The uninitialized value is immortal immovable.

R=hpayer@chromium.org

Review URL: https://codereview.chromium.org/137953008

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18939 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/hydrogen-instructions.h

@@ -3410,6 +3410,7 @@ class HConstant V8_FINAL : public HTemplateInstruction<0> {
     ASSERT(!object_.IsKnownGlobal(heap->nan_value()));
     return
         object_.IsKnownGlobal(heap->undefined_value()) ||
+        object_.IsKnownGlobal(heap->uninitialized_value()) ||
         object_.IsKnownGlobal(heap->null_value()) ||
         object_.IsKnownGlobal(heap->true_value()) ||
         object_.IsKnownGlobal(heap->false_value()) ||