tree 902793641e25fdafd5c5f10fbfd8a79331b73cb0
parent d74926b4d5f1a2d0219ca47da63006205e731649
author Craig Topper <craig.topper@intel.com> 1571096904 +0000
committer Craig Topper <craig.topper@intel.com> 1571096904 +0000

[X86] Teach X86MCodeEmitter to properly encode zmm16-zmm31 as index register to vgatherpf/vscatterpf.

We need to encode bit 4 into the EVEX.V' bit. We do this right
for regular gather/scatter which use either MRMSrcMem or MRMDestMem
formats.  The prefetches use MRM*m formats.

Fixes an issue recently added to PR36202.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@374849 91177308-0d34-0410-b5e6-96231b3b80d8