[X86][docs] Add mention of removal of 'mpx' backend feature to the release notes.
authorCraig Topper <craig.topper@intel.com>
Thu, 23 Jul 2020 15:24:45 +0000 (08:24 -0700)
committerCraig Topper <craig.topper@intel.com>
Thu, 23 Jul 2020 15:25:34 +0000 (08:25 -0700)
commit68382d58525b90b610ab02847fdd4e63a3396163
tree2381163a427d53400f01cc25588557b5e92abdf1
parentcfe40acd161d2b8a38c0d99b7f82f50e0d1e77db
[X86][docs] Add mention of removal of 'mpx' backend feature to the release notes.

I removed the feature from X86.td in ebe5f17f9c396f14742a7c747951b65eaada158e
llvm/docs/ReleaseNotes.rst