0d906a8bdb
Clean up some zone/isolate handling in AST and its visitors on the way. (Based on https://codereview.chromium.org/103743004/) R=jkummerow@chromium.org, titzer@chromium.org BUG= Review URL: https://codereview.chromium.org/102563004 git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18719 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
111 lines
3.6 KiB
C++
111 lines
3.6 KiB
C++
// Copyright 2013 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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#ifndef V8_TYPING_H_
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#define V8_TYPING_H_
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#include "v8.h"
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#include "allocation.h"
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#include "ast.h"
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#include "compiler.h"
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#include "type-info.h"
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#include "types.h"
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#include "effects.h"
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#include "zone.h"
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#include "scopes.h"
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namespace v8 {
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namespace internal {
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class AstTyper: public AstVisitor {
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public:
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static void Run(CompilationInfo* info);
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void* operator new(size_t size, Zone* zone) {
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return zone->New(static_cast<int>(size));
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}
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void operator delete(void* pointer, Zone* zone) { }
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void operator delete(void* pointer) { }
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DEFINE_AST_VISITOR_SUBCLASS_MEMBERS();
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private:
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explicit AstTyper(CompilationInfo* info);
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Effect ObservedOnStack(Object* value);
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void ObserveTypesAtOsrEntry(IterationStatement* stmt);
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static const int kNoVar = INT_MIN;
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typedef v8::internal::Effects<int, kNoVar> Effects;
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typedef v8::internal::NestedEffects<int, kNoVar> Store;
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CompilationInfo* info_;
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TypeFeedbackOracle oracle_;
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Store store_;
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TypeFeedbackOracle* oracle() { return &oracle_; }
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void NarrowType(Expression* e, Bounds b) {
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e->set_bounds(Bounds::Both(e->bounds(), b, zone()));
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}
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void NarrowLowerType(Expression* e, Type* t) {
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e->set_bounds(Bounds::NarrowLower(e->bounds(), t, zone()));
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}
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Effects EnterEffects() {
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store_ = store_.Push();
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return store_.Top();
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}
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void ExitEffects() { store_ = store_.Pop(); }
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int parameter_index(int index) { return -index - 2; }
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int stack_local_index(int index) { return index; }
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int variable_index(Variable* var) {
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// Stack locals have the range [0 .. l]
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// Parameters have the range [-1 .. p]
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// We map this to [-p-2 .. -1, 0 .. l]
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return var->IsStackLocal() ? stack_local_index(var->index()) :
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var->IsParameter() ? parameter_index(var->index()) : kNoVar;
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}
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void VisitDeclarations(ZoneList<Declaration*>* declarations);
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void VisitStatements(ZoneList<Statement*>* statements);
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#define DECLARE_VISIT(type) virtual void Visit##type(type* node);
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AST_NODE_LIST(DECLARE_VISIT)
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#undef DECLARE_VISIT
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DISALLOW_COPY_AND_ASSIGN(AstTyper);
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};
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} } // namespace v8::internal
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#endif // V8_TYPING_H_
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