diff options
author | Dmitry Petrashko <dmitry.petrashko@gmail.com> | 2014-04-04 12:14:43 +0200 |
---|---|---|
committer | Dmitry Petrashko <dmitry.petrashko@gmail.com> | 2014-04-11 14:51:20 +0200 |
commit | 6ebf6e2c3ef270f226a0fb42ebd59d24449942cf (patch) | |
tree | 66c35ac55cb4d4aad5c09d5a074894e682aabdd7 /tests/pos/typers.scala | |
parent | 4a3b96282584c77c85ae51f5d29cf7c6082cd7fb (diff) | |
download | dotty-6ebf6e2c3ef270f226a0fb42ebd59d24449942cf.tar.gz dotty-6ebf6e2c3ef270f226a0fb42ebd59d24449942cf.tar.bz2 dotty-6ebf6e2c3ef270f226a0fb42ebd59d24449942cf.zip |
TailRec phase and tests for it.
Ported tailcall phase from scalac with such changes:
- all transformation is done in the phase itself
(previously half of the work was done in backend)
- it is now able to run before uncurry
- it is now a treeTransform
- renamed to tailrec to make it more obvious that
this phase transforms only recursive calls.
For now this is a single phase which speculatively
transforms DefDefs.
Speculation can be potentially removed by
splitting into 2 phases:
one detecting which methods should be transformed
second performing transformation.
But, as transformation requires as same amount of work
as detection, I believe it will be simpler to maintain
it as a single phase.
Conflicts:
tests/pos/typers.scala
Diffstat (limited to 'tests/pos/typers.scala')
-rw-r--r-- | tests/pos/typers.scala | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/tests/pos/typers.scala b/tests/pos/typers.scala index 4f012e7bf..a95af558e 100644 --- a/tests/pos/typers.scala +++ b/tests/pos/typers.scala @@ -77,7 +77,7 @@ object typers { class C { - @tailrec def factorial(acc: Int, n: Int): Int = (n: @switch) match { + @tailrec final def factorial(acc: Int, n: Int): Int = (n: @switch) match { case 0 => acc case _ => factorial(acc * n, n - 1) } |