MIPS: HInnerAllocatedObject instruction allows hydrogen code to carve up allocated regions into sub…

src/mips/lithium-mips.cc

Index: src/mips/lithium-mips.cc
diff --git a/src/mips/lithium-mips.cc b/src/mips/lithium-mips.cc
index b233d519e50edec8c24366cc6b253c443589c928..4f40f0ee708cfa9a469a5849481e020f9796246f 100644
--- a/src/mips/lithium-mips.cc
+++ b/src/mips/lithium-mips.cc
@@ -290,6 +290,13 @@ void LTypeofIsAndBranch::PrintDataTo(StringStream* stream) {
 }
 
 
+void LInnerAllocatedObject::PrintDataTo(StringStream* stream) {
+  stream->Add(" = ");
+  base_object()->PrintTo(stream);
+  stream->Add(" + %d", offset());
+}
+
+
 void LCallConstantFunction::PrintDataTo(StringStream* stream) {
   stream->Add("#%d / ", arity());
 }
@@ -1016,6 +1023,15 @@ LInstruction* LChunkBuilder::DoPushArgument(HPushArgument* instr) {
 }
 
 
+LInstruction* LChunkBuilder::DoInnerAllocatedObject(
+    HInnerAllocatedObject* inner_object) {
+  LOperand* base_object = UseRegisterAtStart(inner_object->base_object());
+  LInnerAllocatedObject* result =
+    new(zone()) LInnerAllocatedObject(base_object);
+  return DefineAsRegister(result);
+}
+
+
 LInstruction* LChunkBuilder::DoThisFunction(HThisFunction* instr) {
   return instr->HasNoUses()
       ? NULL