
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IterationStatement::IterationStatement(ZoneStringList* labels)
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: BreakableStatement(labels, TARGET_FOR_ANONYMOUS),
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body_(NULL),
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continue_target_(JumpTarget::BIDIRECTIONAL) {
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}
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Block::Block(ZoneStringList* labels, int capacity, bool is_initializer_block)
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: BreakableStatement(labels, TARGET_FOR_NAMED_ONLY),
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statements_(capacity),
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is_initializer_block_(is_initializer_block) {
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}
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ForStatement::ForStatement(ZoneStringList* labels)
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: IterationStatement(labels),
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init_(NULL),
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cond_(NULL),
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next_(NULL),
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may_have_function_literal_(true),
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loop_variable_(NULL) {
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}
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ForInStatement::ForInStatement(ZoneStringList* labels)
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: IterationStatement(labels), each_(NULL), enumerable_(NULL) {
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}
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DoWhileStatement::DoWhileStatement(ZoneStringList* labels)
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: IterationStatement(labels), cond_(NULL), condition_position_(-1) {
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}
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} } // namespace v8::internal
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