OpenJDK / jdk / hs
changeset 24732:e7d905b01c08
8038416: Access to undefined scoped variables deoptimized too much
Reviewed-by: jlaskey, lagergren
| author | attila |
|---|---|
| date | Thu, 27 Mar 2014 14:09:40 +0100 |
| parents | ab0c8fc915ae |
| children | 1e825be55fd1 |
| files | nashorn/src/jdk/nashorn/internal/codegen/CompilationEnvironment.java |
| diffstat | 1 files changed, 3 insertions(+), 2 deletions(-) [+] |
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--- a/nashorn/src/jdk/nashorn/internal/codegen/CompilationEnvironment.java Thu Mar 27 11:45:54 2014 +0100 +++ b/nashorn/src/jdk/nashorn/internal/codegen/CompilationEnvironment.java Thu Mar 27 14:09:40 2014 +0100 @@ -420,8 +420,9 @@ final Property property = find.getProperty(); final Class<?> propertyClass = property.getCurrentType(); if (propertyClass == null) { - // propertyClass == null means its Undefined, which is object - return Type.OBJECT; + // propertyClass == null means its value is Undefined. It is probably not initialized yet, so we won't make + // a type assumption yet. + return null; } else if (propertyClass.isPrimitive()) { return Type.typeFor(propertyClass); }