[turbofan] Add BoundsCheckMode to ElementAccess.

src/compiler/js-typed-lowering.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/access-builder.h"
 #include "src/compiler/graph-inl.h"
 #include "src/compiler/js-builtin-reducer.h"
 #include "src/compiler/js-typed-lowering.h"
 #include "src/compiler/node-aux-data-inl.h"
 #include "src/compiler/node-properties-inl.h"
@@ skipping 579 matching lines @@
         NodeProperties::GetEffectInput(node));
     if (IsExternalArrayElementsKind(elements_kind)) {
       elements = graph()->NewNode(
           simplified()->LoadField(AccessBuilder::ForExternalArrayPointer()),
           elements, NodeProperties::GetEffectInput(node));
       element_access = AccessBuilder::ForTypedArrayElement(type, true);
     } else {
       DCHECK(IsFixedTypedArrayElementsKind(elements_kind));
       element_access = AccessBuilder::ForTypedArrayElement(type, false);
     }
-
-    Node* check = graph()->NewNode(machine()->Uint32LessThan(), key,
-                                   jsgraph()->Uint32Constant(length));
-    Node* branch = graph()->NewNode(common()->Branch(), check,
-                                    NodeProperties::GetControlInput(node));
-
-    Node* if_true = graph()->NewNode(common()->IfTrue(), branch);
-
     Node* store =
         graph()->NewNode(simplified()->StoreElement(element_access), elements,
                          key, jsgraph()->Uint32Constant(length), value,
-                         NodeProperties::GetEffectInput(node), if_true);
-
-    Node* if_false = graph()->NewNode(common()->IfFalse(), branch);
-
-    Node* merge = graph()->NewNode(common()->Merge(2), if_true, if_false);
-    Node* phi = graph()->NewNode(common()->EffectPhi(2), store,
-                                 NodeProperties::GetEffectInput(node), merge);
-
-    return ReplaceWith(phi);
+                         NodeProperties::GetEffectInput(node),
+                         NodeProperties::GetControlInput(node));
+    return ReplaceEagerly(node, store);
   }
   return NoChange();
 }
 
 
 static Reduction ReplaceWithReduction(Node* node, Reduction reduction) {
   if (reduction.Changed()) {
     NodeProperties::ReplaceWithValue(node, reduction.replacement());
     return reduction;
   }
@@ skipping 83 matching lines @@
       return JSBuiltinReducer(jsgraph()).Reduce(node);
     default:
       break;
   }
   return NoChange();
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8