Perform receiver patching for sloppy mode in high-level IR.

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 518f23f46ad102faa0baae5c62c605a139a3a4fb..d076b5a110b52cded26a59663110468085f33dda 100644
--- a/src/compiler/ast-graph-builder.h
+++ b/src/compiler/ast-graph-builder.h
@@ -72,6 +72,9 @@ class AstGraphBuilder : public StructuredGraphBuilder, public AstVisitor {
   // other dependencies tracked by the environment might be mutated though.
   //
 
+  // Builder to create a receiver check for sloppy mode.
+  Node* BuildPatchReceiverToGlobalProxy(Node* receiver);
+
   // Builder to create a local function context.
   Node* BuildLocalFunctionContext(Node* context, Node* closure);
 
@@ -92,6 +95,7 @@ class AstGraphBuilder : public StructuredGraphBuilder, public AstVisitor {
   // Builders for accessing the function context.
   Node* BuildLoadBuiltinsObject();
   Node* BuildLoadGlobalObject();
+  Node* BuildLoadGlobalProxy();
   Node* BuildLoadClosure();
   Node* BuildLoadObjectField(Node* object, int offset);