Revert 15635: Turn ElementsTransitionAndStore stub into a HydrogenCodeStub

src/code-stubs.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 800 matching lines @@
       || Contains(ToBooleanStub::HEAP_NUMBER);
 }
 
 
 bool ToBooleanStub::Types::CanBeUndetectable() const {
   return Contains(ToBooleanStub::SPEC_OBJECT)
       || Contains(ToBooleanStub::STRING);
 }
 
 
+void ElementsTransitionAndStoreStub::Generate(MacroAssembler* masm) {
+  Label fail;
+  AllocationSiteMode mode = AllocationSite::GetMode(from_, to_);
+  ASSERT(!IsFastHoleyElementsKind(from_) || IsFastHoleyElementsKind(to_));
+  if (!FLAG_trace_elements_transitions) {
+    if (IsFastSmiOrObjectElementsKind(to_)) {
+      if (IsFastSmiOrObjectElementsKind(from_)) {
+        ElementsTransitionGenerator::
+            GenerateMapChangeElementsTransition(masm, mode, &fail);
+      } else if (IsFastDoubleElementsKind(from_)) {
+        ASSERT(!IsFastSmiElementsKind(to_));
+        ElementsTransitionGenerator::GenerateDoubleToObject(masm, mode, &fail);
+      } else {
+        UNREACHABLE();
+      }
+      KeyedStoreStubCompiler::GenerateStoreFastElement(masm,
+                                                       is_jsarray_,
+                                                       to_,
+                                                       store_mode_);
+    } else if (IsFastSmiElementsKind(from_) &&
+               IsFastDoubleElementsKind(to_)) {
+      ElementsTransitionGenerator::GenerateSmiToDouble(masm, mode, &fail);
+      KeyedStoreStubCompiler::GenerateStoreFastDoubleElement(masm,
+                                                             is_jsarray_,
+                                                             store_mode_);
+    } else if (IsFastDoubleElementsKind(from_)) {
+      ASSERT(to_ == FAST_HOLEY_DOUBLE_ELEMENTS);
+      ElementsTransitionGenerator::
+          GenerateMapChangeElementsTransition(masm, mode, &fail);
+    } else {
+      UNREACHABLE();
+    }
+  }
+  masm->bind(&fail);
+  KeyedStoreIC::GenerateRuntimeSetProperty(masm, strict_mode_);
+}
+
+
 void StubFailureTrampolineStub::GenerateAheadOfTime(Isolate* isolate) {
   StubFailureTrampolineStub stub1(NOT_JS_FUNCTION_STUB_MODE);
   StubFailureTrampolineStub stub2(JS_FUNCTION_STUB_MODE);
   stub1.GetCode(isolate)->set_is_pregenerated(true);
   stub2.GetCode(isolate)->set_is_pregenerated(true);
 }
 
 
 void ProfileEntryHookStub::EntryHookTrampoline(intptr_t function,
                                                intptr_t stack_pointer) {
@@ skipping 53 matching lines @@
   InstallDescriptor(isolate, &stub3);
 }
 
 InternalArrayConstructorStub::InternalArrayConstructorStub(
     Isolate* isolate) {
   InternalArrayConstructorStubBase::GenerateStubsAheadOfTime(isolate);
 }
 
 
 } }  // namespace v8::internal