2012-02-08 09:56:33 +00:00
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// Copyright 2012 the V8 project authors. All rights reserved.
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2014-04-29 06:42:26 +00:00
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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2008-07-03 15:10:15 +00:00
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2014-06-03 08:12:43 +00:00
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#include "src/compiler.h"
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2010-10-01 14:10:47 +00:00
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2015-03-19 12:39:43 +00:00
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#include <algorithm>
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2016-07-25 10:24:45 +00:00
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#include <memory>
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2015-03-19 12:39:43 +00:00
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2016-07-01 05:26:58 +00:00
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#include "src/asmjs/asm-js.h"
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2016-07-14 00:04:27 +00:00
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#include "src/asmjs/asm-typer.h"
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2015-11-26 16:22:34 +00:00
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#include "src/ast/ast-numbering.h"
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#include "src/ast/prettyprinter.h"
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#include "src/ast/scopes.h"
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2014-06-03 08:12:43 +00:00
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#include "src/bootstrapper.h"
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#include "src/codegen.h"
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#include "src/compilation-cache.h"
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2016-08-19 08:19:17 +00:00
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#include "src/compiler-dispatcher/optimizing-compile-dispatcher.h"
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2014-07-30 13:54:45 +00:00
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#include "src/compiler/pipeline.h"
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2015-10-20 13:25:47 +00:00
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#include "src/crankshaft/hydrogen.h"
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2015-07-31 11:07:50 +00:00
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#include "src/debug/debug.h"
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#include "src/debug/liveedit.h"
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2014-06-03 08:12:43 +00:00
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#include "src/deoptimizer.h"
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2016-04-25 10:46:38 +00:00
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#include "src/frames-inl.h"
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2015-07-24 10:11:46 +00:00
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#include "src/full-codegen/full-codegen.h"
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2016-06-30 09:26:30 +00:00
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#include "src/globals.h"
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2016-07-13 17:44:41 +00:00
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#include "src/heap/heap.h"
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2015-08-18 13:46:43 +00:00
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#include "src/interpreter/interpreter.h"
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2015-09-01 09:25:19 +00:00
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#include "src/isolate-inl.h"
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2015-08-11 07:34:10 +00:00
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#include "src/log-inl.h"
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2014-11-28 04:08:48 +00:00
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#include "src/messages.h"
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2015-11-26 16:22:34 +00:00
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#include "src/parsing/parser.h"
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#include "src/parsing/rewriter.h"
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#include "src/parsing/scanner-character-streams.h"
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2014-06-03 08:12:43 +00:00
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#include "src/runtime-profiler.h"
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2016-03-01 14:42:57 +00:00
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#include "src/snapshot/code-serializer.h"
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2014-06-03 08:12:43 +00:00
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#include "src/vm-state-inl.h"
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2008-07-03 15:10:15 +00:00
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2009-05-25 10:05:56 +00:00
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namespace v8 {
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namespace internal {
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2008-07-03 15:10:15 +00:00
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2015-02-17 12:26:05 +00:00
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2015-03-09 14:51:13 +00:00
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2016-03-04 10:44:31 +00:00
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// A wrapper around a CompilationInfo that detaches the Handles from
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// the underlying DeferredHandleScope and stores them in info_ on
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// destruction.
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2016-08-25 11:56:13 +00:00
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class CompilationHandleScope final {
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2016-03-04 10:44:31 +00:00
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public:
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explicit CompilationHandleScope(CompilationInfo* info)
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: deferred_(info->isolate()), info_(info) {}
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~CompilationHandleScope() { info_->set_deferred_handles(deferred_.Detach()); }
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private:
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DeferredHandleScope deferred_;
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CompilationInfo* info_;
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};
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2015-03-09 14:51:13 +00:00
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2016-04-11 10:01:09 +00:00
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// Helper that times a scoped region and records the elapsed time.
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struct ScopedTimer {
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explicit ScopedTimer(base::TimeDelta* location) : location_(location) {
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DCHECK(location_ != NULL);
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timer_.Start();
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}
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~ScopedTimer() { *location_ += timer_.Elapsed(); }
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base::ElapsedTimer timer_;
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base::TimeDelta* location_;
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};
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2016-03-18 13:56:57 +00:00
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// ----------------------------------------------------------------------------
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2016-04-27 17:54:16 +00:00
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// Implementation of CompilationJob
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2015-08-27 20:31:25 +00:00
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2016-08-22 11:48:59 +00:00
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CompilationJob::Status CompilationJob::PrepareJob() {
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DCHECK(ThreadId::Current().Equals(info()->isolate()->thread_id()));
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2016-04-15 13:40:47 +00:00
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DisallowJavascriptExecution no_js(isolate());
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2010-12-07 11:31:57 +00:00
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2016-08-22 11:48:59 +00:00
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if (FLAG_trace_opt && info()->IsOptimizing()) {
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2016-04-11 12:06:41 +00:00
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OFStream os(stdout);
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os << "[compiling method " << Brief(*info()->closure()) << " using "
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<< compiler_name_;
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if (info()->is_osr()) os << " OSR";
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os << "]" << std::endl;
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}
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2016-04-11 10:01:09 +00:00
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// Delegate to the underlying implementation.
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2016-08-22 11:48:59 +00:00
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DCHECK(state() == State::kReadyToPrepare);
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ScopedTimer t(&time_taken_to_prepare_);
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return UpdateState(PrepareJobImpl(), State::kReadyToExecute);
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2012-07-17 16:24:40 +00:00
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}
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2016-08-22 11:48:59 +00:00
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CompilationJob::Status CompilationJob::ExecuteJob() {
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2016-08-25 10:24:53 +00:00
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std::unique_ptr<DisallowHeapAllocation> no_allocation;
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std::unique_ptr<DisallowHandleAllocation> no_handles;
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std::unique_ptr<DisallowHandleDereference> no_deref;
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std::unique_ptr<DisallowCodeDependencyChange> no_dependency_change;
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if (can_execute_on_background_thread()) {
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no_allocation.reset(new DisallowHeapAllocation());
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no_handles.reset(new DisallowHandleAllocation());
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no_deref.reset(new DisallowHandleDereference());
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no_dependency_change.reset(new DisallowCodeDependencyChange());
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} else {
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DCHECK(ThreadId::Current().Equals(info()->isolate()->thread_id()));
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}
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2012-07-19 18:58:23 +00:00
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2016-04-11 10:01:09 +00:00
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// Delegate to the underlying implementation.
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2016-08-22 11:48:59 +00:00
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DCHECK(state() == State::kReadyToExecute);
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ScopedTimer t(&time_taken_to_execute_);
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return UpdateState(ExecuteJobImpl(), State::kReadyToFinalize);
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2016-04-11 10:01:09 +00:00
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}
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2013-12-23 14:30:35 +00:00
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2016-08-22 11:48:59 +00:00
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CompilationJob::Status CompilationJob::FinalizeJob() {
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DCHECK(ThreadId::Current().Equals(info()->isolate()->thread_id()));
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2016-04-11 10:01:09 +00:00
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DisallowCodeDependencyChange no_dependency_change;
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DisallowJavascriptExecution no_js(isolate());
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DCHECK(!info()->dependencies()->HasAborted());
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2013-12-23 14:30:35 +00:00
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2016-04-11 10:01:09 +00:00
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// Delegate to the underlying implementation.
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2016-08-22 11:48:59 +00:00
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DCHECK(state() == State::kReadyToFinalize);
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ScopedTimer t(&time_taken_to_finalize_);
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return UpdateState(FinalizeJobImpl(), State::kSucceeded);
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2012-07-17 16:24:40 +00:00
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}
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2016-08-31 08:49:14 +00:00
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CompilationJob::Status CompilationJob::RetryOptimization(BailoutReason reason) {
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DCHECK(info_->IsOptimizing());
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info_->RetryOptimization(reason);
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state_ = State::kFailed;
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return FAILED;
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}
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CompilationJob::Status CompilationJob::AbortOptimization(BailoutReason reason) {
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DCHECK(info_->IsOptimizing());
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info_->AbortOptimization(reason);
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state_ = State::kFailed;
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return FAILED;
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}
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2016-08-25 10:24:53 +00:00
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void CompilationJob::RecordUnoptimizedCompilationStats() const {
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int code_size;
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if (info()->has_bytecode_array()) {
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code_size = info()->bytecode_array()->SizeIncludingMetadata();
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} else {
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code_size = info()->code()->SizeIncludingMetadata();
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}
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Counters* counters = isolate()->counters();
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// TODO(4280): Rename counters from "baseline" to "unoptimized" eventually.
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counters->total_baseline_code_size()->Increment(code_size);
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counters->total_baseline_compile_count()->Increment(1);
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// TODO(5203): Add timers for each phase of compilation.
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}
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void CompilationJob::RecordOptimizedCompilationStats() const {
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DCHECK(info()->IsOptimizing());
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Handle<JSFunction> function = info()->closure();
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if (!function->IsOptimized()) {
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// Concurrent recompilation and OSR may race. Increment only once.
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int opt_count = function->shared()->opt_count();
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function->shared()->set_opt_count(opt_count + 1);
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}
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double ms_creategraph = time_taken_to_prepare_.InMillisecondsF();
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double ms_optimize = time_taken_to_execute_.InMillisecondsF();
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double ms_codegen = time_taken_to_finalize_.InMillisecondsF();
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if (FLAG_trace_opt) {
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PrintF("[optimizing ");
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function->ShortPrint();
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PrintF(" - took %0.3f, %0.3f, %0.3f ms]\n", ms_creategraph, ms_optimize,
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ms_codegen);
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}
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if (FLAG_trace_opt_stats) {
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static double compilation_time = 0.0;
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static int compiled_functions = 0;
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static int code_size = 0;
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compilation_time += (ms_creategraph + ms_optimize + ms_codegen);
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compiled_functions++;
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code_size += function->shared()->SourceSize();
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PrintF("Compiled: %d functions with %d byte source size in %fms.\n",
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compiled_functions, code_size, compilation_time);
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}
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if (FLAG_hydrogen_stats) {
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isolate()->GetHStatistics()->IncrementSubtotals(time_taken_to_prepare_,
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time_taken_to_execute_,
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time_taken_to_finalize_);
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}
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}
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2016-08-31 08:49:14 +00:00
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Isolate* CompilationJob::isolate() const { return info()->isolate(); }
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2016-01-04 07:11:45 +00:00
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namespace {
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void AddWeakObjectToCodeDependency(Isolate* isolate, Handle<HeapObject> object,
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Handle<Code> code) {
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Handle<WeakCell> cell = Code::WeakCellFor(code);
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Heap* heap = isolate->heap();
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2016-06-28 12:34:24 +00:00
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if (heap->InNewSpace(*object)) {
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heap->AddWeakNewSpaceObjectToCodeDependency(object, cell);
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} else {
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Handle<DependentCode> dep(heap->LookupWeakObjectToCodeDependency(object));
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dep =
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DependentCode::InsertWeakCode(dep, DependentCode::kWeakCodeGroup, cell);
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heap->AddWeakObjectToCodeDependency(object, dep);
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}
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2016-01-04 07:11:45 +00:00
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}
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2016-04-11 10:01:09 +00:00
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} // namespace
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2016-01-04 07:11:45 +00:00
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2016-04-27 17:54:16 +00:00
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void CompilationJob::RegisterWeakObjectsInOptimizedCode(Handle<Code> code) {
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2016-01-04 07:11:45 +00:00
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// TODO(turbofan): Move this to pipeline.cc once Crankshaft dies.
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Isolate* const isolate = code->GetIsolate();
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DCHECK(code->is_optimized_code());
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std::vector<Handle<Map>> maps;
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std::vector<Handle<HeapObject>> objects;
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{
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DisallowHeapAllocation no_gc;
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int const mode_mask = RelocInfo::ModeMask(RelocInfo::EMBEDDED_OBJECT) |
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RelocInfo::ModeMask(RelocInfo::CELL);
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for (RelocIterator it(*code, mode_mask); !it.done(); it.next()) {
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RelocInfo::Mode mode = it.rinfo()->rmode();
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if (mode == RelocInfo::CELL &&
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code->IsWeakObjectInOptimizedCode(it.rinfo()->target_cell())) {
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objects.push_back(handle(it.rinfo()->target_cell(), isolate));
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} else if (mode == RelocInfo::EMBEDDED_OBJECT &&
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code->IsWeakObjectInOptimizedCode(
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it.rinfo()->target_object())) {
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Handle<HeapObject> object(HeapObject::cast(it.rinfo()->target_object()),
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isolate);
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if (object->IsMap()) {
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maps.push_back(Handle<Map>::cast(object));
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} else {
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objects.push_back(object);
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}
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}
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}
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}
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for (Handle<Map> map : maps) {
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if (map->dependent_code()->IsEmpty(DependentCode::kWeakCodeGroup)) {
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isolate->heap()->AddRetainedMap(map);
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}
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Map::AddDependentCode(map, DependentCode::kWeakCodeGroup, code);
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}
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for (Handle<HeapObject> object : objects) {
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AddWeakObjectToCodeDependency(isolate, object, code);
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}
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code->set_can_have_weak_objects(true);
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}
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2016-03-18 13:56:57 +00:00
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// ----------------------------------------------------------------------------
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// Local helper methods that make up the compilation pipeline.
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namespace {
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2013-01-15 10:16:52 +00:00
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2016-05-04 10:56:53 +00:00
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bool IsEvalToplevel(Handle<SharedFunctionInfo> shared) {
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return shared->is_toplevel() && shared->script()->IsScript() &&
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Script::cast(shared->script())->compilation_type() ==
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Script::COMPILATION_TYPE_EVAL;
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}
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2016-09-15 10:26:19 +00:00
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bool Parse(ParseInfo* info) {
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// Create a canonical handle scope if compiling ignition bytecode. This is
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// required by the constant array builder to de-duplicate objects without
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// dereferencing handles.
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std::unique_ptr<CanonicalHandleScope> canonical;
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if (FLAG_ignition) canonical.reset(new CanonicalHandleScope(info->isolate()));
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return Parser::ParseStatic(info);
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}
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2016-06-15 13:22:39 +00:00
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void RecordFunctionCompilation(CodeEventListener::LogEventsAndTags tag,
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2016-04-20 11:05:53 +00:00
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CompilationInfo* info) {
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2014-09-18 09:41:45 +00:00
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// Log the code generation. If source information is available include
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// script name and line number. Check explicitly whether logging is
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// enabled as finding the line number is not free.
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if (info->isolate()->logger()->is_logging_code_events() ||
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2016-06-09 05:23:34 +00:00
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info->isolate()->is_profiling()) {
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2016-04-20 11:05:53 +00:00
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Handle<SharedFunctionInfo> shared = info->shared_info();
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2015-03-09 14:51:13 +00:00
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Handle<Script> script = info->parse_info()->script();
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2016-04-20 11:05:53 +00:00
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Handle<AbstractCode> abstract_code =
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info->has_bytecode_array()
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? Handle<AbstractCode>::cast(info->bytecode_array())
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: Handle<AbstractCode>::cast(info->code());
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2016-02-26 11:04:04 +00:00
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if (abstract_code.is_identical_to(
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info->isolate()->builtins()->CompileLazy())) {
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2014-09-18 09:41:45 +00:00
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return;
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}
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int line_num = Script::GetLineNumber(script, shared->start_position()) + 1;
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int column_num =
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Script::GetColumnNumber(script, shared->start_position()) + 1;
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String* script_name = script->name()->IsString()
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? String::cast(script->name())
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: info->isolate()->heap()->empty_string();
|
2016-06-15 13:22:39 +00:00
|
|
|
CodeEventListener::LogEventsAndTags log_tag =
|
|
|
|
Logger::ToNativeByScript(tag, *script);
|
2014-09-18 09:41:45 +00:00
|
|
|
PROFILE(info->isolate(),
|
2016-05-13 09:44:52 +00:00
|
|
|
CodeCreateEvent(log_tag, *abstract_code, *shared, script_name,
|
2014-09-18 09:41:45 +00:00
|
|
|
line_num, column_num));
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2016-05-27 08:09:12 +00:00
|
|
|
void EnsureFeedbackMetadata(CompilationInfo* info) {
|
2016-04-19 09:32:29 +00:00
|
|
|
DCHECK(info->has_shared_info());
|
2016-04-05 14:29:56 +00:00
|
|
|
|
2016-05-27 08:09:12 +00:00
|
|
|
// If no type feedback metadata exists, we create it now. At this point the
|
2016-04-11 18:56:25 +00:00
|
|
|
// AstNumbering pass has already run. Note the snapshot can contain outdated
|
|
|
|
// vectors for a different configuration, hence we also recreate a new vector
|
|
|
|
// when the function is not compiled (i.e. no code was serialized).
|
2016-05-27 08:09:12 +00:00
|
|
|
|
|
|
|
// TODO(mvstanton): reintroduce is_empty() predicate to feedback_metadata().
|
|
|
|
if (info->shared_info()->feedback_metadata()->length() == 0 ||
|
2016-04-11 18:56:25 +00:00
|
|
|
!info->shared_info()->is_compiled()) {
|
2016-04-05 14:29:56 +00:00
|
|
|
Handle<TypeFeedbackMetadata> feedback_metadata = TypeFeedbackMetadata::New(
|
|
|
|
info->isolate(), info->literal()->feedback_vector_spec());
|
2016-05-27 08:09:12 +00:00
|
|
|
info->shared_info()->set_feedback_metadata(*feedback_metadata);
|
2016-04-05 14:29:56 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
// It's very important that recompiles do not alter the structure of the type
|
|
|
|
// feedback vector. Verify that the structure fits the function literal.
|
2016-05-27 08:09:12 +00:00
|
|
|
CHECK(!info->shared_info()->feedback_metadata()->SpecDiffersFrom(
|
2016-04-05 14:29:56 +00:00
|
|
|
info->literal()->feedback_vector_spec()));
|
|
|
|
}
|
|
|
|
|
2016-07-25 09:42:48 +00:00
|
|
|
bool ShouldUseIgnition(CompilationInfo* info) {
|
2016-07-26 14:46:23 +00:00
|
|
|
if (!FLAG_ignition) return false;
|
|
|
|
|
2016-06-08 07:07:20 +00:00
|
|
|
DCHECK(info->has_shared_info());
|
|
|
|
|
|
|
|
// When requesting debug code as a replacement for existing code, we provide
|
|
|
|
// the same kind as the existing code (to prevent implicit tier-change).
|
|
|
|
if (info->is_debug() && info->shared_info()->is_compiled()) {
|
2016-08-12 11:05:43 +00:00
|
|
|
return !info->shared_info()->HasBaselineCode();
|
2016-06-08 07:07:20 +00:00
|
|
|
}
|
|
|
|
|
2016-05-24 16:30:37 +00:00
|
|
|
// Since we can't OSR from Ignition, skip Ignition for asm.js functions.
|
|
|
|
if (info->shared_info()->asm_function()) {
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
2015-12-14 20:57:38 +00:00
|
|
|
// Checks whether top level functions should be passed by the filter.
|
2016-04-05 14:07:15 +00:00
|
|
|
if (info->shared_info()->is_toplevel()) {
|
2015-12-14 20:57:38 +00:00
|
|
|
Vector<const char> filter = CStrVector(FLAG_ignition_filter);
|
|
|
|
return (filter.length() == 0) || (filter.length() == 1 && filter[0] == '*');
|
|
|
|
}
|
|
|
|
|
|
|
|
// Finally respect the filter.
|
2016-04-05 14:07:15 +00:00
|
|
|
return info->shared_info()->PassesFilter(FLAG_ignition_filter);
|
2015-12-14 20:57:38 +00:00
|
|
|
}
|
|
|
|
|
2016-08-25 10:24:53 +00:00
|
|
|
CompilationJob* GetUnoptimizedCompilationJob(CompilationInfo* info) {
|
|
|
|
// Function should have been parsed and analyzed before creating a compilation
|
|
|
|
// job.
|
|
|
|
DCHECK_NOT_NULL(info->literal());
|
|
|
|
DCHECK_NOT_NULL(info->scope());
|
|
|
|
|
|
|
|
EnsureFeedbackMetadata(info);
|
|
|
|
if (ShouldUseIgnition(info)) {
|
|
|
|
return interpreter::Interpreter::NewCompilationJob(info);
|
|
|
|
} else {
|
|
|
|
return FullCodeGenerator::NewCompilationJob(info);
|
2016-02-02 16:47:58 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2016-04-20 14:11:53 +00:00
|
|
|
bool GenerateUnoptimizedCode(CompilationInfo* info) {
|
2016-08-17 17:22:09 +00:00
|
|
|
if (FLAG_validate_asm && info->scope()->asm_module() &&
|
|
|
|
!info->shared_info()->is_asm_wasm_broken()) {
|
2016-08-25 10:24:53 +00:00
|
|
|
EnsureFeedbackMetadata(info);
|
2016-07-01 05:26:58 +00:00
|
|
|
MaybeHandle<FixedArray> wasm_data;
|
|
|
|
wasm_data = AsmJs::ConvertAsmToWasm(info->parse_info());
|
|
|
|
if (!wasm_data.is_null()) {
|
|
|
|
info->shared_info()->set_asm_wasm_data(*wasm_data.ToHandleChecked());
|
|
|
|
info->SetCode(info->isolate()->builtins()->InstantiateAsmJs());
|
|
|
|
return true;
|
2016-05-12 16:35:50 +00:00
|
|
|
}
|
|
|
|
}
|
2016-08-25 10:24:53 +00:00
|
|
|
|
|
|
|
std::unique_ptr<CompilationJob> job(GetUnoptimizedCompilationJob(info));
|
|
|
|
if (job->PrepareJob() != CompilationJob::SUCCEEDED) return false;
|
|
|
|
if (job->ExecuteJob() != CompilationJob::SUCCEEDED) return false;
|
|
|
|
if (job->FinalizeJob() != CompilationJob::SUCCEEDED) return false;
|
|
|
|
job->RecordUnoptimizedCompilationStats();
|
|
|
|
return true;
|
2015-12-14 20:57:38 +00:00
|
|
|
}
|
|
|
|
|
2016-04-20 14:11:53 +00:00
|
|
|
bool CompileUnoptimizedCode(CompilationInfo* info) {
|
2015-12-14 20:57:38 +00:00
|
|
|
DCHECK(AllowCompilation::IsAllowed(info->isolate()));
|
2016-04-20 14:11:53 +00:00
|
|
|
if (!Compiler::Analyze(info->parse_info()) ||
|
|
|
|
!GenerateUnoptimizedCode(info)) {
|
2015-08-18 13:46:43 +00:00
|
|
|
Isolate* isolate = info->isolate();
|
|
|
|
if (!isolate->has_pending_exception()) isolate->StackOverflow();
|
2015-12-14 20:57:38 +00:00
|
|
|
return false;
|
2015-08-18 13:46:43 +00:00
|
|
|
}
|
2015-12-14 20:57:38 +00:00
|
|
|
return true;
|
2015-08-18 13:46:43 +00:00
|
|
|
}
|
|
|
|
|
2016-04-20 08:50:24 +00:00
|
|
|
void InstallSharedScopeInfo(CompilationInfo* info,
|
|
|
|
Handle<SharedFunctionInfo> shared) {
|
2016-08-30 09:48:27 +00:00
|
|
|
Handle<ScopeInfo> scope_info = info->scope()->scope_info();
|
2016-04-20 08:50:24 +00:00
|
|
|
shared->set_scope_info(*scope_info);
|
|
|
|
}
|
|
|
|
|
|
|
|
void InstallSharedCompilationResult(CompilationInfo* info,
|
|
|
|
Handle<SharedFunctionInfo> shared) {
|
2016-06-08 07:07:20 +00:00
|
|
|
// TODO(mstarzinger): Compiling for debug code might be used to reveal inner
|
|
|
|
// functions via {FindSharedFunctionInfoInScript}, in which case we end up
|
|
|
|
// regenerating existing bytecode. Fix this!
|
|
|
|
if (info->is_debug() && info->has_bytecode_array()) {
|
|
|
|
shared->ClearBytecodeArray();
|
|
|
|
}
|
2016-03-18 10:46:40 +00:00
|
|
|
DCHECK(!info->code().is_null());
|
|
|
|
shared->ReplaceCode(*info->code());
|
|
|
|
if (info->has_bytecode_array()) {
|
|
|
|
DCHECK(!shared->HasBytecodeArray()); // Only compiled once.
|
|
|
|
shared->set_bytecode_array(*info->bytecode_array());
|
|
|
|
}
|
|
|
|
}
|
2015-08-18 13:46:43 +00:00
|
|
|
|
2016-08-25 10:24:53 +00:00
|
|
|
void InstallUnoptimizedCode(CompilationInfo* info) {
|
|
|
|
Handle<SharedFunctionInfo> shared = info->shared_info();
|
|
|
|
|
|
|
|
// Update the shared function info with the scope info.
|
|
|
|
InstallSharedScopeInfo(info, shared);
|
|
|
|
|
|
|
|
// Install compilation result on the shared function info
|
|
|
|
InstallSharedCompilationResult(info, shared);
|
|
|
|
|
|
|
|
// Record the function compilation event.
|
|
|
|
RecordFunctionCompilation(CodeEventListener::LAZY_COMPILE_TAG, info);
|
|
|
|
}
|
|
|
|
|
2016-04-06 19:20:10 +00:00
|
|
|
MUST_USE_RESULT MaybeHandle<Code> GetUnoptimizedCode(CompilationInfo* info) {
|
2013-12-23 14:30:35 +00:00
|
|
|
VMState<COMPILER> state(info->isolate());
|
|
|
|
PostponeInterruptsScope postpone(info->isolate());
|
2014-09-17 12:34:46 +00:00
|
|
|
|
|
|
|
// Parse and update CompilationInfo with the results.
|
2016-09-15 10:26:19 +00:00
|
|
|
if (!Parse(info->parse_info())) return MaybeHandle<Code>();
|
2016-08-25 10:24:53 +00:00
|
|
|
DCHECK_EQ(info->shared_info()->language_mode(),
|
|
|
|
info->literal()->language_mode());
|
2013-10-28 17:54:43 +00:00
|
|
|
|
2015-12-14 20:57:38 +00:00
|
|
|
// Compile either unoptimized code or bytecode for the interpreter.
|
2016-04-20 14:11:53 +00:00
|
|
|
if (!CompileUnoptimizedCode(info)) return MaybeHandle<Code>();
|
2014-09-17 12:34:46 +00:00
|
|
|
|
2016-08-25 10:24:53 +00:00
|
|
|
InstallUnoptimizedCode(info);
|
2016-04-25 10:46:38 +00:00
|
|
|
|
2013-12-23 14:30:35 +00:00
|
|
|
return info->code();
|
|
|
|
}
|
2013-10-28 17:54:43 +00:00
|
|
|
|
2016-08-25 10:24:53 +00:00
|
|
|
CompilationJob::Status FinalizeUnoptimizedCompilationJob(CompilationJob* job) {
|
|
|
|
CompilationJob::Status status = job->FinalizeJob();
|
|
|
|
if (status == CompilationJob::SUCCEEDED) {
|
|
|
|
DCHECK(!job->info()->shared_info()->is_compiled());
|
|
|
|
InstallUnoptimizedCode(job->info());
|
|
|
|
job->RecordUnoptimizedCompilationStats();
|
|
|
|
}
|
|
|
|
return status;
|
|
|
|
}
|
|
|
|
|
2016-03-18 13:56:57 +00:00
|
|
|
MUST_USE_RESULT MaybeHandle<Code> GetCodeFromOptimizedCodeMap(
|
2014-09-22 12:32:47 +00:00
|
|
|
Handle<JSFunction> function, BailoutId osr_ast_id) {
|
2015-06-25 09:44:58 +00:00
|
|
|
Handle<SharedFunctionInfo> shared(function->shared());
|
|
|
|
DisallowHeapAllocation no_gc;
|
|
|
|
CodeAndLiterals cached = shared->SearchOptimizedCodeMap(
|
|
|
|
function->context()->native_context(), osr_ast_id);
|
|
|
|
if (cached.code != nullptr) {
|
|
|
|
// Caching of optimized code enabled and optimized code found.
|
|
|
|
if (cached.literals != nullptr) function->set_literals(cached.literals);
|
|
|
|
DCHECK(!cached.code->marked_for_deoptimization());
|
|
|
|
DCHECK(function->shared()->is_compiled());
|
|
|
|
return Handle<Code>(cached.code);
|
2014-09-22 12:32:47 +00:00
|
|
|
}
|
|
|
|
return MaybeHandle<Code>();
|
|
|
|
}
|
|
|
|
|
2016-03-18 13:56:57 +00:00
|
|
|
void InsertCodeIntoOptimizedCodeMap(CompilationInfo* info) {
|
2014-09-22 12:32:47 +00:00
|
|
|
Handle<Code> code = info->code();
|
|
|
|
if (code->kind() != Code::OPTIMIZED_FUNCTION) return; // Nothing to do.
|
|
|
|
|
2015-10-07 12:10:49 +00:00
|
|
|
// Function context specialization folds-in the function context,
|
|
|
|
// so no sharing can occur.
|
2015-09-25 11:33:28 +00:00
|
|
|
if (info->is_function_context_specializing()) return;
|
|
|
|
// Frame specialization implies function context specialization.
|
2015-07-06 11:11:15 +00:00
|
|
|
DCHECK(!info->is_frame_specializing());
|
2014-09-22 12:32:47 +00:00
|
|
|
|
2016-07-27 08:19:43 +00:00
|
|
|
// TODO(4764): When compiling for OSR from bytecode, BailoutId might derive
|
|
|
|
// from bytecode offset and overlap with actual BailoutId. No caching!
|
|
|
|
if (info->is_osr() && info->is_optimizing_from_bytecode()) return;
|
|
|
|
|
Revert of [runtime] Introduce dedicated JSBoundFunction to represent bound functions. (patchset #14 id:260001 of https://codereview.chromium.org/1542963002/ )
Reason for revert:
Breaks arm64 sim nosnap: https://build.chromium.org/p/client.v8/builders/V8%20Linux%20-%20arm64%20-%20sim%20-%20nosnap%20-%20debug/builds/805/steps/Check/logs/function-bind
Original issue's description:
> [runtime] Introduce dedicated JSBoundFunction to represent bound functions.
>
> According to the ES2015 specification, bound functions are exotic
> objects, and thus don't need to be implemented as JSFunctions. So
> we introduce a new JSBoundFunction type to represent bound functions
> and make them optimizable. This already improves the performance of
> calling or constructing bound functions by 10-100x depending on the
> use case because we avoid the crazy dance between JavaScript and C++
> that was implemented in v8natives.js previously.
>
> There's still room for improvement in the performance of actually
> creating bound functions, which is also relevant in practice, but
> we already have a plan how to accomplish that later.
>
> The mips/mips64 ports were contributed by akos.palfi@imgtec.com.
>
> CQ_INCLUDE_TRYBOTS=tryserver.chromium.linux:linux_chromium_rel_ng;tryserver.blink:linux_blink_rel
> BUG=chromium:535408, chromium:571299, v8:4629
> LOG=n
>
> Committed: https://crrev.com/ca8623eaa468cba65a5adafcdfb4615966f43ce2
> Cr-Commit-Position: refs/heads/master@{#33042}
TBR=cbruni@chromium.org,hpayer@chromium.org,yangguo@chromium.org,akos.palfi@imgtec.com
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=chromium:535408, chromium:571299, v8:4629
Review URL: https://codereview.chromium.org/1552473002
Cr-Commit-Position: refs/heads/master@{#33043}
2015-12-27 04:41:46 +00:00
|
|
|
// Cache optimized context-specific code.
|
2015-12-27 06:30:53 +00:00
|
|
|
Handle<JSFunction> function = info->closure();
|
2015-10-12 16:10:41 +00:00
|
|
|
Handle<SharedFunctionInfo> shared(function->shared());
|
|
|
|
Handle<LiteralsArray> literals(function->literals());
|
|
|
|
Handle<Context> native_context(function->context()->native_context());
|
|
|
|
SharedFunctionInfo::AddToOptimizedCodeMap(shared, native_context, code,
|
|
|
|
literals, info->osr_ast_id());
|
2015-06-26 09:07:30 +00:00
|
|
|
|
2015-10-07 12:10:49 +00:00
|
|
|
// Do not cache (native) context-independent code compiled for OSR.
|
2015-06-26 09:07:30 +00:00
|
|
|
if (code->is_turbofanned() && info->is_osr()) return;
|
|
|
|
|
2015-10-07 12:10:49 +00:00
|
|
|
// Cache optimized (native) context-independent code.
|
|
|
|
if (FLAG_turbo_cache_shared_code && code->is_turbofanned() &&
|
|
|
|
!info->is_native_context_specializing()) {
|
2015-09-25 11:33:28 +00:00
|
|
|
DCHECK(!info->is_function_context_specializing());
|
2015-06-26 09:07:30 +00:00
|
|
|
DCHECK(info->osr_ast_id().IsNone());
|
|
|
|
Handle<SharedFunctionInfo> shared(function->shared());
|
|
|
|
SharedFunctionInfo::AddSharedCodeToOptimizedCodeMap(shared, code);
|
|
|
|
}
|
2014-09-22 12:32:47 +00:00
|
|
|
}
|
|
|
|
|
2016-03-18 13:56:57 +00:00
|
|
|
bool Renumber(ParseInfo* parse_info) {
|
2016-09-15 10:26:19 +00:00
|
|
|
// Create a canonical handle scope if compiling ignition bytecode. This is
|
|
|
|
// required by the constant array builder to de-duplicate objects without
|
|
|
|
// dereferencing handles.
|
|
|
|
std::unique_ptr<CanonicalHandleScope> canonical;
|
|
|
|
if (FLAG_ignition) {
|
|
|
|
canonical.reset(new CanonicalHandleScope(parse_info->isolate()));
|
|
|
|
}
|
|
|
|
|
2015-03-09 14:51:13 +00:00
|
|
|
if (!AstNumbering::Renumber(parse_info->isolate(), parse_info->zone(),
|
2015-08-19 16:51:37 +00:00
|
|
|
parse_info->literal())) {
|
2015-01-23 15:19:34 +00:00
|
|
|
return false;
|
|
|
|
}
|
2015-03-09 14:51:13 +00:00
|
|
|
Handle<SharedFunctionInfo> shared_info = parse_info->shared_info();
|
|
|
|
if (!shared_info.is_null()) {
|
2015-08-19 16:51:37 +00:00
|
|
|
FunctionLiteral* lit = parse_info->literal();
|
2015-03-09 14:51:13 +00:00
|
|
|
shared_info->set_ast_node_count(lit->ast_node_count());
|
2016-04-14 12:31:03 +00:00
|
|
|
if (lit->dont_optimize_reason() != kNoReason) {
|
|
|
|
shared_info->DisableOptimization(lit->dont_optimize_reason());
|
|
|
|
}
|
2016-07-14 13:05:15 +00:00
|
|
|
if (lit->flags() & AstProperties::kDontCrankshaft) {
|
|
|
|
shared_info->set_dont_crankshaft(true);
|
|
|
|
}
|
2014-10-28 13:23:54 +00:00
|
|
|
}
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
2016-05-09 09:10:19 +00:00
|
|
|
bool UseTurboFan(Handle<SharedFunctionInfo> shared) {
|
2016-05-02 14:44:29 +00:00
|
|
|
bool optimization_disabled = shared->optimization_disabled();
|
|
|
|
bool dont_crankshaft = shared->dont_crankshaft();
|
2016-04-11 10:01:09 +00:00
|
|
|
|
|
|
|
// Check the enabling conditions for Turbofan.
|
|
|
|
// 1. "use asm" code.
|
2016-05-02 14:44:29 +00:00
|
|
|
bool is_turbofanable_asm =
|
|
|
|
FLAG_turbo_asm && shared->asm_function() && !optimization_disabled;
|
2016-04-11 10:01:09 +00:00
|
|
|
|
|
|
|
// 2. Fallback for features unsupported by Crankshaft.
|
|
|
|
bool is_unsupported_by_crankshaft_but_turbofanable =
|
|
|
|
dont_crankshaft && strcmp(FLAG_turbo_filter, "~~") == 0 &&
|
|
|
|
!optimization_disabled;
|
|
|
|
|
|
|
|
// 3. Explicitly enabled by the command-line filter.
|
2016-05-02 14:44:29 +00:00
|
|
|
bool passes_turbo_filter = shared->PassesFilter(FLAG_turbo_filter);
|
2016-04-11 10:01:09 +00:00
|
|
|
|
2016-05-09 09:10:19 +00:00
|
|
|
return is_turbofanable_asm || is_unsupported_by_crankshaft_but_turbofanable ||
|
|
|
|
passes_turbo_filter;
|
2016-04-11 10:01:09 +00:00
|
|
|
}
|
|
|
|
|
2016-04-27 17:54:16 +00:00
|
|
|
bool GetOptimizedCodeNow(CompilationJob* job) {
|
2016-04-27 17:45:26 +00:00
|
|
|
CompilationInfo* info = job->info();
|
2015-10-26 15:33:02 +00:00
|
|
|
Isolate* isolate = info->isolate();
|
2016-04-18 09:09:59 +00:00
|
|
|
|
|
|
|
// Parsing is not required when optimizing from existing bytecode.
|
2016-04-27 17:45:26 +00:00
|
|
|
if (!info->is_optimizing_from_bytecode()) {
|
2016-04-18 09:09:59 +00:00
|
|
|
if (!Compiler::ParseAndAnalyze(info->parse_info())) return false;
|
2016-05-27 08:09:12 +00:00
|
|
|
EnsureFeedbackMetadata(info);
|
2016-04-18 09:09:59 +00:00
|
|
|
}
|
2014-09-22 12:32:47 +00:00
|
|
|
|
2016-05-27 08:09:12 +00:00
|
|
|
JSFunction::EnsureLiterals(info->closure());
|
|
|
|
|
2015-10-26 15:33:02 +00:00
|
|
|
TimerEventScope<TimerEventRecompileSynchronous> timer(isolate);
|
2016-06-17 12:03:58 +00:00
|
|
|
RuntimeCallTimerScope runtimeTimer(isolate,
|
|
|
|
&RuntimeCallStats::RecompileSynchronous);
|
2016-09-01 20:07:34 +00:00
|
|
|
TRACE_EVENT0(TRACE_DISABLED_BY_DEFAULT("v8.compile"),
|
|
|
|
"V8.RecompileSynchronous");
|
2014-09-22 12:32:47 +00:00
|
|
|
|
2016-08-22 11:48:59 +00:00
|
|
|
if (job->PrepareJob() != CompilationJob::SUCCEEDED ||
|
|
|
|
job->ExecuteJob() != CompilationJob::SUCCEEDED ||
|
|
|
|
job->FinalizeJob() != CompilationJob::SUCCEEDED) {
|
2014-09-24 07:08:27 +00:00
|
|
|
if (FLAG_trace_opt) {
|
|
|
|
PrintF("[aborted optimizing ");
|
|
|
|
info->closure()->ShortPrint();
|
|
|
|
PrintF(" because: %s]\n", GetBailoutReason(info->bailout_reason()));
|
|
|
|
}
|
|
|
|
return false;
|
|
|
|
}
|
2014-09-22 12:32:47 +00:00
|
|
|
|
|
|
|
// Success!
|
2016-08-25 10:24:53 +00:00
|
|
|
job->RecordOptimizedCompilationStats();
|
2015-10-26 15:33:02 +00:00
|
|
|
DCHECK(!isolate->has_pending_exception());
|
2014-09-22 12:32:47 +00:00
|
|
|
InsertCodeIntoOptimizedCodeMap(info);
|
2016-06-15 13:22:39 +00:00
|
|
|
RecordFunctionCompilation(CodeEventListener::LAZY_COMPILE_TAG, info);
|
2014-09-22 12:32:47 +00:00
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
2016-04-27 17:54:16 +00:00
|
|
|
bool GetOptimizedCodeLater(CompilationJob* job) {
|
2016-04-27 17:45:26 +00:00
|
|
|
CompilationInfo* info = job->info();
|
2014-09-22 12:32:47 +00:00
|
|
|
Isolate* isolate = info->isolate();
|
2015-10-26 15:33:02 +00:00
|
|
|
|
2015-04-14 13:57:35 +00:00
|
|
|
if (!isolate->optimizing_compile_dispatcher()->IsQueueAvailable()) {
|
2014-09-22 12:32:47 +00:00
|
|
|
if (FLAG_trace_concurrent_recompilation) {
|
|
|
|
PrintF(" ** Compilation queue full, will retry optimizing ");
|
2014-09-24 07:08:27 +00:00
|
|
|
info->closure()->ShortPrint();
|
2014-09-22 12:32:47 +00:00
|
|
|
PrintF(" later.\n");
|
|
|
|
}
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
2016-07-13 17:44:41 +00:00
|
|
|
if (isolate->heap()->HighMemoryPressure()) {
|
|
|
|
if (FLAG_trace_concurrent_recompilation) {
|
|
|
|
PrintF(" ** High memory pressure, will retry optimizing ");
|
|
|
|
info->closure()->ShortPrint();
|
|
|
|
PrintF(" later.\n");
|
|
|
|
}
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
2016-04-18 09:09:59 +00:00
|
|
|
// Parsing is not required when optimizing from existing bytecode.
|
2016-04-27 17:45:26 +00:00
|
|
|
if (!info->is_optimizing_from_bytecode()) {
|
2016-04-18 09:09:59 +00:00
|
|
|
if (!Compiler::ParseAndAnalyze(info->parse_info())) return false;
|
2016-05-27 08:09:12 +00:00
|
|
|
EnsureFeedbackMetadata(info);
|
2016-04-18 09:09:59 +00:00
|
|
|
}
|
2015-03-09 14:51:13 +00:00
|
|
|
|
2016-05-27 08:09:12 +00:00
|
|
|
JSFunction::EnsureLiterals(info->closure());
|
|
|
|
|
2014-09-22 12:32:47 +00:00
|
|
|
TimerEventScope<TimerEventRecompileSynchronous> timer(info->isolate());
|
2016-06-17 12:03:58 +00:00
|
|
|
RuntimeCallTimerScope runtimeTimer(info->isolate(),
|
|
|
|
&RuntimeCallStats::RecompileSynchronous);
|
2016-09-01 20:07:34 +00:00
|
|
|
TRACE_EVENT0(TRACE_DISABLED_BY_DEFAULT("v8.compile"),
|
|
|
|
"V8.RecompileSynchronous");
|
2014-09-22 12:32:47 +00:00
|
|
|
|
2016-08-22 11:48:59 +00:00
|
|
|
if (job->PrepareJob() != CompilationJob::SUCCEEDED) return false;
|
2016-04-27 17:45:26 +00:00
|
|
|
isolate->optimizing_compile_dispatcher()->QueueForOptimization(job);
|
2014-09-22 12:32:47 +00:00
|
|
|
|
|
|
|
if (FLAG_trace_concurrent_recompilation) {
|
|
|
|
PrintF(" ** Queued ");
|
2014-09-24 07:08:27 +00:00
|
|
|
info->closure()->ShortPrint();
|
2016-04-20 08:49:15 +00:00
|
|
|
PrintF(" for concurrent optimization.\n");
|
2014-09-22 12:32:47 +00:00
|
|
|
}
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
2016-03-04 16:10:55 +00:00
|
|
|
MaybeHandle<Code> GetOptimizedCode(Handle<JSFunction> function,
|
|
|
|
Compiler::ConcurrencyMode mode,
|
|
|
|
BailoutId osr_ast_id = BailoutId::None(),
|
|
|
|
JavaScriptFrame* osr_frame = nullptr) {
|
|
|
|
Isolate* isolate = function->GetIsolate();
|
|
|
|
Handle<SharedFunctionInfo> shared(function->shared(), isolate);
|
|
|
|
|
2016-07-27 08:19:43 +00:00
|
|
|
bool ignition_osr = osr_frame && osr_frame->is_interpreted();
|
|
|
|
DCHECK_IMPLIES(ignition_osr, !osr_ast_id.IsNone());
|
|
|
|
DCHECK_IMPLIES(ignition_osr, FLAG_ignition_osr);
|
|
|
|
|
|
|
|
// Flag combination --ignition-osr --no-turbo-from-bytecode is unsupported.
|
|
|
|
if (ignition_osr && !FLAG_turbo_from_bytecode) return MaybeHandle<Code>();
|
2016-07-26 14:31:10 +00:00
|
|
|
|
2016-03-04 16:10:55 +00:00
|
|
|
Handle<Code> cached_code;
|
2016-07-27 08:19:43 +00:00
|
|
|
// TODO(4764): When compiling for OSR from bytecode, BailoutId might derive
|
|
|
|
// from bytecode offset and overlap with actual BailoutId. No lookup!
|
|
|
|
if (!ignition_osr &&
|
|
|
|
GetCodeFromOptimizedCodeMap(function, osr_ast_id)
|
2016-03-04 16:10:55 +00:00
|
|
|
.ToHandle(&cached_code)) {
|
|
|
|
if (FLAG_trace_opt) {
|
|
|
|
PrintF("[found optimized code for ");
|
|
|
|
function->ShortPrint();
|
|
|
|
if (!osr_ast_id.IsNone()) {
|
|
|
|
PrintF(" at OSR AST id %d", osr_ast_id.ToInt());
|
|
|
|
}
|
|
|
|
PrintF("]\n");
|
|
|
|
}
|
|
|
|
return cached_code;
|
|
|
|
}
|
|
|
|
|
2016-04-25 10:46:38 +00:00
|
|
|
// Reset profiler ticks, function is no longer considered hot.
|
2016-03-18 12:08:27 +00:00
|
|
|
if (shared->is_compiled()) {
|
|
|
|
shared->code()->set_profiler_ticks(0);
|
2016-03-04 16:10:55 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
VMState<COMPILER> state(isolate);
|
|
|
|
DCHECK(!isolate->has_pending_exception());
|
|
|
|
PostponeInterruptsScope postpone(isolate);
|
2016-07-27 08:19:43 +00:00
|
|
|
bool use_turbofan = UseTurboFan(shared) || ignition_osr;
|
2016-07-25 11:12:42 +00:00
|
|
|
std::unique_ptr<CompilationJob> job(
|
2016-05-02 14:44:29 +00:00
|
|
|
use_turbofan ? compiler::Pipeline::NewCompilationJob(function)
|
|
|
|
: new HCompilationJob(function));
|
|
|
|
CompilationInfo* info = job->info();
|
2016-05-04 10:56:53 +00:00
|
|
|
ParseInfo* parse_info = info->parse_info();
|
2016-03-04 16:10:55 +00:00
|
|
|
|
2016-05-10 09:47:50 +00:00
|
|
|
info->SetOptimizingForOsr(osr_ast_id, osr_frame);
|
2016-03-04 16:10:55 +00:00
|
|
|
|
2016-04-15 13:40:47 +00:00
|
|
|
// Do not use Crankshaft/TurboFan if we need to be able to set break points.
|
|
|
|
if (info->shared_info()->HasDebugInfo()) {
|
|
|
|
info->AbortOptimization(kFunctionBeingDebugged);
|
|
|
|
return MaybeHandle<Code>();
|
|
|
|
}
|
|
|
|
|
|
|
|
// Limit the number of times we try to optimize functions.
|
|
|
|
const int kMaxOptCount =
|
|
|
|
FLAG_deopt_every_n_times == 0 ? FLAG_max_opt_count : 1000;
|
|
|
|
if (info->shared_info()->opt_count() > kMaxOptCount) {
|
|
|
|
info->AbortOptimization(kOptimizedTooManyTimes);
|
|
|
|
return MaybeHandle<Code>();
|
|
|
|
}
|
|
|
|
|
2016-04-27 17:45:26 +00:00
|
|
|
TimerEventScope<TimerEventOptimizeCode> optimize_code_timer(isolate);
|
2016-06-17 12:03:58 +00:00
|
|
|
RuntimeCallTimerScope runtimeTimer(isolate, &RuntimeCallStats::OptimizeCode);
|
2016-09-01 20:07:34 +00:00
|
|
|
TRACE_EVENT0(TRACE_DISABLED_BY_DEFAULT("v8.compile"), "V8.OptimizeCode");
|
2016-04-27 17:45:26 +00:00
|
|
|
|
2016-05-02 14:44:29 +00:00
|
|
|
// TurboFan can optimize directly from existing bytecode.
|
2016-07-25 09:42:48 +00:00
|
|
|
if (FLAG_turbo_from_bytecode && use_turbofan && ShouldUseIgnition(info)) {
|
|
|
|
if (!Compiler::EnsureBytecode(info)) {
|
|
|
|
if (isolate->has_pending_exception()) isolate->clear_pending_exception();
|
|
|
|
return MaybeHandle<Code>();
|
|
|
|
}
|
2016-04-27 17:45:26 +00:00
|
|
|
info->MarkAsOptimizeFromBytecode();
|
|
|
|
}
|
|
|
|
|
2016-05-04 10:56:53 +00:00
|
|
|
if (IsEvalToplevel(shared)) {
|
|
|
|
parse_info->set_eval();
|
|
|
|
if (function->context()->IsNativeContext()) parse_info->set_global();
|
|
|
|
parse_info->set_toplevel();
|
|
|
|
parse_info->set_allow_lazy_parsing(false);
|
|
|
|
parse_info->set_lazy(false);
|
|
|
|
}
|
|
|
|
|
2016-08-25 11:56:13 +00:00
|
|
|
// In case of concurrent recompilation, all handles below this point will be
|
|
|
|
// allocated in a deferred handle scope that is detached and handed off to
|
|
|
|
// the background thread when we return.
|
|
|
|
std::unique_ptr<CompilationHandleScope> compilation;
|
|
|
|
if (mode == Compiler::CONCURRENT) {
|
|
|
|
compilation.reset(new CompilationHandleScope(info));
|
|
|
|
}
|
|
|
|
|
|
|
|
// In case of TurboFan, all handles below will be canonicalized.
|
|
|
|
std::unique_ptr<CanonicalHandleScope> canonical;
|
|
|
|
if (use_turbofan) canonical.reset(new CanonicalHandleScope(info->isolate()));
|
|
|
|
|
|
|
|
// Reopen handles in the new CompilationHandleScope.
|
|
|
|
info->ReopenHandlesInNewHandleScope();
|
|
|
|
parse_info->ReopenHandlesInNewHandleScope();
|
|
|
|
|
2016-03-04 16:10:55 +00:00
|
|
|
if (mode == Compiler::CONCURRENT) {
|
2016-04-27 17:45:26 +00:00
|
|
|
if (GetOptimizedCodeLater(job.get())) {
|
2016-07-25 11:12:42 +00:00
|
|
|
job.release(); // The background recompile job owns this now.
|
2016-03-04 16:10:55 +00:00
|
|
|
return isolate->builtins()->InOptimizationQueue();
|
|
|
|
}
|
|
|
|
} else {
|
2016-04-27 17:45:26 +00:00
|
|
|
if (GetOptimizedCodeNow(job.get())) return info->code();
|
2016-03-04 16:10:55 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
if (isolate->has_pending_exception()) isolate->clear_pending_exception();
|
|
|
|
return MaybeHandle<Code>();
|
|
|
|
}
|
|
|
|
|
2016-08-25 10:24:53 +00:00
|
|
|
CompilationJob::Status FinalizeOptimizedCompilationJob(CompilationJob* job) {
|
|
|
|
CompilationInfo* info = job->info();
|
|
|
|
Isolate* isolate = info->isolate();
|
|
|
|
|
|
|
|
TimerEventScope<TimerEventRecompileSynchronous> timer(info->isolate());
|
|
|
|
RuntimeCallTimerScope runtimeTimer(isolate,
|
|
|
|
&RuntimeCallStats::RecompileSynchronous);
|
2016-09-01 20:07:34 +00:00
|
|
|
TRACE_EVENT0(TRACE_DISABLED_BY_DEFAULT("v8.compile"),
|
|
|
|
"V8.RecompileSynchronous");
|
2016-08-25 10:24:53 +00:00
|
|
|
|
|
|
|
Handle<SharedFunctionInfo> shared = info->shared_info();
|
|
|
|
shared->code()->set_profiler_ticks(0);
|
|
|
|
|
|
|
|
DCHECK(!shared->HasDebugInfo());
|
|
|
|
|
|
|
|
// 1) Optimization on the concurrent thread may have failed.
|
|
|
|
// 2) The function may have already been optimized by OSR. Simply continue.
|
|
|
|
// Except when OSR already disabled optimization for some reason.
|
|
|
|
// 3) The code may have already been invalidated due to dependency change.
|
|
|
|
// 4) Code generation may have failed.
|
|
|
|
if (job->state() == CompilationJob::State::kReadyToFinalize) {
|
|
|
|
if (shared->optimization_disabled()) {
|
|
|
|
job->RetryOptimization(kOptimizationDisabled);
|
|
|
|
} else if (info->dependencies()->HasAborted()) {
|
|
|
|
job->RetryOptimization(kBailedOutDueToDependencyChange);
|
|
|
|
} else if (job->FinalizeJob() == CompilationJob::SUCCEEDED) {
|
|
|
|
job->RecordOptimizedCompilationStats();
|
|
|
|
RecordFunctionCompilation(CodeEventListener::LAZY_COMPILE_TAG, info);
|
|
|
|
if (shared
|
|
|
|
->SearchOptimizedCodeMap(info->context()->native_context(),
|
|
|
|
info->osr_ast_id())
|
|
|
|
.code == nullptr) {
|
|
|
|
InsertCodeIntoOptimizedCodeMap(info);
|
|
|
|
}
|
|
|
|
if (FLAG_trace_opt) {
|
|
|
|
PrintF("[completed optimizing ");
|
|
|
|
info->closure()->ShortPrint();
|
|
|
|
PrintF("]\n");
|
|
|
|
}
|
|
|
|
info->closure()->ReplaceCode(*info->code());
|
|
|
|
return CompilationJob::SUCCEEDED;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
DCHECK(job->state() == CompilationJob::State::kFailed);
|
|
|
|
if (FLAG_trace_opt) {
|
|
|
|
PrintF("[aborted optimizing ");
|
|
|
|
info->closure()->ShortPrint();
|
|
|
|
PrintF(" because: %s]\n", GetBailoutReason(info->bailout_reason()));
|
|
|
|
}
|
|
|
|
info->closure()->ReplaceCode(shared->code());
|
|
|
|
return CompilationJob::FAILED;
|
|
|
|
}
|
|
|
|
|
2016-05-02 08:35:26 +00:00
|
|
|
class InterpreterActivationsFinder : public ThreadVisitor,
|
|
|
|
public OptimizedFunctionVisitor {
|
2016-04-25 10:46:38 +00:00
|
|
|
public:
|
|
|
|
explicit InterpreterActivationsFinder(SharedFunctionInfo* shared)
|
|
|
|
: shared_(shared), has_activations_(false) {}
|
|
|
|
|
|
|
|
void VisitThread(Isolate* isolate, ThreadLocalTop* top) {
|
2016-05-19 12:27:18 +00:00
|
|
|
Address* activation_pc_address = nullptr;
|
2016-04-25 10:46:38 +00:00
|
|
|
JavaScriptFrameIterator it(isolate, top);
|
2016-05-19 12:27:18 +00:00
|
|
|
for (; !it.done(); it.Advance()) {
|
2016-04-25 10:46:38 +00:00
|
|
|
JavaScriptFrame* frame = it.frame();
|
2016-08-05 07:51:23 +00:00
|
|
|
if (FLAG_turbo_from_bytecode && FLAG_ignition_osr &&
|
|
|
|
frame->is_optimized() && frame->function()->shared() == shared_) {
|
|
|
|
// If we are able to optimize functions directly from bytecode, then
|
|
|
|
// there might be optimized OSR code active on the stack that is not
|
|
|
|
// reachable through a function. We count this as an activation.
|
|
|
|
has_activations_ = true;
|
|
|
|
}
|
|
|
|
if (frame->is_interpreted() && frame->function()->shared() == shared_) {
|
2016-05-19 12:27:18 +00:00
|
|
|
has_activations_ = true;
|
|
|
|
activation_pc_address = frame->pc_address();
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
if (activation_pc_address) {
|
|
|
|
activation_pc_addresses_.push_back(activation_pc_address);
|
2016-04-25 10:46:38 +00:00
|
|
|
}
|
|
|
|
}
|
2016-05-02 08:35:26 +00:00
|
|
|
|
|
|
|
void VisitFunction(JSFunction* function) {
|
|
|
|
if (function->Inlines(shared_)) has_activations_ = true;
|
|
|
|
}
|
|
|
|
|
|
|
|
void EnterContext(Context* context) {}
|
|
|
|
void LeaveContext(Context* context) {}
|
2016-05-19 12:27:18 +00:00
|
|
|
|
|
|
|
bool MarkActivationsForBaselineOnReturn(Isolate* isolate) {
|
|
|
|
if (activation_pc_addresses_.empty()) return false;
|
|
|
|
|
|
|
|
for (Address* activation_pc_address : activation_pc_addresses_) {
|
|
|
|
DCHECK(isolate->inner_pointer_to_code_cache()
|
|
|
|
->GetCacheEntry(*activation_pc_address)
|
|
|
|
->code->is_interpreter_trampoline_builtin());
|
|
|
|
*activation_pc_address =
|
|
|
|
isolate->builtins()->InterpreterMarkBaselineOnReturn()->entry();
|
|
|
|
}
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
|
|
|
bool has_activations() { return has_activations_; }
|
|
|
|
|
|
|
|
private:
|
|
|
|
SharedFunctionInfo* shared_;
|
|
|
|
bool has_activations_;
|
|
|
|
std::vector<Address*> activation_pc_addresses_;
|
2016-04-25 10:46:38 +00:00
|
|
|
};
|
|
|
|
|
2016-05-19 12:27:18 +00:00
|
|
|
bool HasInterpreterActivations(
|
|
|
|
Isolate* isolate, InterpreterActivationsFinder* activations_finder) {
|
|
|
|
activations_finder->VisitThread(isolate, isolate->thread_local_top());
|
|
|
|
isolate->thread_manager()->IterateArchivedThreads(activations_finder);
|
2016-05-02 08:35:26 +00:00
|
|
|
if (FLAG_turbo_from_bytecode) {
|
|
|
|
// If we are able to optimize functions directly from bytecode, then there
|
|
|
|
// might be optimized functions that rely on bytecode being around. We need
|
|
|
|
// to prevent switching the given function to baseline code in those cases.
|
2016-05-19 12:27:18 +00:00
|
|
|
Deoptimizer::VisitAllOptimizedFunctions(isolate, activations_finder);
|
2016-05-02 08:35:26 +00:00
|
|
|
}
|
2016-05-19 12:27:18 +00:00
|
|
|
return activations_finder->has_activations();
|
2016-04-25 10:46:38 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
MaybeHandle<Code> GetBaselineCode(Handle<JSFunction> function) {
|
|
|
|
Isolate* isolate = function->GetIsolate();
|
|
|
|
VMState<COMPILER> state(isolate);
|
|
|
|
PostponeInterruptsScope postpone(isolate);
|
2016-04-28 09:14:52 +00:00
|
|
|
Zone zone(isolate->allocator());
|
|
|
|
ParseInfo parse_info(&zone, function);
|
|
|
|
CompilationInfo info(&parse_info, function);
|
2016-04-25 10:46:38 +00:00
|
|
|
|
|
|
|
// Reset profiler ticks, function is no longer considered hot.
|
|
|
|
if (function->shared()->HasBytecodeArray()) {
|
|
|
|
function->shared()->set_profiler_ticks(0);
|
|
|
|
}
|
|
|
|
|
2016-04-26 08:52:52 +00:00
|
|
|
// Nothing left to do if the function already has baseline code.
|
|
|
|
if (function->shared()->code()->kind() == Code::FUNCTION) {
|
|
|
|
return Handle<Code>(function->shared()->code());
|
|
|
|
}
|
|
|
|
|
2016-04-25 10:46:38 +00:00
|
|
|
// We do not switch to baseline code when the debugger might have created a
|
|
|
|
// copy of the bytecode with break slots to be able to set break points.
|
|
|
|
if (function->shared()->HasDebugInfo()) {
|
|
|
|
return MaybeHandle<Code>();
|
|
|
|
}
|
|
|
|
|
2016-05-31 17:13:58 +00:00
|
|
|
// TODO(4280): For now we do not switch generators or async functions to
|
|
|
|
// baseline code because there might be suspended activations stored in
|
|
|
|
// generator objects on the heap. We could eventually go directly to
|
|
|
|
// TurboFan in this case.
|
|
|
|
if (function->shared()->is_resumable()) {
|
2016-04-25 10:46:38 +00:00
|
|
|
return MaybeHandle<Code>();
|
|
|
|
}
|
|
|
|
|
|
|
|
// TODO(4280): For now we disable switching to baseline code in the presence
|
2016-08-23 07:40:51 +00:00
|
|
|
// of interpreter activations of the given function. The reasons is that the
|
|
|
|
// underlying bytecode is cleared below. Note that this only applies in case
|
|
|
|
// the --ignition-preserve-bytecode flag is not passed.
|
|
|
|
if (!FLAG_ignition_preserve_bytecode) {
|
|
|
|
InterpreterActivationsFinder activations_finder(function->shared());
|
|
|
|
if (HasInterpreterActivations(isolate, &activations_finder)) {
|
2016-05-19 12:27:18 +00:00
|
|
|
if (FLAG_trace_opt) {
|
|
|
|
OFStream os(stdout);
|
2016-08-23 07:40:51 +00:00
|
|
|
os << "[unable to switch " << Brief(*function) << " due to activations]"
|
|
|
|
<< std::endl;
|
2016-05-19 12:27:18 +00:00
|
|
|
}
|
|
|
|
|
2016-08-23 07:40:51 +00:00
|
|
|
if (activations_finder.MarkActivationsForBaselineOnReturn(isolate)) {
|
|
|
|
if (FLAG_trace_opt) {
|
|
|
|
OFStream os(stdout);
|
|
|
|
os << "[marking " << Brief(function->shared())
|
|
|
|
<< " for baseline recompilation on return]" << std::endl;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
return MaybeHandle<Code>();
|
|
|
|
}
|
2016-04-25 10:46:38 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
if (FLAG_trace_opt) {
|
|
|
|
OFStream os(stdout);
|
|
|
|
os << "[switching method " << Brief(*function) << " to baseline code]"
|
|
|
|
<< std::endl;
|
|
|
|
}
|
|
|
|
|
|
|
|
// Parse and update CompilationInfo with the results.
|
2016-09-15 10:26:19 +00:00
|
|
|
if (!Parse(info.parse_info())) return MaybeHandle<Code>();
|
2016-04-25 10:46:38 +00:00
|
|
|
Handle<SharedFunctionInfo> shared = info.shared_info();
|
|
|
|
DCHECK_EQ(shared->language_mode(), info.literal()->language_mode());
|
|
|
|
|
|
|
|
// Compile baseline code using the full code generator.
|
|
|
|
if (!Compiler::Analyze(info.parse_info()) ||
|
|
|
|
!FullCodeGenerator::MakeCode(&info)) {
|
|
|
|
if (!isolate->has_pending_exception()) isolate->StackOverflow();
|
|
|
|
return MaybeHandle<Code>();
|
|
|
|
}
|
|
|
|
|
|
|
|
// TODO(4280): For now we play it safe and remove the bytecode array when we
|
|
|
|
// switch to baseline code. We might consider keeping around the bytecode so
|
2016-08-23 07:40:51 +00:00
|
|
|
// that it can be used as the "source of truth" eventually. Note that this
|
|
|
|
// only applies in case the --ignition-preserve-bytecode flag is not passed.
|
2016-08-10 13:53:45 +00:00
|
|
|
if (!FLAG_ignition_preserve_bytecode) shared->ClearBytecodeArray();
|
2016-04-25 10:46:38 +00:00
|
|
|
|
|
|
|
// Update the shared function info with the scope info.
|
|
|
|
InstallSharedScopeInfo(&info, shared);
|
|
|
|
|
|
|
|
// Install compilation result on the shared function info
|
|
|
|
InstallSharedCompilationResult(&info, shared);
|
|
|
|
|
|
|
|
// Record the function compilation event.
|
2016-06-15 13:22:39 +00:00
|
|
|
RecordFunctionCompilation(CodeEventListener::LAZY_COMPILE_TAG, &info);
|
2016-04-25 10:46:38 +00:00
|
|
|
|
|
|
|
return info.code();
|
|
|
|
}
|
|
|
|
|
2016-03-04 10:44:31 +00:00
|
|
|
MaybeHandle<Code> GetLazyCode(Handle<JSFunction> function) {
|
2014-10-30 14:40:30 +00:00
|
|
|
Isolate* isolate = function->GetIsolate();
|
|
|
|
DCHECK(!isolate->has_pending_exception());
|
2014-09-17 15:29:42 +00:00
|
|
|
DCHECK(!function->is_compiled());
|
2016-02-15 17:29:22 +00:00
|
|
|
TimerEventScope<TimerEventCompileCode> compile_timer(isolate);
|
2016-06-17 12:03:58 +00:00
|
|
|
RuntimeCallTimerScope runtimeTimer(isolate,
|
|
|
|
&RuntimeCallStats::CompileCodeLazy);
|
2016-09-01 20:07:34 +00:00
|
|
|
TRACE_EVENT0(TRACE_DISABLED_BY_DEFAULT("v8.compile"), "V8.CompileCode");
|
2015-01-22 18:38:19 +00:00
|
|
|
AggregatedHistogramTimerScope timer(isolate->counters()->compile_lazy());
|
2016-04-13 10:54:31 +00:00
|
|
|
|
|
|
|
if (FLAG_turbo_cache_shared_code) {
|
2016-04-14 09:20:05 +00:00
|
|
|
Handle<Code> cached_code;
|
|
|
|
if (GetCodeFromOptimizedCodeMap(function, BailoutId::None())
|
|
|
|
.ToHandle(&cached_code)) {
|
|
|
|
if (FLAG_trace_opt) {
|
|
|
|
PrintF("[found optimized code for ");
|
|
|
|
function->ShortPrint();
|
|
|
|
PrintF(" during unoptimized compile]\n");
|
|
|
|
}
|
|
|
|
DCHECK(function->shared()->is_compiled());
|
|
|
|
return cached_code;
|
2016-04-13 10:54:31 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2014-09-17 15:29:42 +00:00
|
|
|
if (function->shared()->is_compiled()) {
|
|
|
|
return Handle<Code>(function->shared()->code());
|
|
|
|
}
|
|
|
|
|
2016-08-12 13:44:43 +00:00
|
|
|
if (function->shared()->HasBytecodeArray()) {
|
|
|
|
Handle<Code> entry = isolate->builtins()->InterpreterEntryTrampoline();
|
|
|
|
function->shared()->ReplaceCode(*entry);
|
|
|
|
return entry;
|
|
|
|
}
|
|
|
|
|
2016-04-28 09:14:52 +00:00
|
|
|
Zone zone(isolate->allocator());
|
|
|
|
ParseInfo parse_info(&zone, function);
|
|
|
|
CompilationInfo info(&parse_info, function);
|
2014-09-17 15:29:42 +00:00
|
|
|
Handle<Code> result;
|
2016-04-06 19:20:10 +00:00
|
|
|
ASSIGN_RETURN_ON_EXCEPTION(isolate, result, GetUnoptimizedCode(&info), Code);
|
2013-12-23 14:30:35 +00:00
|
|
|
|
2015-03-05 13:46:31 +00:00
|
|
|
if (FLAG_always_opt) {
|
2014-04-22 14:55:47 +00:00
|
|
|
Handle<Code> opt_code;
|
2016-03-04 16:10:55 +00:00
|
|
|
if (GetOptimizedCode(function, Compiler::NOT_CONCURRENT)
|
2016-01-18 10:23:49 +00:00
|
|
|
.ToHandle(&opt_code)) {
|
2014-04-22 14:55:47 +00:00
|
|
|
result = opt_code;
|
|
|
|
}
|
2013-10-28 17:54:43 +00:00
|
|
|
}
|
2012-03-15 11:51:26 +00:00
|
|
|
|
2013-12-23 14:30:35 +00:00
|
|
|
return result;
|
|
|
|
}
|
2008-07-03 15:10:15 +00:00
|
|
|
|
2014-09-18 09:02:36 +00:00
|
|
|
|
2016-03-18 13:56:57 +00:00
|
|
|
Handle<SharedFunctionInfo> NewSharedFunctionInfoForLiteral(
|
2016-03-18 10:46:40 +00:00
|
|
|
Isolate* isolate, FunctionLiteral* literal, Handle<Script> script) {
|
|
|
|
Handle<Code> code = isolate->builtins()->CompileLazy();
|
|
|
|
Handle<ScopeInfo> scope_info = handle(ScopeInfo::Empty(isolate));
|
|
|
|
Handle<SharedFunctionInfo> result = isolate->factory()->NewSharedFunctionInfo(
|
|
|
|
literal->name(), literal->materialized_literal_count(), literal->kind(),
|
|
|
|
code, scope_info);
|
|
|
|
SharedFunctionInfo::InitFromFunctionLiteral(result, literal);
|
|
|
|
SharedFunctionInfo::SetScript(result, script);
|
|
|
|
return result;
|
|
|
|
}
|
2013-12-23 14:30:35 +00:00
|
|
|
|
2016-03-18 13:56:57 +00:00
|
|
|
Handle<SharedFunctionInfo> CompileToplevel(CompilationInfo* info) {
|
2013-12-23 14:30:35 +00:00
|
|
|
Isolate* isolate = info->isolate();
|
2016-02-15 17:29:22 +00:00
|
|
|
TimerEventScope<TimerEventCompileCode> timer(isolate);
|
2016-06-17 12:03:58 +00:00
|
|
|
RuntimeCallTimerScope runtimeTimer(isolate, &RuntimeCallStats::CompileCode);
|
2016-09-01 20:07:34 +00:00
|
|
|
TRACE_EVENT0(TRACE_DISABLED_BY_DEFAULT("v8.compile"), "V8.CompileCode");
|
2013-12-23 15:41:44 +00:00
|
|
|
PostponeInterruptsScope postpone(isolate);
|
2014-08-04 11:34:54 +00:00
|
|
|
DCHECK(!isolate->native_context().is_null());
|
2015-03-09 14:51:13 +00:00
|
|
|
ParseInfo* parse_info = info->parse_info();
|
|
|
|
Handle<Script> script = parse_info->script();
|
2013-12-23 14:30:35 +00:00
|
|
|
|
|
|
|
// TODO(svenpanne) Obscure place for this, perhaps move to OnBeforeCompile?
|
|
|
|
FixedArray* array = isolate->native_context()->embedder_data();
|
2015-03-19 08:18:35 +00:00
|
|
|
script->set_context_data(array->get(v8::Context::kDebugIdIndex));
|
2013-12-23 14:30:35 +00:00
|
|
|
|
2014-05-27 13:20:58 +00:00
|
|
|
isolate->debug()->OnBeforeCompile(script);
|
2013-12-23 14:30:35 +00:00
|
|
|
|
2015-03-09 14:51:13 +00:00
|
|
|
DCHECK(parse_info->is_eval() || parse_info->is_global() ||
|
|
|
|
parse_info->is_module());
|
2013-12-23 14:30:35 +00:00
|
|
|
|
2015-03-09 14:51:13 +00:00
|
|
|
parse_info->set_toplevel();
|
2014-09-29 07:53:22 +00:00
|
|
|
|
2013-12-23 14:30:35 +00:00
|
|
|
Handle<SharedFunctionInfo> result;
|
|
|
|
|
|
|
|
{ VMState<COMPILER> state(info->isolate());
|
2015-03-09 14:51:13 +00:00
|
|
|
if (parse_info->literal() == NULL) {
|
2015-08-19 16:51:37 +00:00
|
|
|
// Parse the script if needed (if it's already parsed, literal() is
|
2015-07-20 14:53:28 +00:00
|
|
|
// non-NULL). If compiling for debugging, we may eagerly compile inner
|
|
|
|
// functions, so do not parse lazily in that case.
|
2015-03-09 14:51:13 +00:00
|
|
|
ScriptCompiler::CompileOptions options = parse_info->compile_options();
|
|
|
|
bool parse_allow_lazy = (options == ScriptCompiler::kConsumeParserCache ||
|
|
|
|
String::cast(script->source())->length() >
|
|
|
|
FLAG_min_preparse_length) &&
|
2015-07-20 14:53:28 +00:00
|
|
|
!info->is_debug();
|
2014-09-12 09:12:08 +00:00
|
|
|
|
2016-03-14 18:55:41 +00:00
|
|
|
// Consider parsing eagerly when targeting the code cache.
|
|
|
|
parse_allow_lazy &= !(FLAG_serialize_eager && info->will_serialize());
|
|
|
|
|
2016-03-24 18:37:56 +00:00
|
|
|
// Consider parsing eagerly when targeting Ignition.
|
|
|
|
parse_allow_lazy &= !(FLAG_ignition && FLAG_ignition_eager &&
|
|
|
|
!isolate->serializer_enabled());
|
|
|
|
|
2015-03-09 14:51:13 +00:00
|
|
|
parse_info->set_allow_lazy_parsing(parse_allow_lazy);
|
2014-09-12 09:12:08 +00:00
|
|
|
if (!parse_allow_lazy &&
|
2015-03-09 14:51:13 +00:00
|
|
|
(options == ScriptCompiler::kProduceParserCache ||
|
|
|
|
options == ScriptCompiler::kConsumeParserCache)) {
|
2014-09-12 09:12:08 +00:00
|
|
|
// We are going to parse eagerly, but we either 1) have cached data
|
|
|
|
// produced by lazy parsing or 2) are asked to generate cached data.
|
|
|
|
// Eager parsing cannot benefit from cached data, and producing cached
|
|
|
|
// data while parsing eagerly is not implemented.
|
2015-03-09 14:51:13 +00:00
|
|
|
parse_info->set_cached_data(nullptr);
|
|
|
|
parse_info->set_compile_options(ScriptCompiler::kNoCompileOptions);
|
2014-09-12 09:12:08 +00:00
|
|
|
}
|
2016-08-05 10:09:50 +00:00
|
|
|
|
2016-09-15 10:26:19 +00:00
|
|
|
if (!Parse(parse_info)) {
|
2014-09-12 09:12:08 +00:00
|
|
|
return Handle<SharedFunctionInfo>::null();
|
|
|
|
}
|
2013-12-23 14:30:35 +00:00
|
|
|
}
|
|
|
|
|
2015-07-22 07:37:21 +00:00
|
|
|
DCHECK(!info->is_debug() || !parse_info->allow_lazy_parsing());
|
|
|
|
|
2015-08-19 16:51:37 +00:00
|
|
|
FunctionLiteral* lit = parse_info->literal();
|
2013-12-23 14:30:35 +00:00
|
|
|
|
|
|
|
// Measure how long it takes to do the compilation; only take the
|
|
|
|
// rest of the function into account to avoid overlap with the
|
|
|
|
// parsing statistics.
|
2016-05-13 15:53:27 +00:00
|
|
|
RuntimeCallTimerScope runtimeTimer(
|
|
|
|
isolate, parse_info->is_eval() ? &RuntimeCallStats::CompileEval
|
|
|
|
: &RuntimeCallStats::Compile);
|
2016-05-04 15:57:34 +00:00
|
|
|
HistogramTimer* rate = parse_info->is_eval()
|
|
|
|
? info->isolate()->counters()->compile_eval()
|
|
|
|
: info->isolate()->counters()->compile();
|
2013-12-23 14:30:35 +00:00
|
|
|
HistogramTimerScope timer(rate);
|
2016-09-01 20:07:34 +00:00
|
|
|
TRACE_EVENT0(TRACE_DISABLED_BY_DEFAULT("v8.compile"),
|
|
|
|
parse_info->is_eval() ? "V8.CompileEval" : "V8.Compile");
|
2013-12-23 14:30:35 +00:00
|
|
|
|
2016-03-18 10:46:40 +00:00
|
|
|
// Allocate a shared function info object.
|
2016-06-30 09:26:30 +00:00
|
|
|
DCHECK_EQ(kNoSourcePosition, lit->function_token_position());
|
2016-03-18 10:46:40 +00:00
|
|
|
result = NewSharedFunctionInfoForLiteral(isolate, lit, script);
|
2015-02-11 14:51:59 +00:00
|
|
|
result->set_is_toplevel(true);
|
2016-05-04 15:57:34 +00:00
|
|
|
if (parse_info->is_eval()) {
|
2015-08-11 08:20:29 +00:00
|
|
|
// Eval scripts cannot be (re-)compiled without context.
|
|
|
|
result->set_allows_lazy_compilation_without_context(false);
|
|
|
|
}
|
2016-04-05 14:07:15 +00:00
|
|
|
parse_info->set_shared_info(result);
|
2013-12-23 14:30:35 +00:00
|
|
|
|
2016-03-18 10:46:40 +00:00
|
|
|
// Compile the code.
|
2016-04-20 14:11:53 +00:00
|
|
|
if (!CompileUnoptimizedCode(info)) {
|
2016-03-18 10:46:40 +00:00
|
|
|
return Handle<SharedFunctionInfo>::null();
|
|
|
|
}
|
|
|
|
|
2016-04-20 08:50:24 +00:00
|
|
|
// Update the shared function info with the scope info.
|
|
|
|
InstallSharedScopeInfo(info, result);
|
|
|
|
|
2016-03-18 10:46:40 +00:00
|
|
|
// Install compilation result on the shared function info
|
2016-04-20 08:50:24 +00:00
|
|
|
InstallSharedCompilationResult(info, result);
|
2016-03-18 10:46:40 +00:00
|
|
|
|
2015-10-07 14:27:24 +00:00
|
|
|
Handle<String> script_name =
|
|
|
|
script->name()->IsString()
|
|
|
|
? Handle<String>(String::cast(script->name()))
|
|
|
|
: isolate->factory()->empty_string();
|
2016-06-15 13:22:39 +00:00
|
|
|
CodeEventListener::LogEventsAndTags log_tag =
|
2016-05-04 15:57:34 +00:00
|
|
|
parse_info->is_eval()
|
2016-06-15 13:22:39 +00:00
|
|
|
? CodeEventListener::EVAL_TAG
|
|
|
|
: Logger::ToNativeByScript(CodeEventListener::SCRIPT_TAG, *script);
|
2013-12-23 14:30:35 +00:00
|
|
|
|
2016-04-20 11:05:53 +00:00
|
|
|
PROFILE(isolate, CodeCreateEvent(log_tag, result->abstract_code(), *result,
|
2016-04-21 13:16:53 +00:00
|
|
|
*script_name));
|
2013-12-23 14:30:35 +00:00
|
|
|
|
2014-09-12 09:12:08 +00:00
|
|
|
if (!script.is_null())
|
|
|
|
script->set_compilation_state(Script::COMPILATION_STATE_COMPILED);
|
2013-12-23 14:30:35 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
return result;
|
|
|
|
}
|
|
|
|
|
2016-03-18 13:56:57 +00:00
|
|
|
} // namespace
|
|
|
|
|
|
|
|
// ----------------------------------------------------------------------------
|
|
|
|
// Implementation of Compiler
|
|
|
|
|
|
|
|
bool Compiler::Analyze(ParseInfo* info) {
|
|
|
|
DCHECK_NOT_NULL(info->literal());
|
|
|
|
if (!Rewriter::Rewrite(info)) return false;
|
2016-08-31 08:47:04 +00:00
|
|
|
DeclarationScope::Analyze(info, AnalyzeMode::kRegular);
|
2016-03-18 13:56:57 +00:00
|
|
|
if (!Renumber(info)) return false;
|
|
|
|
DCHECK_NOT_NULL(info->scope());
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
|
|
|
bool Compiler::ParseAndAnalyze(ParseInfo* info) {
|
2016-09-15 10:26:19 +00:00
|
|
|
if (!Parse(info)) return false;
|
2016-04-18 13:06:51 +00:00
|
|
|
if (!Compiler::Analyze(info)) return false;
|
|
|
|
DCHECK_NOT_NULL(info->literal());
|
|
|
|
DCHECK_NOT_NULL(info->scope());
|
|
|
|
return true;
|
2016-03-18 13:56:57 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
bool Compiler::Compile(Handle<JSFunction> function, ClearExceptionFlag flag) {
|
|
|
|
if (function->is_compiled()) return true;
|
2016-04-18 14:11:44 +00:00
|
|
|
Isolate* isolate = function->GetIsolate();
|
|
|
|
DCHECK(AllowCompilation::IsAllowed(isolate));
|
2016-04-13 10:54:31 +00:00
|
|
|
|
2016-04-18 14:11:44 +00:00
|
|
|
// Start a compilation.
|
2016-03-18 13:56:57 +00:00
|
|
|
Handle<Code> code;
|
2016-04-18 14:11:44 +00:00
|
|
|
if (!GetLazyCode(function).ToHandle(&code)) {
|
2016-03-18 13:56:57 +00:00
|
|
|
if (flag == CLEAR_EXCEPTION) {
|
2016-04-18 14:11:44 +00:00
|
|
|
isolate->clear_pending_exception();
|
2016-03-18 13:56:57 +00:00
|
|
|
}
|
|
|
|
return false;
|
|
|
|
}
|
2016-04-13 10:54:31 +00:00
|
|
|
|
2016-04-18 14:11:44 +00:00
|
|
|
// Install code on closure.
|
2016-03-18 13:56:57 +00:00
|
|
|
function->ReplaceCode(*code);
|
2016-05-27 08:09:12 +00:00
|
|
|
JSFunction::EnsureLiterals(function);
|
2016-04-18 14:11:44 +00:00
|
|
|
|
|
|
|
// Check postconditions on success.
|
|
|
|
DCHECK(!isolate->has_pending_exception());
|
|
|
|
DCHECK(function->shared()->is_compiled());
|
2016-03-18 13:56:57 +00:00
|
|
|
DCHECK(function->is_compiled());
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
2016-04-25 10:46:38 +00:00
|
|
|
bool Compiler::CompileBaseline(Handle<JSFunction> function) {
|
|
|
|
Isolate* isolate = function->GetIsolate();
|
|
|
|
DCHECK(AllowCompilation::IsAllowed(isolate));
|
|
|
|
|
|
|
|
// Start a compilation.
|
|
|
|
Handle<Code> code;
|
|
|
|
if (!GetBaselineCode(function).ToHandle(&code)) {
|
|
|
|
// Baseline generation failed, get unoptimized code.
|
|
|
|
DCHECK(function->shared()->is_compiled());
|
|
|
|
code = handle(function->shared()->code());
|
|
|
|
isolate->clear_pending_exception();
|
|
|
|
}
|
|
|
|
|
|
|
|
// Install code on closure.
|
|
|
|
function->ReplaceCode(*code);
|
2016-06-02 12:42:53 +00:00
|
|
|
JSFunction::EnsureLiterals(function);
|
2016-04-25 10:46:38 +00:00
|
|
|
|
|
|
|
// Check postconditions on success.
|
|
|
|
DCHECK(!isolate->has_pending_exception());
|
|
|
|
DCHECK(function->shared()->is_compiled());
|
|
|
|
DCHECK(function->is_compiled());
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
2016-03-18 13:56:57 +00:00
|
|
|
bool Compiler::CompileOptimized(Handle<JSFunction> function,
|
|
|
|
ConcurrencyMode mode) {
|
2016-04-18 14:11:44 +00:00
|
|
|
if (function->IsOptimized()) return true;
|
|
|
|
Isolate* isolate = function->GetIsolate();
|
|
|
|
DCHECK(AllowCompilation::IsAllowed(isolate));
|
|
|
|
|
|
|
|
// Start a compilation.
|
2016-03-18 13:56:57 +00:00
|
|
|
Handle<Code> code;
|
2016-04-18 14:11:44 +00:00
|
|
|
if (!GetOptimizedCode(function, mode).ToHandle(&code)) {
|
2016-03-18 13:56:57 +00:00
|
|
|
// Optimization failed, get unoptimized code.
|
2016-04-18 14:11:44 +00:00
|
|
|
DCHECK(!isolate->has_pending_exception());
|
|
|
|
if (function->shared()->is_compiled()) {
|
|
|
|
code = handle(function->shared()->code(), isolate);
|
2016-08-22 11:29:25 +00:00
|
|
|
} else if (function->shared()->HasBytecodeArray()) {
|
|
|
|
code = isolate->builtins()->InterpreterEntryTrampoline();
|
|
|
|
function->shared()->ReplaceCode(*code);
|
2016-04-18 14:11:44 +00:00
|
|
|
} else {
|
2016-04-28 09:14:52 +00:00
|
|
|
Zone zone(isolate->allocator());
|
|
|
|
ParseInfo parse_info(&zone, function);
|
|
|
|
CompilationInfo info(&parse_info, function);
|
2016-04-18 14:11:44 +00:00
|
|
|
if (!GetUnoptimizedCode(&info).ToHandle(&code)) {
|
|
|
|
return false;
|
2016-03-18 13:56:57 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2016-04-18 14:11:44 +00:00
|
|
|
// Install code on closure.
|
|
|
|
function->ReplaceCode(*code);
|
2016-05-27 08:09:12 +00:00
|
|
|
JSFunction::EnsureLiterals(function);
|
2016-04-18 14:11:44 +00:00
|
|
|
|
|
|
|
// Check postconditions on success.
|
|
|
|
DCHECK(!isolate->has_pending_exception());
|
|
|
|
DCHECK(function->shared()->is_compiled());
|
|
|
|
DCHECK(function->is_compiled());
|
2016-03-18 13:56:57 +00:00
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
|
|
|
bool Compiler::CompileDebugCode(Handle<JSFunction> function) {
|
2016-04-18 14:11:44 +00:00
|
|
|
Isolate* isolate = function->GetIsolate();
|
|
|
|
DCHECK(AllowCompilation::IsAllowed(isolate));
|
|
|
|
|
|
|
|
// Start a compilation.
|
|
|
|
Zone zone(isolate->allocator());
|
2016-04-18 12:58:09 +00:00
|
|
|
ParseInfo parse_info(&zone, function);
|
|
|
|
CompilationInfo info(&parse_info, Handle<JSFunction>::null());
|
|
|
|
if (IsEvalToplevel(handle(function->shared()))) {
|
2016-04-14 08:07:35 +00:00
|
|
|
parse_info.set_eval();
|
2016-04-18 12:58:09 +00:00
|
|
|
if (function->context()->IsNativeContext()) parse_info.set_global();
|
2016-04-14 08:07:35 +00:00
|
|
|
parse_info.set_toplevel();
|
|
|
|
parse_info.set_allow_lazy_parsing(false);
|
2016-04-18 12:58:09 +00:00
|
|
|
parse_info.set_lazy(false);
|
2016-03-18 13:56:57 +00:00
|
|
|
}
|
2016-04-18 14:11:44 +00:00
|
|
|
info.MarkAsDebug();
|
|
|
|
if (GetUnoptimizedCode(&info).is_null()) {
|
|
|
|
isolate->clear_pending_exception();
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
|
|
|
// Check postconditions on success.
|
|
|
|
DCHECK(!isolate->has_pending_exception());
|
|
|
|
DCHECK(function->shared()->is_compiled());
|
|
|
|
DCHECK(function->shared()->HasDebugCode());
|
|
|
|
return true;
|
2016-03-18 13:56:57 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
bool Compiler::CompileDebugCode(Handle<SharedFunctionInfo> shared) {
|
2016-04-18 14:11:44 +00:00
|
|
|
Isolate* isolate = shared->GetIsolate();
|
|
|
|
DCHECK(AllowCompilation::IsAllowed(isolate));
|
|
|
|
|
|
|
|
// Start a compilation.
|
|
|
|
Zone zone(isolate->allocator());
|
|
|
|
ParseInfo parse_info(&zone, shared);
|
|
|
|
CompilationInfo info(&parse_info, Handle<JSFunction>::null());
|
2016-03-18 13:56:57 +00:00
|
|
|
DCHECK(shared->allows_lazy_compilation_without_context());
|
|
|
|
DCHECK(!IsEvalToplevel(shared));
|
2016-04-18 14:11:44 +00:00
|
|
|
info.MarkAsDebug();
|
|
|
|
if (GetUnoptimizedCode(&info).is_null()) {
|
|
|
|
isolate->clear_pending_exception();
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
|
|
|
// Check postconditions on success.
|
|
|
|
DCHECK(!isolate->has_pending_exception());
|
|
|
|
DCHECK(shared->is_compiled());
|
|
|
|
DCHECK(shared->HasDebugCode());
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
2016-05-18 07:09:37 +00:00
|
|
|
MaybeHandle<JSArray> Compiler::CompileForLiveEdit(Handle<Script> script) {
|
2016-04-18 14:11:44 +00:00
|
|
|
Isolate* isolate = script->GetIsolate();
|
|
|
|
DCHECK(AllowCompilation::IsAllowed(isolate));
|
|
|
|
|
2016-05-12 08:40:38 +00:00
|
|
|
// In order to ensure that live edit function info collection finds the newly
|
|
|
|
// generated shared function infos, clear the script's list temporarily
|
|
|
|
// and restore it at the end of this method.
|
|
|
|
Handle<Object> old_function_infos(script->shared_function_infos(), isolate);
|
|
|
|
script->set_shared_function_infos(Smi::FromInt(0));
|
|
|
|
|
2016-04-18 14:11:44 +00:00
|
|
|
// Start a compilation.
|
|
|
|
Zone zone(isolate->allocator());
|
|
|
|
ParseInfo parse_info(&zone, script);
|
2016-04-08 12:31:38 +00:00
|
|
|
CompilationInfo info(&parse_info, Handle<JSFunction>::null());
|
2016-04-18 16:16:16 +00:00
|
|
|
parse_info.set_global();
|
2016-04-18 14:11:44 +00:00
|
|
|
info.MarkAsDebug();
|
2016-05-18 07:09:37 +00:00
|
|
|
|
2016-04-18 16:16:16 +00:00
|
|
|
// TODO(635): support extensions.
|
2016-05-12 08:40:38 +00:00
|
|
|
const bool compilation_succeeded = !CompileToplevel(&info).is_null();
|
2016-05-18 07:09:37 +00:00
|
|
|
Handle<JSArray> infos;
|
|
|
|
if (compilation_succeeded) {
|
|
|
|
// Check postconditions on success.
|
|
|
|
DCHECK(!isolate->has_pending_exception());
|
|
|
|
infos = LiveEditFunctionTracker::Collect(parse_info.literal(), script,
|
|
|
|
&zone, isolate);
|
|
|
|
}
|
2016-05-12 08:40:38 +00:00
|
|
|
|
|
|
|
// Restore the original function info list in order to remain side-effect
|
|
|
|
// free as much as possible, since some code expects the old shared function
|
|
|
|
// infos to stick around.
|
|
|
|
script->set_shared_function_infos(*old_function_infos);
|
|
|
|
|
2016-05-18 07:09:37 +00:00
|
|
|
return infos;
|
2016-03-18 13:56:57 +00:00
|
|
|
}
|
|
|
|
|
2016-07-25 09:42:48 +00:00
|
|
|
bool Compiler::EnsureBytecode(CompilationInfo* info) {
|
|
|
|
DCHECK(ShouldUseIgnition(info));
|
|
|
|
if (!info->shared_info()->HasBytecodeArray()) {
|
2016-08-24 14:09:31 +00:00
|
|
|
Handle<Code> original_code(info->shared_info()->code());
|
2016-07-25 09:42:48 +00:00
|
|
|
if (GetUnoptimizedCode(info).is_null()) return false;
|
2016-09-05 23:02:55 +00:00
|
|
|
if (info->shared_info()->HasAsmWasmData()) return false;
|
2016-08-24 14:09:31 +00:00
|
|
|
DCHECK(info->shared_info()->is_compiled());
|
|
|
|
if (original_code->kind() == Code::FUNCTION) {
|
|
|
|
// Generating bytecode will install the {InterpreterEntryTrampoline} as
|
|
|
|
// shared code on the function. To avoid an implicit tier down we restore
|
|
|
|
// original baseline code in case it existed beforehand.
|
|
|
|
info->shared_info()->ReplaceCode(*original_code);
|
|
|
|
}
|
2016-07-25 09:42:48 +00:00
|
|
|
}
|
|
|
|
DCHECK(info->shared_info()->HasBytecodeArray());
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
2016-03-18 13:56:57 +00:00
|
|
|
// TODO(turbofan): In the future, unoptimized code with deopt support could
|
|
|
|
// be generated lazily once deopt is triggered.
|
|
|
|
bool Compiler::EnsureDeoptimizationSupport(CompilationInfo* info) {
|
|
|
|
DCHECK_NOT_NULL(info->literal());
|
2016-04-07 09:52:13 +00:00
|
|
|
DCHECK_NOT_NULL(info->scope());
|
2016-03-18 13:56:57 +00:00
|
|
|
Handle<SharedFunctionInfo> shared = info->shared_info();
|
|
|
|
if (!shared->has_deoptimization_support()) {
|
2016-04-19 11:20:13 +00:00
|
|
|
Zone zone(info->isolate()->allocator());
|
|
|
|
CompilationInfo unoptimized(info->parse_info(), info->closure());
|
2016-03-18 13:56:57 +00:00
|
|
|
unoptimized.EnableDeoptimizationSupport();
|
2016-05-10 12:07:06 +00:00
|
|
|
|
2016-05-31 17:13:58 +00:00
|
|
|
// TODO(4280): For now we do not switch generators or async functions to
|
|
|
|
// baseline code because there might be suspended activations stored in
|
|
|
|
// generator objects on the heap. We could eventually go directly to
|
|
|
|
// TurboFan in this case.
|
|
|
|
if (shared->is_resumable()) return false;
|
2016-05-10 12:07:06 +00:00
|
|
|
|
2016-05-02 08:35:26 +00:00
|
|
|
// TODO(4280): For now we disable switching to baseline code in the presence
|
2016-08-23 07:40:51 +00:00
|
|
|
// of interpreter activations of the given function. The reasons is that the
|
|
|
|
// underlying bytecode is cleared below. The expensive check for activations
|
|
|
|
// only needs to be done when the given function has bytecode, otherwise we
|
|
|
|
// can be sure there are no activations. Note that this only applies in case
|
|
|
|
// the --ignition-preserve-bytecode flag is not passed.
|
|
|
|
if (!FLAG_ignition_preserve_bytecode && shared->HasBytecodeArray()) {
|
2016-05-19 12:27:18 +00:00
|
|
|
InterpreterActivationsFinder activations_finder(*shared);
|
|
|
|
if (HasInterpreterActivations(info->isolate(), &activations_finder)) {
|
|
|
|
return false;
|
|
|
|
}
|
2016-05-02 08:35:26 +00:00
|
|
|
}
|
2016-05-10 12:07:06 +00:00
|
|
|
|
2016-03-18 13:56:57 +00:00
|
|
|
// If the current code has reloc info for serialization, also include
|
|
|
|
// reloc info for serialization for the new code, so that deopt support
|
|
|
|
// can be added without losing IC state.
|
|
|
|
if (shared->code()->kind() == Code::FUNCTION &&
|
|
|
|
shared->code()->has_reloc_info_for_serialization()) {
|
|
|
|
unoptimized.PrepareForSerializing();
|
|
|
|
}
|
2016-05-27 08:09:12 +00:00
|
|
|
EnsureFeedbackMetadata(&unoptimized);
|
2016-03-18 13:56:57 +00:00
|
|
|
if (!FullCodeGenerator::MakeCode(&unoptimized)) return false;
|
|
|
|
|
2016-05-02 08:35:26 +00:00
|
|
|
// TODO(4280): For now we play it safe and remove the bytecode array when we
|
|
|
|
// switch to baseline code. We might consider keeping around the bytecode so
|
2016-08-23 07:40:51 +00:00
|
|
|
// that it can be used as the "source of truth" eventually. Note that this
|
|
|
|
// only applies in case the --ignition-preserve-bytecode flag is not passed.
|
|
|
|
if (!FLAG_ignition_preserve_bytecode && shared->HasBytecodeArray()) {
|
|
|
|
shared->ClearBytecodeArray();
|
2016-08-17 17:22:09 +00:00
|
|
|
}
|
2016-03-18 13:56:57 +00:00
|
|
|
|
|
|
|
// The scope info might not have been set if a lazily compiled
|
|
|
|
// function is inlined before being called for the first time.
|
|
|
|
if (shared->scope_info() == ScopeInfo::Empty(info->isolate())) {
|
2016-04-20 08:50:24 +00:00
|
|
|
InstallSharedScopeInfo(info, shared);
|
2016-03-18 13:56:57 +00:00
|
|
|
}
|
|
|
|
|
2016-05-02 08:35:26 +00:00
|
|
|
// Install compilation result on the shared function info
|
|
|
|
shared->EnableDeoptimizationSupport(*unoptimized.code());
|
|
|
|
|
2016-03-18 13:56:57 +00:00
|
|
|
// The existing unoptimized code was replaced with the new one.
|
2016-06-15 13:22:39 +00:00
|
|
|
RecordFunctionCompilation(CodeEventListener::LAZY_COMPILE_TAG,
|
|
|
|
&unoptimized);
|
2016-03-18 13:56:57 +00:00
|
|
|
}
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
2016-07-25 09:42:48 +00:00
|
|
|
// static
|
|
|
|
Compiler::CompilationTier Compiler::NextCompilationTier(JSFunction* function) {
|
|
|
|
Handle<SharedFunctionInfo> shared(function->shared(), function->GetIsolate());
|
|
|
|
if (shared->code()->is_interpreter_trampoline_builtin()) {
|
|
|
|
if (FLAG_turbo_from_bytecode && UseTurboFan(shared)) {
|
|
|
|
return OPTIMIZED;
|
|
|
|
} else {
|
|
|
|
return BASELINE;
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
return OPTIMIZED;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2014-04-17 05:41:58 +00:00
|
|
|
MaybeHandle<JSFunction> Compiler::GetFunctionFromEval(
|
2014-10-28 10:00:37 +00:00
|
|
|
Handle<String> source, Handle<SharedFunctionInfo> outer_info,
|
2015-02-04 09:34:05 +00:00
|
|
|
Handle<Context> context, LanguageMode language_mode,
|
2016-04-18 13:20:45 +00:00
|
|
|
ParseRestriction restriction, int eval_scope_position, int eval_position,
|
|
|
|
int line_offset, int column_offset, Handle<Object> script_name,
|
|
|
|
ScriptOriginOptions options) {
|
2013-12-23 14:30:35 +00:00
|
|
|
Isolate* isolate = source->GetIsolate();
|
|
|
|
int source_length = source->length();
|
|
|
|
isolate->counters()->total_eval_size()->Increment(source_length);
|
|
|
|
isolate->counters()->total_compile_size()->Increment(source_length);
|
|
|
|
|
|
|
|
CompilationCache* compilation_cache = isolate->compilation_cache();
|
2014-04-08 12:33:08 +00:00
|
|
|
MaybeHandle<SharedFunctionInfo> maybe_shared_info =
|
2015-02-04 09:34:05 +00:00
|
|
|
compilation_cache->LookupEval(source, outer_info, context, language_mode,
|
2016-04-18 13:20:45 +00:00
|
|
|
eval_scope_position);
|
2014-04-08 12:33:08 +00:00
|
|
|
Handle<SharedFunctionInfo> shared_info;
|
2013-12-23 14:30:35 +00:00
|
|
|
|
2015-07-27 13:15:06 +00:00
|
|
|
Handle<Script> script;
|
2014-04-08 12:33:08 +00:00
|
|
|
if (!maybe_shared_info.ToHandle(&shared_info)) {
|
2015-07-27 13:15:06 +00:00
|
|
|
script = isolate->factory()->NewScript(source);
|
2015-07-16 12:08:01 +00:00
|
|
|
if (!script_name.is_null()) {
|
|
|
|
script->set_name(*script_name);
|
2015-09-28 13:10:13 +00:00
|
|
|
script->set_line_offset(line_offset);
|
|
|
|
script->set_column_offset(column_offset);
|
2015-07-16 12:08:01 +00:00
|
|
|
}
|
|
|
|
script->set_origin_options(options);
|
2016-04-18 13:20:45 +00:00
|
|
|
script->set_compilation_type(Script::COMPILATION_TYPE_EVAL);
|
2016-04-19 16:16:33 +00:00
|
|
|
Script::SetEvalOrigin(script, outer_info, eval_position);
|
2016-04-18 13:20:45 +00:00
|
|
|
|
2016-04-01 10:00:30 +00:00
|
|
|
Zone zone(isolate->allocator());
|
2015-03-24 14:17:05 +00:00
|
|
|
ParseInfo parse_info(&zone, script);
|
2016-04-08 12:31:38 +00:00
|
|
|
CompilationInfo info(&parse_info, Handle<JSFunction>::null());
|
2015-03-24 14:17:05 +00:00
|
|
|
parse_info.set_eval();
|
|
|
|
if (context->IsNativeContext()) parse_info.set_global();
|
|
|
|
parse_info.set_language_mode(language_mode);
|
|
|
|
parse_info.set_parse_restriction(restriction);
|
|
|
|
parse_info.set_context(context);
|
2013-12-23 14:30:35 +00:00
|
|
|
|
|
|
|
shared_info = CompileToplevel(&info);
|
|
|
|
|
|
|
|
if (shared_info.is_null()) {
|
2014-04-17 05:41:58 +00:00
|
|
|
return MaybeHandle<JSFunction>();
|
2013-12-23 14:30:35 +00:00
|
|
|
} else {
|
2014-03-11 14:41:22 +00:00
|
|
|
// If caller is strict mode, the result must be in strict mode as well.
|
2015-02-04 09:34:05 +00:00
|
|
|
DCHECK(is_sloppy(language_mode) ||
|
|
|
|
is_strict(shared_info->language_mode()));
|
2015-06-19 18:55:47 +00:00
|
|
|
compilation_cache->PutEval(source, outer_info, context, shared_info,
|
2016-04-18 13:20:45 +00:00
|
|
|
eval_scope_position);
|
2013-12-23 14:30:35 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2015-07-27 13:15:06 +00:00
|
|
|
Handle<JSFunction> result =
|
|
|
|
isolate->factory()->NewFunctionFromSharedFunctionInfo(
|
|
|
|
shared_info, context, NOT_TENURED);
|
|
|
|
|
|
|
|
// OnAfterCompile has to be called after we create the JSFunction, which we
|
|
|
|
// may require to recompile the eval for debugging, if we find a function
|
|
|
|
// that contains break points in the eval script.
|
|
|
|
isolate->debug()->OnAfterCompile(script);
|
|
|
|
|
|
|
|
return result;
|
2013-12-23 14:30:35 +00:00
|
|
|
}
|
|
|
|
|
2016-07-20 13:29:04 +00:00
|
|
|
namespace {
|
|
|
|
|
|
|
|
bool CodeGenerationFromStringsAllowed(Isolate* isolate,
|
|
|
|
Handle<Context> context) {
|
|
|
|
DCHECK(context->allow_code_gen_from_strings()->IsFalse(isolate));
|
|
|
|
// Check with callback if set.
|
|
|
|
AllowCodeGenerationFromStringsCallback callback =
|
|
|
|
isolate->allow_code_gen_callback();
|
|
|
|
if (callback == NULL) {
|
|
|
|
// No callback set and code generation disallowed.
|
|
|
|
return false;
|
|
|
|
} else {
|
|
|
|
// Callback set. Let it decide if code generation is allowed.
|
|
|
|
VMState<EXTERNAL> state(isolate);
|
|
|
|
return callback(v8::Utils::ToLocal(context));
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
} // namespace
|
|
|
|
|
|
|
|
MaybeHandle<JSFunction> Compiler::GetFunctionFromString(
|
|
|
|
Handle<Context> context, Handle<String> source,
|
|
|
|
ParseRestriction restriction) {
|
|
|
|
Isolate* const isolate = context->GetIsolate();
|
|
|
|
Handle<Context> native_context(context->native_context(), isolate);
|
|
|
|
|
|
|
|
// Check if native context allows code generation from
|
|
|
|
// strings. Throw an exception if it doesn't.
|
|
|
|
if (native_context->allow_code_gen_from_strings()->IsFalse(isolate) &&
|
|
|
|
!CodeGenerationFromStringsAllowed(isolate, native_context)) {
|
|
|
|
Handle<Object> error_message =
|
|
|
|
native_context->ErrorMessageForCodeGenerationFromStrings();
|
|
|
|
THROW_NEW_ERROR(isolate, NewEvalError(MessageTemplate::kCodeGenFromStrings,
|
|
|
|
error_message),
|
|
|
|
JSFunction);
|
|
|
|
}
|
|
|
|
|
|
|
|
// Compile source string in the native context.
|
|
|
|
int eval_scope_position = 0;
|
|
|
|
int eval_position = kNoSourcePosition;
|
|
|
|
Handle<SharedFunctionInfo> outer_info(native_context->closure()->shared());
|
|
|
|
return Compiler::GetFunctionFromEval(source, outer_info, native_context,
|
|
|
|
SLOPPY, restriction, eval_scope_position,
|
|
|
|
eval_position);
|
|
|
|
}
|
|
|
|
|
2016-03-08 12:07:27 +00:00
|
|
|
Handle<SharedFunctionInfo> Compiler::GetSharedFunctionInfoForScript(
|
Change ScriptCompiler::CompileOptions to allow for two 'cache' modes
(parser or code) and to be explicit about cache consumption or production
(rather than making presence of cached_data imply one or the other.)
Also add a --cache flag to d8, to allow testing the functionality.
-----------------------------
API change
Reason: Currently, V8 supports a 'parser cache' for repeatedly executing the same script. We'd like to add a 2nd mode that would cache code, and would like to let the embedder decide which mode they chose (if any).
Note: Previously, the 'use cached data' property was implied by the presence of the cached data itself. (That is, kNoCompileOptions and source->cached_data != NULL.) That is no longer sufficient, since the presence of data is no longer sufficient to determine /which kind/ of data is present.
Changes from old behaviour:
- If you previously didn't use caching, nothing changes.
Example:
v8::CompileUnbound(isolate, source, kNoCompileOptions);
- If you previously used caching, it worked like this:
- 1st run:
v8::CompileUnbound(isolate, source, kProduceToCache);
Then, source->cached_data would contain the
data-to-be cached. This remains the same, except you
need to tell V8 which type of data you want.
v8::CompileUnbound(isolate, source, kProduceParserCache);
- 2nd run:
v8::CompileUnbound(isolate, source, kNoCompileOptions);
with source->cached_data set to the data you received in
the first run. This will now ignore the cached data, and
you need to explicitly tell V8 to use it:
v8::CompileUnbound(isolate, source, kConsumeParserCache);
-----------------------------
BUG=
R=marja@chromium.org, yangguo@chromium.org
Review URL: https://codereview.chromium.org/389573006
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22431 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2014-07-16 12:18:33 +00:00
|
|
|
Handle<String> source, Handle<Object> script_name, int line_offset,
|
2015-05-19 03:11:33 +00:00
|
|
|
int column_offset, ScriptOriginOptions resource_options,
|
|
|
|
Handle<Object> source_map_url, Handle<Context> context,
|
|
|
|
v8::Extension* extension, ScriptData** cached_data,
|
2015-02-06 17:52:20 +00:00
|
|
|
ScriptCompiler::CompileOptions compile_options, NativesFlag natives,
|
|
|
|
bool is_module) {
|
2014-12-11 12:58:36 +00:00
|
|
|
Isolate* isolate = source->GetIsolate();
|
Change ScriptCompiler::CompileOptions to allow for two 'cache' modes
(parser or code) and to be explicit about cache consumption or production
(rather than making presence of cached_data imply one or the other.)
Also add a --cache flag to d8, to allow testing the functionality.
-----------------------------
API change
Reason: Currently, V8 supports a 'parser cache' for repeatedly executing the same script. We'd like to add a 2nd mode that would cache code, and would like to let the embedder decide which mode they chose (if any).
Note: Previously, the 'use cached data' property was implied by the presence of the cached data itself. (That is, kNoCompileOptions and source->cached_data != NULL.) That is no longer sufficient, since the presence of data is no longer sufficient to determine /which kind/ of data is present.
Changes from old behaviour:
- If you previously didn't use caching, nothing changes.
Example:
v8::CompileUnbound(isolate, source, kNoCompileOptions);
- If you previously used caching, it worked like this:
- 1st run:
v8::CompileUnbound(isolate, source, kProduceToCache);
Then, source->cached_data would contain the
data-to-be cached. This remains the same, except you
need to tell V8 which type of data you want.
v8::CompileUnbound(isolate, source, kProduceParserCache);
- 2nd run:
v8::CompileUnbound(isolate, source, kNoCompileOptions);
with source->cached_data set to the data you received in
the first run. This will now ignore the cached data, and
you need to explicitly tell V8 to use it:
v8::CompileUnbound(isolate, source, kConsumeParserCache);
-----------------------------
BUG=
R=marja@chromium.org, yangguo@chromium.org
Review URL: https://codereview.chromium.org/389573006
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22431 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2014-07-16 12:18:33 +00:00
|
|
|
if (compile_options == ScriptCompiler::kNoCompileOptions) {
|
2014-03-19 13:24:13 +00:00
|
|
|
cached_data = NULL;
|
Change ScriptCompiler::CompileOptions to allow for two 'cache' modes
(parser or code) and to be explicit about cache consumption or production
(rather than making presence of cached_data imply one or the other.)
Also add a --cache flag to d8, to allow testing the functionality.
-----------------------------
API change
Reason: Currently, V8 supports a 'parser cache' for repeatedly executing the same script. We'd like to add a 2nd mode that would cache code, and would like to let the embedder decide which mode they chose (if any).
Note: Previously, the 'use cached data' property was implied by the presence of the cached data itself. (That is, kNoCompileOptions and source->cached_data != NULL.) That is no longer sufficient, since the presence of data is no longer sufficient to determine /which kind/ of data is present.
Changes from old behaviour:
- If you previously didn't use caching, nothing changes.
Example:
v8::CompileUnbound(isolate, source, kNoCompileOptions);
- If you previously used caching, it worked like this:
- 1st run:
v8::CompileUnbound(isolate, source, kProduceToCache);
Then, source->cached_data would contain the
data-to-be cached. This remains the same, except you
need to tell V8 which type of data you want.
v8::CompileUnbound(isolate, source, kProduceParserCache);
- 2nd run:
v8::CompileUnbound(isolate, source, kNoCompileOptions);
with source->cached_data set to the data you received in
the first run. This will now ignore the cached data, and
you need to explicitly tell V8 to use it:
v8::CompileUnbound(isolate, source, kConsumeParserCache);
-----------------------------
BUG=
R=marja@chromium.org, yangguo@chromium.org
Review URL: https://codereview.chromium.org/389573006
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22431 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2014-07-16 12:18:33 +00:00
|
|
|
} else if (compile_options == ScriptCompiler::kProduceParserCache ||
|
|
|
|
compile_options == ScriptCompiler::kProduceCodeCache) {
|
2014-08-04 11:34:54 +00:00
|
|
|
DCHECK(cached_data && !*cached_data);
|
|
|
|
DCHECK(extension == NULL);
|
2014-12-11 12:58:36 +00:00
|
|
|
DCHECK(!isolate->debug()->is_loaded());
|
2014-03-19 13:24:13 +00:00
|
|
|
} else {
|
2014-08-04 11:34:54 +00:00
|
|
|
DCHECK(compile_options == ScriptCompiler::kConsumeParserCache ||
|
Change ScriptCompiler::CompileOptions to allow for two 'cache' modes
(parser or code) and to be explicit about cache consumption or production
(rather than making presence of cached_data imply one or the other.)
Also add a --cache flag to d8, to allow testing the functionality.
-----------------------------
API change
Reason: Currently, V8 supports a 'parser cache' for repeatedly executing the same script. We'd like to add a 2nd mode that would cache code, and would like to let the embedder decide which mode they chose (if any).
Note: Previously, the 'use cached data' property was implied by the presence of the cached data itself. (That is, kNoCompileOptions and source->cached_data != NULL.) That is no longer sufficient, since the presence of data is no longer sufficient to determine /which kind/ of data is present.
Changes from old behaviour:
- If you previously didn't use caching, nothing changes.
Example:
v8::CompileUnbound(isolate, source, kNoCompileOptions);
- If you previously used caching, it worked like this:
- 1st run:
v8::CompileUnbound(isolate, source, kProduceToCache);
Then, source->cached_data would contain the
data-to-be cached. This remains the same, except you
need to tell V8 which type of data you want.
v8::CompileUnbound(isolate, source, kProduceParserCache);
- 2nd run:
v8::CompileUnbound(isolate, source, kNoCompileOptions);
with source->cached_data set to the data you received in
the first run. This will now ignore the cached data, and
you need to explicitly tell V8 to use it:
v8::CompileUnbound(isolate, source, kConsumeParserCache);
-----------------------------
BUG=
R=marja@chromium.org, yangguo@chromium.org
Review URL: https://codereview.chromium.org/389573006
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22431 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2014-07-16 12:18:33 +00:00
|
|
|
compile_options == ScriptCompiler::kConsumeCodeCache);
|
2014-08-04 11:34:54 +00:00
|
|
|
DCHECK(cached_data && *cached_data);
|
|
|
|
DCHECK(extension == NULL);
|
2014-03-19 13:24:13 +00:00
|
|
|
}
|
2013-12-23 14:30:35 +00:00
|
|
|
int source_length = source->length();
|
|
|
|
isolate->counters()->total_load_size()->Increment(source_length);
|
|
|
|
isolate->counters()->total_compile_size()->Increment(source_length);
|
|
|
|
|
2016-03-10 12:43:51 +00:00
|
|
|
LanguageMode language_mode = construct_language_mode(FLAG_use_strict);
|
2013-12-23 14:30:35 +00:00
|
|
|
CompilationCache* compilation_cache = isolate->compilation_cache();
|
|
|
|
|
|
|
|
// Do a lookup in the compilation cache but not for extensions.
|
2014-04-08 12:33:08 +00:00
|
|
|
MaybeHandle<SharedFunctionInfo> maybe_result;
|
2010-03-23 06:04:44 +00:00
|
|
|
Handle<SharedFunctionInfo> result;
|
2008-09-11 10:51:52 +00:00
|
|
|
if (extension == NULL) {
|
2015-03-16 13:19:10 +00:00
|
|
|
// First check per-isolate compilation cache.
|
2015-01-26 10:56:53 +00:00
|
|
|
maybe_result = compilation_cache->LookupScript(
|
2015-05-19 03:11:33 +00:00
|
|
|
source, script_name, line_offset, column_offset, resource_options,
|
|
|
|
context, language_mode);
|
2015-01-26 10:56:53 +00:00
|
|
|
if (maybe_result.is_null() && FLAG_serialize_toplevel &&
|
2014-07-23 08:27:04 +00:00
|
|
|
compile_options == ScriptCompiler::kConsumeCodeCache &&
|
|
|
|
!isolate->debug()->is_loaded()) {
|
2015-03-16 13:19:10 +00:00
|
|
|
// Then check cached code provided by embedder.
|
2014-09-22 17:19:19 +00:00
|
|
|
HistogramTimerScope timer(isolate->counters()->compile_deserialize());
|
2016-06-17 12:03:58 +00:00
|
|
|
RuntimeCallTimerScope runtimeTimer(isolate,
|
|
|
|
&RuntimeCallStats::CompileDeserialize);
|
2016-09-01 20:07:34 +00:00
|
|
|
TRACE_EVENT0(TRACE_DISABLED_BY_DEFAULT("v8.compile"),
|
|
|
|
"V8.CompileDeserialize");
|
2014-10-15 14:04:53 +00:00
|
|
|
Handle<SharedFunctionInfo> result;
|
|
|
|
if (CodeSerializer::Deserialize(isolate, *cached_data, source)
|
|
|
|
.ToHandle(&result)) {
|
2015-03-16 13:19:10 +00:00
|
|
|
// Promote to per-isolate compilation cache.
|
|
|
|
compilation_cache->PutScript(source, context, language_mode, result);
|
2014-10-15 14:04:53 +00:00
|
|
|
return result;
|
|
|
|
}
|
|
|
|
// Deserializer failed. Fall through to compile.
|
2014-07-08 09:04:08 +00:00
|
|
|
}
|
2008-07-03 15:10:15 +00:00
|
|
|
}
|
|
|
|
|
2014-07-22 10:35:38 +00:00
|
|
|
base::ElapsedTimer timer;
|
|
|
|
if (FLAG_profile_deserialization && FLAG_serialize_toplevel &&
|
|
|
|
compile_options == ScriptCompiler::kProduceCodeCache) {
|
|
|
|
timer.Start();
|
|
|
|
}
|
|
|
|
|
2016-04-18 08:12:58 +00:00
|
|
|
if (!maybe_result.ToHandle(&result) ||
|
|
|
|
(FLAG_serialize_toplevel &&
|
|
|
|
compile_options == ScriptCompiler::kProduceCodeCache)) {
|
|
|
|
// No cache entry found, or embedder wants a code cache. Compile the script.
|
2008-09-11 10:51:52 +00:00
|
|
|
|
|
|
|
// Create a script object describing the script to be compiled.
|
2013-06-04 10:30:05 +00:00
|
|
|
Handle<Script> script = isolate->factory()->NewScript(source);
|
2010-03-17 08:14:59 +00:00
|
|
|
if (natives == NATIVES_CODE) {
|
2015-09-28 13:10:13 +00:00
|
|
|
script->set_type(Script::TYPE_NATIVE);
|
2015-08-21 09:12:57 +00:00
|
|
|
script->set_hide_source(true);
|
2016-02-05 12:33:20 +00:00
|
|
|
} else if (natives == EXTENSION_CODE) {
|
|
|
|
script->set_type(Script::TYPE_EXTENSION);
|
|
|
|
script->set_hide_source(true);
|
2010-03-17 08:14:59 +00:00
|
|
|
}
|
2008-09-11 10:51:52 +00:00
|
|
|
if (!script_name.is_null()) {
|
|
|
|
script->set_name(*script_name);
|
2015-09-28 13:10:13 +00:00
|
|
|
script->set_line_offset(line_offset);
|
|
|
|
script->set_column_offset(column_offset);
|
2008-09-11 10:51:52 +00:00
|
|
|
}
|
2015-05-19 03:11:33 +00:00
|
|
|
script->set_origin_options(resource_options);
|
2015-03-05 13:03:42 +00:00
|
|
|
if (!source_map_url.is_null()) {
|
|
|
|
script->set_source_mapping_url(*source_map_url);
|
|
|
|
}
|
2008-09-11 10:51:52 +00:00
|
|
|
|
|
|
|
// Compile the function and add it to the cache.
|
2016-04-01 10:00:30 +00:00
|
|
|
Zone zone(isolate->allocator());
|
2015-03-24 14:17:05 +00:00
|
|
|
ParseInfo parse_info(&zone, script);
|
2016-04-08 12:31:38 +00:00
|
|
|
CompilationInfo info(&parse_info, Handle<JSFunction>::null());
|
2016-03-15 00:43:31 +00:00
|
|
|
if (is_module) {
|
2015-03-24 14:17:05 +00:00
|
|
|
parse_info.set_module();
|
2015-02-06 17:52:20 +00:00
|
|
|
} else {
|
2015-03-24 14:17:05 +00:00
|
|
|
parse_info.set_global();
|
2015-02-06 17:52:20 +00:00
|
|
|
}
|
2015-03-09 14:51:13 +00:00
|
|
|
if (compile_options != ScriptCompiler::kNoCompileOptions) {
|
2015-03-24 14:17:05 +00:00
|
|
|
parse_info.set_cached_data(cached_data);
|
2015-03-09 14:51:13 +00:00
|
|
|
}
|
2015-03-24 14:17:05 +00:00
|
|
|
parse_info.set_compile_options(compile_options);
|
|
|
|
parse_info.set_extension(extension);
|
|
|
|
parse_info.set_context(context);
|
Change ScriptCompiler::CompileOptions to allow for two 'cache' modes
(parser or code) and to be explicit about cache consumption or production
(rather than making presence of cached_data imply one or the other.)
Also add a --cache flag to d8, to allow testing the functionality.
-----------------------------
API change
Reason: Currently, V8 supports a 'parser cache' for repeatedly executing the same script. We'd like to add a 2nd mode that would cache code, and would like to let the embedder decide which mode they chose (if any).
Note: Previously, the 'use cached data' property was implied by the presence of the cached data itself. (That is, kNoCompileOptions and source->cached_data != NULL.) That is no longer sufficient, since the presence of data is no longer sufficient to determine /which kind/ of data is present.
Changes from old behaviour:
- If you previously didn't use caching, nothing changes.
Example:
v8::CompileUnbound(isolate, source, kNoCompileOptions);
- If you previously used caching, it worked like this:
- 1st run:
v8::CompileUnbound(isolate, source, kProduceToCache);
Then, source->cached_data would contain the
data-to-be cached. This remains the same, except you
need to tell V8 which type of data you want.
v8::CompileUnbound(isolate, source, kProduceParserCache);
- 2nd run:
v8::CompileUnbound(isolate, source, kNoCompileOptions);
with source->cached_data set to the data you received in
the first run. This will now ignore the cached data, and
you need to explicitly tell V8 to use it:
v8::CompileUnbound(isolate, source, kConsumeParserCache);
-----------------------------
BUG=
R=marja@chromium.org, yangguo@chromium.org
Review URL: https://codereview.chromium.org/389573006
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22431 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2014-07-16 12:18:33 +00:00
|
|
|
if (FLAG_serialize_toplevel &&
|
|
|
|
compile_options == ScriptCompiler::kProduceCodeCache) {
|
2014-07-08 14:13:50 +00:00
|
|
|
info.PrepareForSerializing();
|
|
|
|
}
|
2015-02-10 19:12:51 +00:00
|
|
|
|
2015-03-24 14:17:05 +00:00
|
|
|
parse_info.set_language_mode(
|
2016-05-04 09:27:26 +00:00
|
|
|
static_cast<LanguageMode>(parse_info.language_mode() | language_mode));
|
2013-12-23 14:30:35 +00:00
|
|
|
result = CompileToplevel(&info);
|
2015-06-19 18:55:47 +00:00
|
|
|
if (extension == NULL && !result.is_null()) {
|
2015-02-12 16:29:42 +00:00
|
|
|
compilation_cache->PutScript(source, context, language_mode, result);
|
2014-11-12 13:12:17 +00:00
|
|
|
if (FLAG_serialize_toplevel &&
|
Change ScriptCompiler::CompileOptions to allow for two 'cache' modes
(parser or code) and to be explicit about cache consumption or production
(rather than making presence of cached_data imply one or the other.)
Also add a --cache flag to d8, to allow testing the functionality.
-----------------------------
API change
Reason: Currently, V8 supports a 'parser cache' for repeatedly executing the same script. We'd like to add a 2nd mode that would cache code, and would like to let the embedder decide which mode they chose (if any).
Note: Previously, the 'use cached data' property was implied by the presence of the cached data itself. (That is, kNoCompileOptions and source->cached_data != NULL.) That is no longer sufficient, since the presence of data is no longer sufficient to determine /which kind/ of data is present.
Changes from old behaviour:
- If you previously didn't use caching, nothing changes.
Example:
v8::CompileUnbound(isolate, source, kNoCompileOptions);
- If you previously used caching, it worked like this:
- 1st run:
v8::CompileUnbound(isolate, source, kProduceToCache);
Then, source->cached_data would contain the
data-to-be cached. This remains the same, except you
need to tell V8 which type of data you want.
v8::CompileUnbound(isolate, source, kProduceParserCache);
- 2nd run:
v8::CompileUnbound(isolate, source, kNoCompileOptions);
with source->cached_data set to the data you received in
the first run. This will now ignore the cached data, and
you need to explicitly tell V8 to use it:
v8::CompileUnbound(isolate, source, kConsumeParserCache);
-----------------------------
BUG=
R=marja@chromium.org, yangguo@chromium.org
Review URL: https://codereview.chromium.org/389573006
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22431 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2014-07-16 12:18:33 +00:00
|
|
|
compile_options == ScriptCompiler::kProduceCodeCache) {
|
2014-09-22 17:19:19 +00:00
|
|
|
HistogramTimerScope histogram_timer(
|
|
|
|
isolate->counters()->compile_serialize());
|
2016-06-17 12:03:58 +00:00
|
|
|
RuntimeCallTimerScope runtimeTimer(isolate,
|
|
|
|
&RuntimeCallStats::CompileSerialize);
|
2016-09-01 20:07:34 +00:00
|
|
|
TRACE_EVENT0(TRACE_DISABLED_BY_DEFAULT("v8.compile"),
|
|
|
|
"V8.CompileSerialize");
|
2014-07-15 10:17:22 +00:00
|
|
|
*cached_data = CodeSerializer::Serialize(isolate, result, source);
|
2014-07-22 10:35:38 +00:00
|
|
|
if (FLAG_profile_deserialization) {
|
2014-10-23 08:43:17 +00:00
|
|
|
PrintF("[Compiling and serializing took %0.3f ms]\n",
|
|
|
|
timer.Elapsed().InMillisecondsF());
|
2014-07-22 10:35:38 +00:00
|
|
|
}
|
2014-07-08 09:04:08 +00:00
|
|
|
}
|
2008-09-11 10:51:52 +00:00
|
|
|
}
|
Change ScriptCompiler::CompileOptions to allow for two 'cache' modes
(parser or code) and to be explicit about cache consumption or production
(rather than making presence of cached_data imply one or the other.)
Also add a --cache flag to d8, to allow testing the functionality.
-----------------------------
API change
Reason: Currently, V8 supports a 'parser cache' for repeatedly executing the same script. We'd like to add a 2nd mode that would cache code, and would like to let the embedder decide which mode they chose (if any).
Note: Previously, the 'use cached data' property was implied by the presence of the cached data itself. (That is, kNoCompileOptions and source->cached_data != NULL.) That is no longer sufficient, since the presence of data is no longer sufficient to determine /which kind/ of data is present.
Changes from old behaviour:
- If you previously didn't use caching, nothing changes.
Example:
v8::CompileUnbound(isolate, source, kNoCompileOptions);
- If you previously used caching, it worked like this:
- 1st run:
v8::CompileUnbound(isolate, source, kProduceToCache);
Then, source->cached_data would contain the
data-to-be cached. This remains the same, except you
need to tell V8 which type of data you want.
v8::CompileUnbound(isolate, source, kProduceParserCache);
- 2nd run:
v8::CompileUnbound(isolate, source, kNoCompileOptions);
with source->cached_data set to the data you received in
the first run. This will now ignore the cached data, and
you need to explicitly tell V8 to use it:
v8::CompileUnbound(isolate, source, kConsumeParserCache);
-----------------------------
BUG=
R=marja@chromium.org, yangguo@chromium.org
Review URL: https://codereview.chromium.org/389573006
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22431 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2014-07-16 12:18:33 +00:00
|
|
|
|
2015-07-27 13:15:06 +00:00
|
|
|
if (result.is_null()) {
|
|
|
|
isolate->ReportPendingMessages();
|
|
|
|
} else {
|
|
|
|
isolate->debug()->OnAfterCompile(script);
|
|
|
|
}
|
2013-12-23 14:30:35 +00:00
|
|
|
} else if (result->ic_age() != isolate->heap()->global_ic_age()) {
|
2014-07-08 09:04:08 +00:00
|
|
|
result->ResetForNewContext(isolate->heap()->global_ic_age());
|
2008-07-03 15:10:15 +00:00
|
|
|
}
|
|
|
|
return result;
|
|
|
|
}
|
|
|
|
|
2016-03-08 12:07:27 +00:00
|
|
|
Handle<SharedFunctionInfo> Compiler::GetSharedFunctionInfoForStreamedScript(
|
2015-03-09 14:51:13 +00:00
|
|
|
Handle<Script> script, ParseInfo* parse_info, int source_length) {
|
|
|
|
Isolate* isolate = script->GetIsolate();
|
|
|
|
// TODO(titzer): increment the counters in caller.
|
2014-09-12 09:12:08 +00:00
|
|
|
isolate->counters()->total_load_size()->Increment(source_length);
|
|
|
|
isolate->counters()->total_compile_size()->Increment(source_length);
|
|
|
|
|
2016-03-10 12:43:51 +00:00
|
|
|
LanguageMode language_mode = construct_language_mode(FLAG_use_strict);
|
2015-03-09 14:51:13 +00:00
|
|
|
parse_info->set_language_mode(
|
|
|
|
static_cast<LanguageMode>(parse_info->language_mode() | language_mode));
|
2015-02-10 19:12:51 +00:00
|
|
|
|
2016-04-08 12:31:38 +00:00
|
|
|
CompilationInfo compile_info(parse_info, Handle<JSFunction>::null());
|
2015-07-22 07:37:21 +00:00
|
|
|
|
2015-07-27 14:19:53 +00:00
|
|
|
// The source was parsed lazily, so compiling for debugging is not possible.
|
|
|
|
DCHECK(!compile_info.is_debug());
|
2015-07-22 07:37:21 +00:00
|
|
|
|
2015-07-27 13:15:06 +00:00
|
|
|
Handle<SharedFunctionInfo> result = CompileToplevel(&compile_info);
|
|
|
|
if (!result.is_null()) isolate->debug()->OnAfterCompile(script);
|
|
|
|
return result;
|
2014-09-12 09:12:08 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
|
2015-06-25 12:19:55 +00:00
|
|
|
Handle<SharedFunctionInfo> Compiler::GetSharedFunctionInfo(
|
2014-07-23 09:35:06 +00:00
|
|
|
FunctionLiteral* literal, Handle<Script> script,
|
|
|
|
CompilationInfo* outer_info) {
|
2013-12-23 14:30:35 +00:00
|
|
|
// Precondition: code has been parsed and scopes have been analyzed.
|
2015-06-26 13:53:26 +00:00
|
|
|
Isolate* isolate = outer_info->isolate();
|
2015-06-25 12:19:55 +00:00
|
|
|
MaybeHandle<SharedFunctionInfo> maybe_existing;
|
2016-04-14 10:27:40 +00:00
|
|
|
|
|
|
|
// Find any previously allocated shared function info for the given literal.
|
2016-04-19 09:32:29 +00:00
|
|
|
if (outer_info->shared_info()->never_compiled()) {
|
2015-06-25 12:19:55 +00:00
|
|
|
// On the first compile, there are no existing shared function info for
|
2015-06-26 13:53:26 +00:00
|
|
|
// inner functions yet, so do not try to find them. All bets are off for
|
|
|
|
// live edit though.
|
2016-03-17 13:15:56 +00:00
|
|
|
SLOW_DCHECK(script->FindSharedFunctionInfo(literal).is_null() ||
|
|
|
|
isolate->debug()->live_edit_enabled());
|
2015-06-25 12:19:55 +00:00
|
|
|
} else {
|
|
|
|
maybe_existing = script->FindSharedFunctionInfo(literal);
|
|
|
|
}
|
2016-04-14 10:27:40 +00:00
|
|
|
|
2016-08-18 10:42:30 +00:00
|
|
|
// We found an existing shared function info. If it has any sort of code
|
|
|
|
// attached, don't worry about compiling and simply return it. Otherwise,
|
|
|
|
// continue to decide whether to eagerly compile.
|
|
|
|
// Note that we also carry on if we are compiling eager to obtain code for
|
|
|
|
// debugging, unless we already have code with debug break slots.
|
2015-06-25 12:19:55 +00:00
|
|
|
Handle<SharedFunctionInfo> existing;
|
2016-08-18 10:42:30 +00:00
|
|
|
if (maybe_existing.ToHandle(&existing)) {
|
2016-05-12 11:24:07 +00:00
|
|
|
DCHECK(!existing->is_toplevel());
|
2016-08-18 10:42:30 +00:00
|
|
|
if (existing->HasBaselineCode() || existing->HasBytecodeArray()) {
|
|
|
|
if (!outer_info->is_debug() || existing->HasDebugCode()) {
|
|
|
|
return existing;
|
|
|
|
}
|
2015-07-20 14:53:28 +00:00
|
|
|
}
|
2015-06-25 12:19:55 +00:00
|
|
|
}
|
|
|
|
|
2016-03-18 10:46:40 +00:00
|
|
|
// Allocate a shared function info object.
|
|
|
|
Handle<SharedFunctionInfo> result;
|
|
|
|
if (!maybe_existing.ToHandle(&result)) {
|
|
|
|
result = NewSharedFunctionInfoForLiteral(isolate, literal, script);
|
|
|
|
result->set_is_toplevel(false);
|
2016-04-14 10:27:40 +00:00
|
|
|
|
|
|
|
// If the outer function has been compiled before, we cannot be sure that
|
|
|
|
// shared function info for this function literal has been created for the
|
|
|
|
// first time. It may have already been compiled previously.
|
2016-04-19 09:32:29 +00:00
|
|
|
result->set_never_compiled(outer_info->shared_info()->never_compiled());
|
2016-03-18 10:46:40 +00:00
|
|
|
}
|
|
|
|
|
2016-04-01 10:00:30 +00:00
|
|
|
Zone zone(isolate->allocator());
|
2015-03-24 14:17:05 +00:00
|
|
|
ParseInfo parse_info(&zone, script);
|
2016-04-08 12:31:38 +00:00
|
|
|
CompilationInfo info(&parse_info, Handle<JSFunction>::null());
|
2015-03-24 14:17:05 +00:00
|
|
|
parse_info.set_literal(literal);
|
2016-04-05 14:07:15 +00:00
|
|
|
parse_info.set_shared_info(result);
|
2015-03-24 14:17:05 +00:00
|
|
|
parse_info.set_language_mode(literal->scope()->language_mode());
|
2014-07-23 09:35:06 +00:00
|
|
|
if (outer_info->will_serialize()) info.PrepareForSerializing();
|
2015-07-20 14:53:28 +00:00
|
|
|
if (outer_info->is_debug()) info.MarkAsDebug();
|
2009-08-13 10:25:35 +00:00
|
|
|
|
2013-12-23 14:30:35 +00:00
|
|
|
// Determine if the function can be lazily compiled. This is necessary to
|
|
|
|
// allow some of our builtin JS files to be lazily compiled. These
|
|
|
|
// builtins cannot be handled lazily by the parser, since we have to know
|
|
|
|
// if a function uses the special natives syntax, which is something the
|
|
|
|
// parser records.
|
|
|
|
// If the debugger requests compilation for break points, we cannot be
|
|
|
|
// aggressive about lazy compilation, because it might trigger compilation
|
|
|
|
// of functions without an outer context when setting a breakpoint through
|
|
|
|
// Debug::FindSharedFunctionInfoInScript.
|
2016-05-12 11:25:15 +00:00
|
|
|
bool allow_lazy = literal->AllowsLazyCompilation() && !info.is_debug();
|
2015-06-25 12:19:55 +00:00
|
|
|
bool lazy = FLAG_lazy && allow_lazy && !literal->should_eager_compile();
|
|
|
|
|
2016-03-14 18:55:41 +00:00
|
|
|
// Consider compiling eagerly when targeting the code cache.
|
|
|
|
lazy &= !(FLAG_serialize_eager && info.will_serialize());
|
|
|
|
|
2016-03-24 18:37:56 +00:00
|
|
|
// Consider compiling eagerly when compiling bytecode for Ignition.
|
|
|
|
lazy &=
|
|
|
|
!(FLAG_ignition && FLAG_ignition_eager && !isolate->serializer_enabled());
|
|
|
|
|
2013-12-23 14:30:35 +00:00
|
|
|
// Generate code
|
2016-02-15 17:29:22 +00:00
|
|
|
TimerEventScope<TimerEventCompileCode> timer(isolate);
|
2016-06-17 12:03:58 +00:00
|
|
|
RuntimeCallTimerScope runtimeTimer(isolate, &RuntimeCallStats::CompileCode);
|
2016-09-01 20:07:34 +00:00
|
|
|
TRACE_EVENT0(TRACE_DISABLED_BY_DEFAULT("v8.compile"), "V8.CompileCode");
|
2016-08-11 14:00:36 +00:00
|
|
|
|
2015-06-25 12:19:55 +00:00
|
|
|
if (lazy) {
|
2016-03-18 10:46:40 +00:00
|
|
|
info.SetCode(isolate->builtins()->CompileLazy());
|
2016-04-20 14:11:53 +00:00
|
|
|
} else if (Renumber(info.parse_info()) && GenerateUnoptimizedCode(&info)) {
|
2015-12-14 20:57:38 +00:00
|
|
|
// Code generation will ensure that the feedback vector is present and
|
2014-11-14 08:21:13 +00:00
|
|
|
// appropriately sized.
|
2014-08-04 11:34:54 +00:00
|
|
|
DCHECK(!info.code().is_null());
|
2015-05-06 10:21:20 +00:00
|
|
|
if (literal->should_eager_compile() &&
|
|
|
|
literal->should_be_used_once_hint()) {
|
|
|
|
info.code()->MarkToBeExecutedOnce(isolate);
|
|
|
|
}
|
2016-04-20 08:50:24 +00:00
|
|
|
// Update the shared function info with the scope info.
|
|
|
|
InstallSharedScopeInfo(&info, result);
|
2016-03-18 10:46:40 +00:00
|
|
|
// Install compilation result on the shared function info.
|
2016-04-20 08:50:24 +00:00
|
|
|
InstallSharedCompilationResult(&info, result);
|
2012-03-26 13:08:08 +00:00
|
|
|
} else {
|
2013-12-23 14:30:35 +00:00
|
|
|
return Handle<SharedFunctionInfo>::null();
|
2008-09-11 10:51:52 +00:00
|
|
|
}
|
2008-12-05 08:35:52 +00:00
|
|
|
|
2015-06-25 12:19:55 +00:00
|
|
|
if (maybe_existing.is_null()) {
|
2016-06-15 13:22:39 +00:00
|
|
|
RecordFunctionCompilation(CodeEventListener::FUNCTION_TAG, &info);
|
2016-03-18 10:46:40 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
return result;
|
2008-07-03 15:10:15 +00:00
|
|
|
}
|
|
|
|
|
2016-01-26 11:30:27 +00:00
|
|
|
Handle<SharedFunctionInfo> Compiler::GetSharedFunctionInfoForNative(
|
|
|
|
v8::Extension* extension, Handle<String> name) {
|
|
|
|
Isolate* isolate = name->GetIsolate();
|
|
|
|
v8::Isolate* v8_isolate = reinterpret_cast<v8::Isolate*>(isolate);
|
|
|
|
|
|
|
|
// Compute the function template for the native function.
|
|
|
|
v8::Local<v8::FunctionTemplate> fun_template =
|
|
|
|
extension->GetNativeFunctionTemplate(v8_isolate,
|
|
|
|
v8::Utils::ToLocal(name));
|
|
|
|
DCHECK(!fun_template.IsEmpty());
|
|
|
|
|
|
|
|
// Instantiate the function and create a shared function info from it.
|
|
|
|
Handle<JSFunction> fun = Handle<JSFunction>::cast(Utils::OpenHandle(
|
|
|
|
*fun_template->GetFunction(v8_isolate->GetCurrentContext())
|
|
|
|
.ToLocalChecked()));
|
|
|
|
Handle<Code> code = Handle<Code>(fun->shared()->code());
|
|
|
|
Handle<Code> construct_stub = Handle<Code>(fun->shared()->construct_stub());
|
|
|
|
Handle<SharedFunctionInfo> shared = isolate->factory()->NewSharedFunctionInfo(
|
2016-05-24 15:11:55 +00:00
|
|
|
name, fun->shared()->num_literals(), FunctionKind::kNormalFunction, code,
|
2016-03-18 10:46:40 +00:00
|
|
|
Handle<ScopeInfo>(fun->shared()->scope_info()));
|
2016-07-11 10:03:02 +00:00
|
|
|
shared->SetConstructStub(*construct_stub);
|
2016-05-27 08:09:12 +00:00
|
|
|
shared->set_feedback_metadata(fun->shared()->feedback_metadata());
|
2016-01-26 11:30:27 +00:00
|
|
|
|
|
|
|
// Copy the function data to the shared function info.
|
|
|
|
shared->set_function_data(fun->shared()->function_data());
|
|
|
|
int parameters = fun->shared()->internal_formal_parameter_count();
|
|
|
|
shared->set_internal_formal_parameter_count(parameters);
|
|
|
|
|
|
|
|
return shared;
|
|
|
|
}
|
2008-07-03 15:10:15 +00:00
|
|
|
|
2016-03-08 09:01:27 +00:00
|
|
|
MaybeHandle<Code> Compiler::GetOptimizedCodeForOSR(Handle<JSFunction> function,
|
|
|
|
BailoutId osr_ast_id,
|
|
|
|
JavaScriptFrame* osr_frame) {
|
2016-03-04 16:10:55 +00:00
|
|
|
DCHECK(!osr_ast_id.IsNone());
|
2016-03-08 09:01:27 +00:00
|
|
|
DCHECK_NOT_NULL(osr_frame);
|
|
|
|
return GetOptimizedCode(function, NOT_CONCURRENT, osr_ast_id, osr_frame);
|
2012-07-19 18:58:23 +00:00
|
|
|
}
|
|
|
|
|
2016-08-25 10:24:53 +00:00
|
|
|
CompilationJob* Compiler::PrepareUnoptimizedCompilationJob(
|
|
|
|
CompilationInfo* info) {
|
|
|
|
VMState<COMPILER> state(info->isolate());
|
|
|
|
std::unique_ptr<CompilationJob> job(GetUnoptimizedCompilationJob(info));
|
|
|
|
if (job->PrepareJob() != CompilationJob::SUCCEEDED) {
|
|
|
|
return nullptr;
|
|
|
|
}
|
|
|
|
return job.release();
|
|
|
|
}
|
|
|
|
|
|
|
|
bool Compiler::FinalizeCompilationJob(CompilationJob* raw_job) {
|
2016-05-02 14:44:29 +00:00
|
|
|
// Take ownership of compilation job. Deleting job also tears down the zone.
|
2016-07-25 11:12:42 +00:00
|
|
|
std::unique_ptr<CompilationJob> job(raw_job);
|
2013-12-23 14:30:35 +00:00
|
|
|
|
2016-08-25 10:24:53 +00:00
|
|
|
VMState<COMPILER> state(job->info()->isolate());
|
|
|
|
if (job->info()->IsOptimizing()) {
|
|
|
|
return FinalizeOptimizedCompilationJob(job.get()) ==
|
|
|
|
CompilationJob::SUCCEEDED;
|
|
|
|
} else {
|
|
|
|
return FinalizeUnoptimizedCompilationJob(job.get()) ==
|
|
|
|
CompilationJob::SUCCEEDED;
|
2013-12-23 14:30:35 +00:00
|
|
|
}
|
2009-11-04 17:59:24 +00:00
|
|
|
}
|
|
|
|
|
2016-03-07 16:26:08 +00:00
|
|
|
void Compiler::PostInstantiation(Handle<JSFunction> function,
|
|
|
|
PretenureFlag pretenure) {
|
|
|
|
Handle<SharedFunctionInfo> shared(function->shared());
|
|
|
|
|
|
|
|
if (FLAG_always_opt && shared->allows_lazy_compilation()) {
|
|
|
|
function->MarkForOptimization();
|
|
|
|
}
|
|
|
|
|
|
|
|
CodeAndLiterals cached = shared->SearchOptimizedCodeMap(
|
|
|
|
function->context()->native_context(), BailoutId::None());
|
|
|
|
if (cached.code != nullptr) {
|
|
|
|
// Caching of optimized code enabled and optimized code found.
|
|
|
|
DCHECK(!cached.code->marked_for_deoptimization());
|
|
|
|
DCHECK(function->shared()->is_compiled());
|
|
|
|
function->ReplaceCode(cached.code);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (cached.literals != nullptr) {
|
2016-05-27 08:09:12 +00:00
|
|
|
DCHECK(shared->is_compiled());
|
2016-03-07 16:26:08 +00:00
|
|
|
function->set_literals(cached.literals);
|
2016-05-27 08:09:12 +00:00
|
|
|
} else if (shared->is_compiled()) {
|
|
|
|
// TODO(mvstanton): pass pretenure flag to EnsureLiterals.
|
|
|
|
JSFunction::EnsureLiterals(function);
|
2016-03-07 16:26:08 +00:00
|
|
|
}
|
|
|
|
}
|
2009-11-04 17:59:24 +00:00
|
|
|
|
2015-06-01 22:46:54 +00:00
|
|
|
} // namespace internal
|
|
|
|
} // namespace v8
|