Turning on -funbox-small-strict-fields by default in GHC 7.8
Johan Tibell
johan.tibell at gmail.com
Fri Apr 26 19:12:08 CEST 2013
On Thu, Apr 25, 2013 at 9:56 AM, Johan Tibell <johan.tibell at gmail.com>wrote:
>
>
> - Run the nofib suite, which now includes some code with strict fields
> from the language shootout suite, as a sanity check.
>
> Here are the nofib results (using the benchmarks that are enabled by
default):
Min -0.1% -0.0% -1.4% -2.7% -5.7%
Max +0.0% +0.3% +1.8% +2.4% +0.0%
Geometric Mean -0.0% +0.0% +0.2% +0.1% -0.1%
I looked at the outliers and none of them have strict fields so this is
just measuring noise.
Aside: This is another reminder that we who promised to be performance
czars need to look into more reliable benchmarks (with confidence
intervals).
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