Switch full-codegen from StackHandlers to handler table.

src/compiler/ast-graph-builder.cc

 // Copyright 2014 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/ast-graph-builder.h"
 
 #include "src/compiler.h"
 #include "src/compiler/ast-loop-assignment-analyzer.h"
 #include "src/compiler/control-builders.h"
 #include "src/compiler/linkage.h"
@@ skipping 1316 matching lines @@
 
 
 void AstGraphBuilder::VisitTryCatchStatement(TryCatchStatement* stmt) {
   TryCatchBuilder try_control(this);
 
   // Evaluate the try-block inside a control scope. This simulates a handler
   // that is intercepting 'throw' control commands.
   try_control.BeginTry();
   {
     ControlScopeForCatch scope(this, &try_control);
+    STATIC_ASSERT(TryBlockConstant::kElementCount == 1);
+    environment()->Push(current_context());
     Visit(stmt->try_block());
+    environment()->Pop();
   }
   try_control.EndTry();
 
   // Create a catch scope that binds the exception.
   Node* exception = try_control.GetExceptionNode();
   Unique<String> name = MakeUnique(stmt->variable()->name());
   const Operator* op = javascript()->CreateCatchContext(name);
   Node* context = NewNode(op, exception, GetFunctionClosure());
   PrepareFrameState(context, BailoutId::None());
   {
@@ skipping 26 matching lines @@
   // 3. By exiting the try-block with a thrown exception.
   Node* fallthrough_result = jsgraph()->TheHoleConstant();
   ControlScope::DeferredCommands* commands =
       new (zone()) ControlScope::DeferredCommands(this);
 
   // Evaluate the try-block inside a control scope. This simulates a handler
   // that is intercepting all control commands.
   try_control.BeginTry();
   {
     ControlScopeForFinally scope(this, commands, &try_control);
+    STATIC_ASSERT(TryBlockConstant::kElementCount == 1);
+    environment()->Push(current_context());
     Visit(stmt->try_block());
+    environment()->Pop();
   }
   try_control.EndTry(commands->GetFallThroughToken(), fallthrough_result);
 
   // The result value semantics depend on how the block was entered:
   //  - ReturnStatement: It represents the return value being returned.
   //  - ThrowStatement: It represents the exception being thrown.
   //  - BreakStatement/ContinueStatement: Filled with the hole.
   //  - Falling through into finally-block: Filled with the hole.
   Node* result = try_control.GetResultValueNode();
   Node* token = try_control.GetDispatchTokenNode();
@@ skipping 2091 matching lines @@
     // Phi does not exist yet, introduce one.
     value = NewPhi(inputs, value, control);
     value->ReplaceInput(inputs - 1, other);
   }
   return value;
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8