Fix/erasure lub alternative #359
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... of an If, Match, or Try. Fixes scala#355.
The new scheme alignes If, Match, Try to the scheme used in SeqLiteral. This favors unboxed over boxed types. It is also simpler than the scheme in the previous commit.
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I'll have a look. |
… to understand. if(self eq self) was optimised away, not it's not even emited
Though still it would be better if erasure didn't emmit such trees, but still it's better to have this phase kore robust. Also made LabelDefs run in linear time on the size of tree instead of square on the Block-depth of tree.
Will do it in a different PR.
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@odersky please review. Especially the last commit. |
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Did only a cursory review of LabelDefs. But LGTM. |
DarkDimius
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Fix/erasure lub alternative
tgodzik
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Backport "Disable Cats flaky tests" to 3.3 LTS
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This currently fails two tests in the backend. @DarkDimius can you take a look? I think this PR is preferable to #357 but we have to figure out the status of those failures.
(Why is it better to unbox instead of box? The difference is only there if the prototype is either a wildcard type or a selection prototype. the most common case would be the selection prototype, which in this case would be either to an operation on a primitive type or to a generic operation on object (such as equals, toString, hashCode). It seems more important to make the primitive operations fast because they occur more often and take less time than the object operations. The one exception could be equals but we will probably handle this by a decorator anyway going forward.)