tree 52999e8a65da7d00aab77c46ef47734d78098f59
parent 09f3b5ecb16e50d1752dbb57a0d0c3c170dd5537
author Jessica Paquette <jpaquette@apple.com> 1550532804 +0000
committer Jessica Paquette <jpaquette@apple.com> 1550532804 +0000

[GlobalISel][AArch64] Legalize + select some llvm.ctlz.* intrinsics

Legalize/select llvm.ctlz.*

Add select-ctlz to show that we actually select them. Update arm64-clrsb.ll and
arm64-vclz.ll to show that we perform valid transformations in optimized builds,
and document where GISel can improve.

Differential Revision: https://reviews.llvm.org/D58155

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@354299 91177308-0d34-0410-b5e6-96231b3b80d8