Teach TurboFan to call vector-based ICs.

src/compiler/ast-graph-builder.h

Index: src/compiler/ast-graph-builder.h
diff --git a/src/compiler/ast-graph-builder.h b/src/compiler/ast-graph-builder.h
index 967b24bda13d32f33101068e2a2429fdd775b89c..3e4bb8cd11798cf091d6b813b44b1c1295592502 100644
--- a/src/compiler/ast-graph-builder.h
+++ b/src/compiler/ast-graph-builder.h
@@ -82,7 +82,8 @@ class AstGraphBuilder : public StructuredGraphBuilder, public AstVisitor {
                                 BailoutId bailout_id);
   Node* BuildVariableDelete(Variable* var, BailoutId bailout_id,
                             OutputFrameStateCombine state_combine);
-  Node* BuildVariableLoad(Variable* var, BailoutId bailout_id,
+  Node* BuildVariableLoad(Variable* proxy, BailoutId bailout_id,
+                          const VectorSlotPair& feedback,
                           ContextualMode mode = CONTEXTUAL);
 
   // Builders for accessing the function context.
@@ -143,6 +144,9 @@ class AstGraphBuilder : public StructuredGraphBuilder, public AstVisitor {
   // Current scope during visitation.
   inline Scope* current_scope() const;
 
+  // Named and keyed loads require a VectorSlotPair for successful lowering.
+  VectorSlotPair CreateVectorSlotPair(int slot) const;
+
   // Process arguments to a call by popping {arity} elements off the operand
   // stack and build a call node using the given call operator.
   Node* ProcessArguments(const Operator* op, int arity);