Optimize the typeof operator.

src/arm/code-stubs-arm.cc

Index: src/arm/code-stubs-arm.cc
diff --git a/src/arm/code-stubs-arm.cc b/src/arm/code-stubs-arm.cc
index d0ff12a8d8bb347f390f687637270122961243cb..d985328afda05c15511a356e8eac0283f1a1c048 100644
--- a/src/arm/code-stubs-arm.cc
+++ b/src/arm/code-stubs-arm.cc
@@ -921,6 +921,7 @@ void CodeStub::GenerateStubsAheadOfTime(Isolate* isolate) {
   BinaryOpICStub::GenerateAheadOfTime(isolate);
   BinaryOpICWithAllocationSiteStub::GenerateAheadOfTime(isolate);
   StoreFastElementStub::GenerateAheadOfTime(isolate);
+  TypeofStub::GenerateAheadOfTime(isolate);
 }