Add HasProperty code stub that tries simple lookups or jumps to runtime otherwise.

src/full-codegen/s390/full-codegen-s390.cc

Index: src/full-codegen/s390/full-codegen-s390.cc
diff --git a/src/full-codegen/s390/full-codegen-s390.cc b/src/full-codegen/s390/full-codegen-s390.cc
index 34de5c680a19bd922ef88f7373dcf9e82b949b8c..21d76d2327a684c7629bb4d1f1782db974d8f5fa 100644
--- a/src/full-codegen/s390/full-codegen-s390.cc
+++ b/src/full-codegen/s390/full-codegen-s390.cc
@@ -454,6 +454,10 @@ void FullCodeGenerator::EmitReturnSequence() {
   }
 }
 
+void FullCodeGenerator::RestoreContext() {

[Toon Verwaest, 2016/04/20 10:00:04]

What about using this helper for the other lines that do it, as useful
side-cleanup?

[Igor Sheludko, 2016/04/20 13:14:56]

Done.

+  __ LoadP(cp, MemOperand(fp, StandardFrameConstants::kContextOffset));
+}
+
 void FullCodeGenerator::StackValueContext::Plug(Variable* var) const {
   DCHECK(var->IsStackAllocated() || var->IsContextSlot());
   codegen()->GetVar(result_register(), var);
@@ -3623,7 +3627,7 @@ void FullCodeGenerator::VisitCompareOperation(CompareOperation* expr) {
   switch (op) {
     case Token::IN:
       VisitForStackValue(expr->right());
-      CallRuntimeWithOperands(Runtime::kHasProperty);
+      EmitInExpression();
       PrepareForBailoutBeforeSplit(expr, false, NULL, NULL);
       __ CompareRoot(r2, Heap::kTrueValueRootIndex);
       Split(eq, if_true, if_false, fall_through);