On 06/06/13 22:03, Mans Rullgard wrote:
On 6 June 2013 12:09, Kugan <kugan.vivekanandara...@linaro.org> wrote:
On 05/06/13 21:27, Matthew Gretton-Dann wrote:
Kugan,
I don't have the source code to hand but how are the
sin()/cos()->sincos() optimizations handled?
Thanks Matt. There is a tree level pass to combine sin()/cos() into
sincos(). Commit that added this is:
http://gcc.gnu.org/viewcvs/gcc?view=revision&revision=121052. We can try
doing same thing similar here.
Is there anyway we can know in the tree level that the target does not
define integer divide?
Some targets, e.g. MIPS, have a combined div/mod instruction. Those could
benefit from this as well, unless they already achieve that optimisation
differently.
Thanks Mans. I will have a look at MIPS port.
Availability of sincos in the target is specified with the define
TARGET_HAS_SINCOS and it is being used in tree level optimizations. We
can do something similar (?) to get the information about availability
of ops/run time library call to consider optimizing.
Thanks,
Kugan
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