Merged r13420 into 3.14 branch.

src/mips/lithium-codegen-mips.cc

Index: src/mips/lithium-codegen-mips.cc
diff --git a/src/mips/lithium-codegen-mips.cc b/src/mips/lithium-codegen-mips.cc
index 4c2182bdb004ebf57b1ac3fff3f0cdfbdf43b59b..21fd2ce48175bc2023dcb2ac639f29d7fd68a1b7 100644
--- a/src/mips/lithium-codegen-mips.cc
+++ b/src/mips/lithium-codegen-mips.cc
@@ -3938,7 +3938,7 @@ void LCodeGen::DoTransitionElementsKind(LTransitionElementsKind* instr) {
   __ Branch(&not_applicable, ne, scratch, Operand(from_map));
 
   __ li(new_map_reg, Operand(to_map));
-  if (IsFastSmiElementsKind(from_kind) && IsFastObjectElementsKind(to_kind)) {
+  if (IsSimpleMapChangeTransition(from_kind, to_kind)) {
     __ sw(new_map_reg, FieldMemOperand(object_reg, HeapObject::kMapOffset));
     // Write barrier.
     __ RecordWriteField(object_reg, HeapObject::kMapOffset, new_map_reg,