[PATCH][AVX512] Add masked leadz intrinsics

[Demikhovsky, Elena]

LGTM.

-  Elena

-----Original Message-----
From: Cameron McInally [mailto:cameron.mcinally at nyu.edu] 
Sent: Tuesday, June 10, 2014 18:57
To: llvm-commits at cs.uiuc.edu
Cc: Demikhovsky, Elena
Subject: [PATCH][AVX512] Add masked leadz intrinsics

Hey guys,

Here is a small patch to add AVX512 masked leadz intrinsics. This piggybacks off of the VPCONFLICT patterns.

More patches to support the conflict detection instructions to follow...

Tia,
Cameron
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