Reland "[KeyedLoadIC] Support Smi "handlers" for element loads"

src/code-stub-assembler.h

 // Copyright 2016 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.
 
 #ifndef V8_CODE_STUB_ASSEMBLER_H_
 #define V8_CODE_STUB_ASSEMBLER_H_
 
 #include <functional>
 
 #include "src/compiler/code-assembler.h"
@@ skipping 492 matching lines @@
   compiler::Node* TryMonomorphicCase(const LoadICParameters* p,
                                      compiler::Node* receiver_map,
                                      Label* if_handler, Variable* var_handler,
                                      Label* if_miss);
   void HandlePolymorphicCase(const LoadICParameters* p,
                              compiler::Node* receiver_map,
                              compiler::Node* feedback, Label* if_handler,
                              Variable* var_handler, Label* if_miss,
                              int unroll_count);
 
-  void HandleLoadICHandlerCase(const LoadICParameters* p,
-                               compiler::Node* handler, Label* miss);
-
   compiler::Node* StubCachePrimaryOffset(compiler::Node* name,
                                          compiler::Node* map);
 
   compiler::Node* StubCacheSecondaryOffset(compiler::Node* name,
                                            compiler::Node* seed);
 
   // This enum is used here as a replacement for StubCache::Table to avoid
   // including stub cache header.
   enum StubCacheTable : int;
 
@@ skipping 27 matching lines @@
       compiler::Node* value);
 
   compiler::Node* GetFixedAarrayAllocationSize(compiler::Node* element_count,
                                                ElementsKind kind,
                                                ParameterMode mode) {
     return ElementOffsetFromIndex(element_count, kind, mode,
                                   FixedArray::kHeaderSize);
   }
 
  private:
+  enum ElementSupport { kOnlyProperties, kSupportElements };
+
+  void HandleLoadICHandlerCase(
+      const LoadICParameters* p, compiler::Node* handler, Label* miss,
+      ElementSupport support_elements = kOnlyProperties);
+  compiler::Node* TryToIntptr(compiler::Node* key, Label* miss);
+  void EmitBoundsCheck(compiler::Node* object, compiler::Node* elements,
+                       compiler::Node* intptr_key, compiler::Node* is_jsarray,
+                       Label* miss);
+  void EmitElementLoad(compiler::Node* object, compiler::Node* elements,
+                       compiler::Node* elements_kind, compiler::Node* key,
+                       Label* if_hole, Label* rebox_double,
+                       Variable* var_double_value, Label* miss);
+
   compiler::Node* ElementOffsetFromIndex(compiler::Node* index,
                                          ElementsKind kind, ParameterMode mode,
                                          int base_size = 0);
 
   compiler::Node* AllocateRawAligned(compiler::Node* size_in_bytes,
                                      AllocationFlags flags,
                                      compiler::Node* top_address,
                                      compiler::Node* limit_address);
   compiler::Node* AllocateRawUnaligned(compiler::Node* size_in_bytes,
                                        AllocationFlags flags,
                                        compiler::Node* top_adddress,
                                        compiler::Node* limit_address);
 
   static const int kElementLoopUnrollThreshold = 8;
 };
 
 }  // namespace internal
 }  // namespace v8
 #endif  // V8_CODE_STUB_ASSEMBLER_H_