HSubAllocatedObject instruction allows hydrogen code to carve up

src/ia32/lithium-codegen-ia32.cc

Index: src/ia32/lithium-codegen-ia32.cc
diff --git a/src/ia32/lithium-codegen-ia32.cc b/src/ia32/lithium-codegen-ia32.cc
index 4ae660380ab620e33ce1f20b572227e0ba705ca5..0f5de03e8194f8419f7c5321c96a12a40611224c 100644
--- a/src/ia32/lithium-codegen-ia32.cc
+++ b/src/ia32/lithium-codegen-ia32.cc
@@ -4195,6 +4195,13 @@ void LCodeGen::DoCallRuntime(LCallRuntime* instr) {
 }
 
 
+void LCodeGen::DoInnerAllocatedObject(LInnerAllocatedObject* instr) {
+  Register result = ToRegister(instr->result());
+  Register base = ToRegister(instr->base_object());
+  __ lea(result, Operand(base, instr->offset()));
+}
+
+
 void LCodeGen::DoStoreNamedField(LStoreNamedField* instr) {
   Register object = ToRegister(instr->object());
   Register value = ToRegister(instr->value());