> The powerpc backend claims to have a fast divide instruction
> (via RTX_COST if you care about such things). We'll replace
> with shift when dividing by powers of 2, but won't try the
> multiply by a constant inverse trick.
To follow up: Alan Modra found and fixed the bug, it seems we were only
using the optimisation when the arguments were <= 32bit.
The target we use is RS64a which has a cost of 60 odd instructions
for divide.
Anton
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This archive was generated by hypermail 2b29 : Tue Jan 15 2002 - 21:00:49 EST