Messages in this thread | | | Date | Sat, 23 Jan 1999 01:33:05 +0100 | From | Marc Espie <> | Subject | Re: -fno-strength-reduce |
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In article <19990122154207.A6697@wogglebug.cygnus.com> meissner wrote: >My personnel opinion is that strength reduction should be disabled on register >limited machines like the x86 family, since the gains that come from losing the >multiply are lost due to the additional register pressure the extra register >uses. However, I lost that battle many years ago (RMS wanted -O2 to be >consistant across machines), and have not opened it up much since then.
Does this still apply to the recent batch of egcs-current ? I've been happily surprised to see that egcs-current actually outputs better code than 2.8.1 on x86 in many situations, so maybe it also does a better job of deciding when to apply strength reduction on SMALL REGISTER CLASSES ?
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