Hi,
Am Dienstag, den 16.09.2014, 12:59 +0000 schrieb g...@git.haskell.org: > commit fe9f7e40844802443315ef2238c4cdefda756b62 > Author: Thijs Alkemade <thijsalkem...@gmail.com> > Date: Tue Sep 16 07:55:34 2014 -0500 > > Remove special casing of singleton strings, split all strings. > > Summary: > exprIsConApp_maybe now detects string literals and correctly > splits them. This means case-statemnts on string literals can > now push the literal into the cases. if you are curious: This improves the runtime of the binary-trees nofib benchmark by 6% and reduces the size of the parstof nofib benchmark by 4.6%, although on average, binary sizes are increased by a very small amount (0.12%). There is a notable increase in allocations in bspt, cacheprof and gg (>3%). Details: http://ghcspeed-nomeata.rhcloud.com/changes/?rev=fe9f7e4084&exe=2&env=1 Am Mittwoch, den 17.09.2014, 15:58 +0000 schrieb g...@git.haskell.org: > commit b62bd5ecf3be421778e4835010b6b334e95c5a56 > Author: Herbert Valerio Riedel <h...@gnu.org> > Date: Wed Sep 17 17:54:20 2014 +0200 > > Implement `decodeDouble_Int64#` primop > > The existing `decodeDouble_2Int#` primop is rather inconvenient to use > (and in fact is not even used by `integer-gmp`) as the mantissa is split > into 3 components which would actually fit in an `Int64#` value. > > However, `decodeDouble_Int64#` is to be used by the new `integer-gmp2` > re-implementation (see #9281). > > Moreover, `decodeDouble_2Int#` performs direct bit-wise operations on the > IEEE representation which can be replaced by a combination of the > portable standard C99 `scalbn(3)` and `frexp(3)` functions. This commit undoes the improvement of binary-trees’s runtime (4.6% regression), but no other notable changes. Again, I leave it to the respective commiters to decide if any of this is worth investigating. See http://ghcspeed-nomeata.rhcloud.com/timeline/?exe=2&base=2%2B68&ben=nofib%2Ftime%2Fbinary-trees&env=1&revs=50&equid=on# for the history of that particular benchmark. Greetings, Joachim -- Joachim Breitner e-Mail: m...@joachim-breitner.de Homepage: http://www.joachim-breitner.de Jabber-ID: nome...@joachim-breitner.de
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