[PATCH] D32605: Recognize CTLZ builtin

[Joerg Sonnenberger via Phabricator via llvm-commits]

joerg added a comment.

Yeah, but even the generic expansion results in ~19 instructions on ARMv4. Compare that to one instruction in the loop and it can hardly be said to be a general win.


Repository:
  rL LLVM

https://reviews.llvm.org/D32605