[X86][docs] Add mention of removal of 'mpx' backend feature to the release notes.

I removed the feature from X86.td in ebe5f17f9c
This commit is contained in:
Craig Topper 2020-07-23 08:24:45 -07:00
parent cfe40acd16
commit 68382d5852
1 changed files with 4 additions and 0 deletions

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@ -86,6 +86,10 @@ Changes to the X86 Target
During this release ...
* The 'mpx' feature was removed from the backend. It had been removed from clang
frontend in 10.0. Mention of the 'mpx' feature in an IR file will print a
message to stderr, but IR should still compile.
Changes to the AMDGPU Target
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