[Yhc] Yhc: A second impression

[Thorkil Naur]

Hello,

On Wednesday 14 February 2007 09:48, Andrew Wilkinson wrote:
> ...
> No, by default Yhi is not built with -O, but by passing type=release to
> scons it will be.
> ... run 'scons 
> --config=force'
> ,,,

Thanks a lot. Combining this, I got yhc/yhi compiled with ghc -O and gcc -O2.

On Tuesday 13 February 2007 23:49, Neil Mitchell wrote:
> ...
> Yhc should be faster than Hugs, I would guess twice as fast as Hugs 
> normally. 
> ...

And, indeed, with this build of yhc, I get the following:

...
__   __ __  __  ____   ___      _________________________________________
||   || ||  || ||  || ||__      Hugs 98: Based on the Haskell 98 standard
||___|| ||__|| ||__||  __||     Copyright (c) 1994-2005
||---||         ___||           World Wide Web: http://haskell.org/hugs
||   ||                         Bugs: http://hackage.haskell.org/trac/hugs
||   || Version: 20070105       _________________________________________

Haskell 98 mode: Restart with command line option -98 to enable extensions

Type :? for help
Main> t3: 2007-Feb-13 20.08
t3I_20: fecFactorList [6..105] r43r 1300 4300 1
t3I_20: (1963506722254397,"(1297,4297,[(77,ECUndefined {ecd = 
1963506722254397})])")

Main> [Leaving Hugs]

real    6m14.572s
user    5m38.863s
sys     0m4.036s
Compiling IntMath          ( IntMath.hs )
...
Compiling Main             ( t3.hs )

real    0m47.459s
user    0m38.359s
sys     0m1.534s
t3: 2007-Feb-13 20.08
t3I_20: fecFactorList [6..105] r43r 1300 4300 1
t3I_20: (1963506722254397,"(1297,4297,
[(77,ECUndefined{ecd=1963506722254397})])")

real    2m55.289s
user    2m32.733s
sys     0m2.016s

So -O'd yhc runs t3 at roughly twice the speed of Hugs.

Best regards
Thorkil