[PATCH] Add ARM64 CLS patterns

[Louis Gerbarg]

This patch adds patterns to emit CLS (count leading sign bits) instructions on ARM64 when appropriate. Test cases included.

Louis

-------------- next part --------------
A non-text attachment was scrubbed...
Name: 0001-Add-ARM64-CLS-patterns.patch
Type: application/octet-stream
Size: 2473 bytes
Desc: not available
URL: <http://lists.llvm.org/pipermail/llvm-commits/attachments/20140409/8c057cac/attachment.obj>