[commit: ghc] master: Fix a couple of inaccurate stack checks (3bebf3c)

[Joachim Breitner]

Hi Simon,


with

Am Mittwoch, den 05.11.2014, 18:15 +0000 schrieb git at git.haskell.org:
> commit 3bebf3c2d92e6defc6d17ffa237cc4a9cad71dcf
> Author: Simon Marlow <marlowsd at gmail.com>
> Date:   Tue Nov 4 21:31:00 2014 +0000
> 
>     Fix a couple of inaccurate stack checks

I observe a 5% runtime performance regression in nofib’s "integer"
benchmark:
http://ghcspeed-nomeata.rhcloud.com/timeline/?exe=2&base=2%2B68&ben=nofib%2Ftime%2Finteger&env=2&revs=50&equid=on

(The graph looks weird because codespeed doesn’t get the order of
commits right.)

Expected? Or worth looking into?

Greetings,
Joachim


-- 
Joachim “nomeata” Breitner
  mail at joachim-breitner.de • http://www.joachim-breitner.de/
  Jabber: nomeata at joachim-breitner.de  • GPG-Key: 0xF0FBF51F
  Debian Developer: nomeata at debian.org

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