MIPS: port Add complete ElementsKind information directly to Map for objects with elements.

src/mips/macro-assembler-mips.cc

Index: src/mips/macro-assembler-mips.cc
diff --git a/src/mips/macro-assembler-mips.cc b/src/mips/macro-assembler-mips.cc
index bd585946f11d546bed602bd8d338b4ca1f0f1c5c..fe6f1aefda4eb353c404aec997aae73cbcd31499 100644
--- a/src/mips/macro-assembler-mips.cc
+++ b/src/mips/macro-assembler-mips.cc
@@ -2642,6 +2642,16 @@ void MacroAssembler::CopyBytes(Register src,
 }
 
 
+void MacroAssembler::CheckFastElements(Register map,
+                                       Register scratch,
+                                       Label* fail) {
+  STATIC_ASSERT(JSObject::FAST_ELEMENTS == 0);
+  lbu(scratch, FieldMemOperand(map, Map::kBitField2Offset));
+  And(scratch, scratch, Operand(Map::kMaximumBitField2FastElementValue));
+  Branch(fail, hi, scratch, Operand(zero_reg));
+}
+
+
 void MacroAssembler::CheckMap(Register obj,
                               Register scratch,
                               Handle<Map> map,