[PATCH] D41659: Implementing missing trigonometric optimizations

[Davide Italiano via Phabricator via llvm-commits]

davide requested changes to this revision.
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Meta point: It's unclear to me whether this is something profitable to implement.
Sure, you can probably take a textbook and implement all the possible identities written there, but, what's the point?

I looked and it seems other compilers (most notably, GCC) don't implement at least the first transformation you implemented (I didn't bother to check the others).
https://godbolt.org/g/kKP5PW

tl;dr: what's your motivation?


Repository:
  rL LLVM

https://reviews.llvm.org/D41659