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Re: long long performance
- To: dewar at gnat dot com (Robert Dewar)
- Subject: Re: long long performance
- From: Torbjorn Granlund <tege at swox dot com>
- Date: 14 Dec 2000 01:40:23 +0100
- Cc: lehotsky at tiac dot net, meissner at cygnus dot com, gcc at gcc dot gnu dot org,rob at e-critical dot com
- References: <20001214002204.AC11434D82@nile.gnat.com>
dewar@gnat.com (Robert Dewar) writes:
It is interesting to wonder if you can do better on the x86 by using
the floating-point unit for the 64-bit integer multiply unit.
You hardly can. The three necessary conversions are very costly.
--
Torbjörn