[compiler] Let CompileForLiveEdit use common pipeline.

src/compiler.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/compiler.h"
 
 #include <algorithm>
 
 #include "src/ast/ast-numbering.h"
 #include "src/ast/prettyprinter.h"
@@ skipping 1160 matching lines @@
     return false;
   }
 
   // Check postconditions on success.
   DCHECK(!isolate->has_pending_exception());
   DCHECK(shared->is_compiled());
   DCHECK(shared->HasDebugCode());
   return true;
 }
 
-void Compiler::CompileForLiveEdit(Handle<Script> script) {
+bool Compiler::CompileForLiveEdit(Handle<Script> script) {
   Isolate* isolate = script->GetIsolate();
   DCHECK(AllowCompilation::IsAllowed(isolate));
 
   // Start a compilation.
-  // TODO(635): support extensions.
   Zone zone(isolate->allocator());
   ParseInfo parse_info(&zone, script);
   CompilationInfo info(&parse_info, Handle<JSFunction>::null());
-  PostponeInterruptsScope postpone(isolate);
-  VMState<COMPILER> state(isolate);
+  parse_info.set_global();
+  info.MarkAsDebug();
+  // TODO(635): support extensions.
+  if (CompileToplevel(&info).is_null()) {
+    return false;
+  }
 
-  info.MarkAsDebug();
-  info.parse_info()->set_global();
-  if (!Parser::ParseStatic(info.parse_info())) return;
-
-  LiveEditFunctionTracker tracker(isolate, parse_info.literal());
-  if (!CompileBaselineCode(&info)) return;
-  tracker.RecordRootFunctionInfo(info.code());
+  // Check postconditions on success.
+  DCHECK(!isolate->has_pending_exception());
+  return true;
 }
 
 // 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());
   DCHECK_NOT_NULL(info->scope());
   Handle<SharedFunctionInfo> shared = info->shared_info();
   if (!shared->has_deoptimization_support()) {
     // TODO(titzer): just reuse the ParseInfo for the unoptimized compile.
@@ skipping 494 matching lines @@
     MaybeHandle<Code> code;
     if (cached.code != nullptr) code = handle(cached.code);
     Handle<Context> native_context(function->context()->native_context());
     SharedFunctionInfo::AddToOptimizedCodeMap(shared, native_context, code,
                                               literals, BailoutId::None());
   }
 }
 
 }  // namespace internal
 }  // namespace v8