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Rewrite tests for new optimizer
- SI-6941
- SI-2171
- t3430
- t3252
- t4840
- t2171
- t3430
- t3252
- t6157
- t6547
- t8062
- t8306
- t8359
- t9123
- trait-force-info
- private-inline
test cases for bugs fixed in the new optimizer
- SI-9160, the unnecessary boxing mentioned in the ticket is optimzied
since push-pop elimination (#4858).
- SI-8796
- SI-8524
- SI-7807
fix flags file for t3420
remove an empty flags file
remove unnecessary partest filters
explicit inliner warnings in test t7582
Restore the lisp test. Removing the flags file - our build runs with the
(new) optimizer enabled anyway.
The test spent the past few years as an optimizer test in pos/
see https://issues.scala-lang.org/browse/SI-4512. The attempt may fail,
but why not give it a try.
$ git lg -S"lisp"
...
| * | | | f785785 - SI-4579 Yoke the power of lisp.scala as a stress for the optimizer. (3 years, 8 months ago) <Jason Zaugg>
...
* | | | | | | 622cc99 - Revert the lisp test. (3 years, 10 months ago) <Paul Phillips>
...
* | | | | | | 97f0324 - Revived the lisp test. (3 years, 10 months ago) <Paul Phillips>
...
* | 1e0f7dc - Imprison the lisp test, no review. (4 years, 4 months ago) <Paul Phillips>
...
* | 6b09630 - "Freed the lisp test." Tweaked partest defaults... (4 years, 6 months ago) <Paul Phillips>
...
* | fec42c1 - Lisp test wins again, no review. (4 years, 8 months ago) <Paul Phillips>
...
* | 1c2d44d - Restored the lisp.scala test. (4 years, 8 months ago) <Paul Phillips>
...
* | 15ed892 - Temporarily sending lisp.scala to be interprete... (4 years, 8 months ago) <Paul Phillips>
...
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The pattern matcher needs to substitute references to bound
variables with references to either a) synthetic temporary vals,
or to b) selections. The latter occurs under -optimize to avoid
to be frugal with local variable slots.
For instance:
```
def test(s: Some[String]) = s match {
case Some(elem) => elem.length
}
```
Is translated to:
```
def test(s: Some[String]): Int = {
case <synthetic> val x1: Some[String] = s;
case4(){
if (x1.ne(null))
matchEnd3(x1.x.length())
else
case5()
};
case5(){
matchEnd3(throw new MatchError(x1))
};
matchEnd3(x: Int){
x
}
}
```
However, for a long time this translation failed to consider
references to the binder in types. #4122 tried to address this
by either using standard substitution facilities where available
(references to temp vals), and by expanding the patmat's
home grown substitution to handle the more complex case of
referencing a selection.
However, this left the tree in an incoherent state; while it
patched up the `.tpe` field of `Tree`s, it failed to modify the
info of `Symbol`-s.
This led to a crash in the later uncurry phase under
`-Ydelambdafy:method`.
This commit modifies the info of such symbols to get rid of stray
refeferences to the pattern binder symbols.
|
