[PATCH] D145299: [InstCombine] Generate better code for std::bit_ceil

[Kazu Hirata via Phabricator via llvm-commits]

kazu added a comment.

In D145299#4205118 <https://reviews.llvm.org/D145299#4205118>, @nikic wrote:

> I haven't looked in detail what you're doing here, but you're clearly looking for the `ConstantRange` class. `makeExactICmpRegion()`, `add()`, `sub()`, `binaryNot()`, etc.

Thank you for the pointer.  I started using `ConstantRange` in this patch.


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