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Re: -funsafe-loop-optimizations
- From: Robert Dewar <dewar at adacore dot com>
- To: Paul Schlie <schlie at comcast dot net>
- Cc: gcc at gcc dot gnu dot org
- Date: Sun, 02 Jan 2005 11:52:14 -0500
- Subject: Re: -funsafe-loop-optimizations
- References: <BDFD8FA3.873E%schlie@comcast.net>
Paul Schlie wrote:
Well considering the fact that most of the worlds processor consumption (by
orders of magnitude), are based, and likely will continue to be based 16-bit
or less processor architectures, which not only care about 16-bit or less
ints and pointers, but rely on them; it should likely be considered
sufficiently significant to warrant concern. (although fortunately, most
optimizations related to overcoming inefficiencies of deeply pipelined
larger machines are largely irrelevant on smaller lightly pipelined
architectures with closely coupled memory sub-systems).
This is a little misleading, yes, most of the worlds processors are 16-bit
or less, but if you count programs, you will find that 32-bit processors
dominate by a huge margin. That's because the typical pattern is a million
watches with the same (rather small and simple) program.