guardWithTest

[John Rose]

On May 21, 2009, at 8:25 PM, Charles Oliver Nutter wrote:

> Seems to be a failure in the spread, no?

Yes.  There is a bug in spread combinators in the JVM assembly code,  
so the Java code does not emit them currently.

And guardWithTest should be using a polymorphic combinator, not a  
collect/spread varargs-based one.  The polymorphic ones are harder to  
build but closer to the virtual metal.  See src/share/classes/sun/dyn/ 
*Generic.java for examples of "generic' combinators, which are  
polymorphic up to reference type erasure.  GuardWithTest should  
probably be a special case of some such thing, probably  
combineArguments working over "sun/dyn/GenericCombiner.java".

-- John