On 2/10/07, Donald Bruce Stewart <[EMAIL PROTECTED]> wrote:
To everyone's surprise, GHC 6.6 beats GCC (3.3.5) here, at least the two test
machines:
$ ghc -O -fexcess-precision -fbang-patterns -optc-O3 -optc-ffast-math
-optc-mfpmath=sse -optc-msse2 A.hs -o a
$ time ./a
3.333333
./a 0.96s user 0.01s system 99% cpu 0.969 total
^^^^^
Versus gcc 3.3.5:
$ gcc -O3 -ffast-math -mfpmath=sse -msse2 -std=c99 t.c -o c_loop
$ time ./c_loop
3.333333
./c_loop 1.01s user 0.01s system 97% cpu 1.046 total
^^^^^
There's no doubt that GHC is doing well here, but is that really a
statistically significant difference? Certainly, it's great that GHC
and GCC are doing at least about equally well, but I wouldn't conclude
just from that data that GHC *beats* GCC.
Cheers,
Kirsten
--
Kirsten Chevalier* [EMAIL PROTECTED] *Often in error, never in doubt
"Ninety-nine percent of everything that is done in the world, good and bad, is
done to pay a mortgage. The world would be a much better place if everyone
rented." -- Christopher Buckley
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