Turn ElementsTransitionAndStore stub into a HydrogenCodeStub.

src/arm/code-stubs-arm.cc

Index: src/arm/code-stubs-arm.cc
diff --git a/src/arm/code-stubs-arm.cc b/src/arm/code-stubs-arm.cc
index ff754ec095cdd389a8a12882b4b4029b6984a4da..e5e74797ef5d9bcb45d04d3dde9835b252285c01 100644
--- a/src/arm/code-stubs-arm.cc
+++ b/src/arm/code-stubs-arm.cc
@@ -258,6 +258,26 @@ void StoreGlobalStub::InitializeInterfaceDescriptor(
 }
 
 
+void ElementsTransitionAndStoreStub::InitializeInterfaceDescriptor(
+    Isolate* isolate,
+    CodeStubInterfaceDescriptor* descriptor) {
+  static Register registers[] = { r0, r3, r1, r2 };
+  descriptor->register_param_count_ = 4;
+  descriptor->register_params_ = registers;
+  switch (strict_mode_) {
+    case kNonStrictMode:
+      descriptor->deoptimization_handler_ = Runtime::FunctionForId(

[danno, 2013/07/10 09:52:37]

Yikes. In general, you should access members of the Stub during descriptor
initialization, this seems fragile. I would much prefer having one descriptor
per stub class and one stub class per descriptor .

[Benedikt Meurer, 2013/07/10 12:23:09]

Done.

+          Runtime::kElementsTransitionAndStoreNonStrict)->entry;
+      break;
+
+    case kStrictMode:
+      descriptor->deoptimization_handler_ = Runtime::FunctionForId(
+          Runtime::kElementsTransitionAndStoreStrict)->entry;
+      break;
+  }
+}
+
+
 #define __ ACCESS_MASM(masm)