[PATCH] D144381: [SCEV] Added a utility method that raising the number 2 to the desired power to SCEV

[Nikita Popov via Phabricator via llvm-commits]

nikic added a comment.

> I talked to Dmitry offline, and the motivating example is in downstream code. However, I think this utility function is still a good thing to have in general, maybe someone else will use it.

There are two uses of APInt::getOneBitSet() that could make use of this API -- but they specify the bitwidth as an integer, not as a type.

Though TBH I can't say the value of `getPowerOfTwo(BitWidth, TZ)` over `getConstant(APInt::getOneBitSet(BitWidth, TZ))` is particularly large.


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  https://reviews.llvm.org/D144381/new/

https://reviews.llvm.org/D144381