[PATCH] D66669: [X86] Remove what little support we had for MPX

[Craig Topper via Phabricator via llvm-commits]

craig.topper created this revision.
craig.topper added reviewers: RKSimon, spatel.
Herald added a subscriber: hiraditya.
Herald added a project: LLVM.

-Deprecate -mmpx and -mno-mpx command line options
-Remove CPUID detection of mpx for -march=native
-Remove MPX from all CPUs
-Remove __MPX__ preprocessor define

I've left the "mpx" string in the backend so we don't fail on old IR, but its not connected to anything.

gcc has also deprecated these command line options. https://www.phoronix.com/scan.php?page=news_item&px=GCC-Patch-To-Drop-MPX


https://reviews.llvm.org/D66669

Files:
  clang/include/clang/Driver/Options.td
  clang/lib/Basic/Targets/X86.cpp
  clang/lib/Basic/Targets/X86.h
  clang/test/Driver/x86-target-features.c
  clang/test/Preprocessor/predefined-arch-macros.c
  llvm/lib/Support/Host.cpp
  llvm/lib/Target/X86/X86.td
  llvm/lib/Target/X86/X86InstrInfo.td
  llvm/lib/Target/X86/X86InstrMPX.td
  llvm/lib/Target/X86/X86Subtarget.h

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