Fix OSR to ignore phis without merge index in loop entry.

src/hydrogen-osr.cc

Index: src/hydrogen-osr.cc
diff --git a/src/hydrogen-osr.cc b/src/hydrogen-osr.cc
index 73fa40a72cff1f58c0f320a749aa2ac42583dc7a..bf6233bb41d91cda9f3f8cf38629b3c78aa1c4a7 100644
--- a/src/hydrogen-osr.cc
+++ b/src/hydrogen-osr.cc
@@ -117,8 +117,9 @@ void HOsrBuilder::FinishOsrValues() {
   const ZoneList<HPhi*>* phis = osr_loop_entry_->phis();
   for (int j = 0; j < phis->length(); j++) {
     HPhi* phi = phis->at(j);
-    ASSERT(phi->HasMergedIndex());
-    osr_values_->at(phi->merged_index())->set_incoming_value(phi);
+    if (phi->HasMergedIndex()) {
+      osr_values_->at(phi->merged_index())->set_incoming_value(phi);
+    }
   }
 }