Crankshaft support for IN.

src/arm/lithium-codegen-arm.cc

Index: src/arm/lithium-codegen-arm.cc
diff --git a/src/arm/lithium-codegen-arm.cc b/src/arm/lithium-codegen-arm.cc
index 74fecc29df17614a9f6b1378ff980b2ca5059146..32411e474a1c8c4a95dc334455229b8148833cdd 100644
--- a/src/arm/lithium-codegen-arm.cc
+++ b/src/arm/lithium-codegen-arm.cc
@@ -4257,6 +4257,22 @@ void LCodeGen::DoDeleteProperty(LDeleteProperty* instr) {
 }
 
 
+void LCodeGen::DoIn(LIn* instr) {
+  Register obj = ToRegister(instr->object());
+  Register key = ToRegister(instr->key());
+  __ Push(key, obj);
+  ASSERT(instr->HasPointerMap() && instr->HasDeoptimizationEnvironment());
+  LPointerMap* pointers = instr->pointer_map();
+  LEnvironment* env = instr->deoptimization_environment();
+  RecordPosition(pointers->position());
+  RegisterEnvironmentForDeoptimization(env);
+  SafepointGenerator safepoint_generator(this,
+                                         pointers,
+                                         env->deoptimization_index());
+  __ InvokeBuiltin(Builtins::IN, CALL_JS, &safepoint_generator);
+}
+
+
 void LCodeGen::DoStackCheck(LStackCheck* instr) {
   // Perform stack overflow check.
   Label ok;
@@ -4286,6 +4302,8 @@ void LCodeGen::DoOsrEntry(LOsrEntry* instr) {
 }
 
 
+
+
 #undef __
 
 } }  // namespace v8::internal