[PATCH] D33572: [PPC] Implement fast bit reverse in PPCDAGToDAGISel

[Joerg Sonnenberger via llvm-commits]

On Thu, May 25, 2017 at 10:36:38PM +0000, Guozhi Wei via Phabricator via llvm-commits wrote:
> Current PPCDAGToDAGISel doesn't handle bit reverse efficiently,
> it generates bit by bit moves for it, even if we give it the following fast algorithm.

This shouldn't really be target-specific code, should it be?

Joerg