Hi,
In cortex-a8.md call cost is set to 32, while in cortex-a9.md it's 0:
== cortex-a8.md ==
;; Call latencies are not predictable. A semi-arbitrary very large
;; number is used as "positive infinity" so that everything should be
;; finished by the time of return.
(define_insn_reservation "cort
Hi,
We've found that constant splitting on ARM can be very inefficient, if
it's done inside a loop.
For example, the expression
a = a & 0xff00ff00;
will be translated into the following code (on ARM, only 8-bit values
shifted by an even number can be used as immediate arguments):
bic
Hello Ian,
Tuesday, July 3, 2007, 6:23:02 PM, you wrote:
> Adding a new field to mem_attrs could be a problem. You'll have to
> measure to see how much the memory usage changes.
We have tested that previously with alias-export patch, which uses the
same mechanism for saving original exprs for r
