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Remove DotClass #4545

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Merged
merged 1 commit into from
Aug 24, 2018
Merged

Remove DotClass #4545

merged 1 commit into from
Aug 24, 2018

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smarter
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@smarter smarter commented May 17, 2018

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smarter commented May 17, 2018

test performance please

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performance test scheduled: 1 job(s) in queue, 0 running.

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Performance test finished successfully:

Visit http://dotty-bench.epfl.ch/4545/ to see the changes.

Benchmarks is based on merging with master (f9f9f4a)

@OlivierBlanvillain
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This does not seem to impact performance... What's the point of that DotClass? Should we merge anyway?

@smarter smarter force-pushed the opt/remove-DotClass branch from da99c31 to 090030a Compare August 24, 2018 10:39
@smarter smarter changed the title [wip, benchmarking] Remove DotClass Remove DotClass Aug 24, 2018
@smarter smarter force-pushed the opt/remove-DotClass branch 4 times, most recently from dd9a46f to 19df810 Compare August 24, 2018 12:44
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LGTM!


/** Throws an `UnsupportedOperationException` with the given method name. */
def unsupported(methodName: String): Nothing =
throw new UnsupportedOperationException(s"$getClass.$methodName")
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I guess getClass doesn't make much sense anymore

It's not actually useful for anything and could potentially be
detrimental to performance as the JVM will switch from a constant-time
to a linear-time lookup for "instanceof" when the class hierarchy is too
tall.
@smarter smarter force-pushed the opt/remove-DotClass branch from 19df810 to ecb69ee Compare August 24, 2018 17:09
@smarter smarter merged commit 03b9887 into scala:master Aug 24, 2018
@Blaisorblade Blaisorblade deleted the opt/remove-DotClass branch August 24, 2018 20:13
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4 participants