Fix method dispatch in Keyed/StoreIC, and JumpIfNotUniqueName usage

src/ic/mips/ic-compiler-mips.cc

Index: src/ic/mips/ic-compiler-mips.cc
diff --git a/src/ic/mips/ic-compiler-mips.cc b/src/ic/mips/ic-compiler-mips.cc
index 920b52a2fdf64cd7e98791bba757a1958a0910c7..c1e67f9ab6169eac7ba25c5bc80846c40c401d2f 100644
--- a/src/ic/mips/ic-compiler-mips.cc
+++ b/src/ic/mips/ic-compiler-mips.cc
@@ -27,7 +27,11 @@ Handle<Code> PropertyICCompiler::CompilePolymorphic(TypeHandleList* types,
     // In case we are compiling an IC for dictionary loads and stores, just
     // check whether the name is unique.
     if (name.is_identical_to(isolate()->factory()->normal_ic_symbol())) {
-      __ JumpIfNotUniqueName(this->name(), &miss);
+      Register tmp = scratch1();
+      __ JumpIfSmi(this->name(), &miss);
+      __ lw(tmp, FieldMemOperand(this->name(), HeapObject::kMapOffset));
+      __ lbu(tmp, FieldMemOperand(tmp, Map::kInstanceTypeOffset));
+      __ JumpIfNotUniqueNameInstanceType(tmp, &miss);
     } else {
       __ Branch(&miss, ne, this->name(), Operand(name));
     }