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Diffstat (limited to 'docs/users_guide/8.12.1-notes.rst')
| -rw-r--r-- | docs/users_guide/8.12.1-notes.rst | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/docs/users_guide/8.12.1-notes.rst b/docs/users_guide/8.12.1-notes.rst index 5c478b8fa4..c15869df75 100644 --- a/docs/users_guide/8.12.1-notes.rst +++ b/docs/users_guide/8.12.1-notes.rst @@ -10,7 +10,14 @@ following sections. Highlights ---------- -- TODO +* NCG + + - The linear register allocator saw improvements reducing the number + of redundant move instructions. Rare edge cases can see double + digit improvements in runtime for inner loops. + + In the mean this improved runtime by about 0.8%. For details + see ticket #17823. Full details ------------ @@ -148,11 +155,11 @@ Arrow notation ``hsGroupTopLevelFixitySigs`` function, which collects all top-level fixity signatures, including those for class methods defined inside classes. -- The ``Exception`` module was boiled down acknowledging the existence of +- The ``Exception`` module was boiled down acknowledging the existence of the ``exceptions`` dependency. In particular, the ``ExceptionMonad`` class is not a proper class anymore, but a mere synonym for ``MonadThrow``, - ``MonadCatch``, ``MonadMask`` (all from ``exceptions``) and ``MonadIO``. - All of ``g*``-functions from the module (``gtry``, ``gcatch``, etc.) are + ``MonadCatch``, ``MonadMask`` (all from ``exceptions``) and ``MonadIO``. + All of ``g*``-functions from the module (``gtry``, ``gcatch``, etc.) are erased, and their ``exceptions``-alternatives are meant to be used in the GHC code instead. |