Removed most of the bogus CompilationInfo constructor calls.

src/compiler/js-context-specialization.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/js-context-specialization.h"
 
 #include "src/compiler.h"
 #include "src/compiler/common-operator.h"
 #include "src/compiler/js-operator.h"
 #include "src/compiler/node-matchers.h"
 #include "src/compiler/node-properties.h"
 
 namespace v8 {
 namespace internal {
 namespace compiler {
 
 Reduction JSContextSpecializer::Reduce(Node* node) {
   if (node == context_) {
-    Node* constant = jsgraph_->Constant(info_->context());
+    Node* constant = jsgraph_->Constant(ctx_);
     NodeProperties::ReplaceWithValue(node, constant);
     return Replace(constant);
   }
   if (node->opcode() == IrOpcode::kJSLoadContext) {
     return ReduceJSLoadContext(node);
   }
   if (node->opcode() == IrOpcode::kJSStoreContext) {
     return ReduceJSStoreContext(node);
   }
   return NoChange();
@@ skipping 19 matching lines @@
 
   // If the access itself is mutable, only fold-in the parent.
   if (!access.immutable()) {
     // The access does not have to look up a parent, nothing to fold.
     if (access.depth() == 0) {
       return NoChange();
     }
     const Operator* op = jsgraph_->javascript()->LoadContext(
         0, access.index(), access.immutable());
     node->set_op(op);
-    Handle<Object> context_handle = Handle<Object>(context, info_->isolate());
+    Handle<Object> context_handle =
+        Handle<Object>(context, jsgraph_->isolate());
     node->ReplaceInput(0, jsgraph_->Constant(context_handle));
     return Changed(node);
   }
   Handle<Object> value = Handle<Object>(
-      context->get(static_cast<int>(access.index())), info_->isolate());
+      context->get(static_cast<int>(access.index())), jsgraph_->isolate());
 
   // Even though the context slot is immutable, the context might have escaped
   // before the function to which it belongs has initialized the slot.
   // We must be conservative and check if the value in the slot is currently the
   // hole or undefined. If it is neither of these, then it must be initialized.
   if (value->IsUndefined() || value->IsTheHole()) {
     return NoChange();
   }
 
   // Success. The context load can be replaced with the constant.
@@ skipping 22 matching lines @@
   }
 
   // Find the right parent context.
   Context* context = *m.Value().handle();
   for (size_t i = access.depth(); i > 0; --i) {
     context = context->previous();
   }
 
   const Operator* op = jsgraph_->javascript()->StoreContext(0, access.index());
   node->set_op(op);
-  Handle<Object> new_context_handle = Handle<Object>(context, info_->isolate());
+  Handle<Object> new_context_handle =
+      Handle<Object>(context, jsgraph_->isolate());
   node->ReplaceInput(0, jsgraph_->Constant(new_context_handle));
 
   return Changed(node);
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8