Neil Mitchell [EMAIL PROTECTED] writes:
I just removed GHC 6.6.1 and installed 6.8.1, and I noticed something
rather unexpected. I recompiled an existing program (with -O2), and
instead of taking 30 seconds to compile, it took roughly 2 seconds.
In previous releases, certain constructs took
Hi guys.
I just removed GHC 6.6.1 and installed 6.8.1, and I noticed something
rather unexpected. I recompiled an existing program (with -O2), and
instead of taking 30 seconds to compile, it took roughly 2 seconds.
That's a really serious speedup! o_O Anybody have any idea what might
have
Hi
I just removed GHC 6.6.1 and installed 6.8.1, and I noticed something
rather unexpected. I recompiled an existing program (with -O2), and
instead of taking 30 seconds to compile, it took roughly 2 seconds.
In previous releases, certain constructs took O(n^2) time to compile.
One that was a
Not sure if this is the case but if you don't delete the old object
files and executable GHC may think that its job is already done and
give up early.
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Gwern Branwen wrote:
FWIW, I was actually discussing compilation with -O2 on 6.8 with Sjannssen and
he told me that even with -O2 turned on, GHC now defaults to -fasm instead of
-fvia-c.
Ah. Yeah, that could well make a big difference... (Especially on a
machine with insufficient RAM.)
