[PATCH] D121410: Have cpu-specific variants set 'tune-cpu' as an optimization hint

[Erich Keane via Phabricator via cfe-commits]

erichkeane updated this revision to Diff 414650.
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add a 'translation' feature to the x86 target so that we can get the 'tune cpu' name from the list.  Note that there are 9 with blanks that I was unable to figure out the corresponding name (I have an email out to @andrew.w.kaylor  and @pengfei to tell me what it should be). In the meantime, these will result in NO tune-cpu.

Also note that I intentionally added this conversion from the 'alias' as well.  This gives us the power to use an alias to change the 'tune' if we care to.  Typically I'd consider this unimportant, but it means that previously mentioned VendorA (@arsenm) could simply add their processors as aliases and get the tune feature more easily.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D121410/new/

https://reviews.llvm.org/D121410

Files:
  clang/include/clang/Basic/TargetInfo.h
  clang/lib/Basic/Targets/X86.cpp
  clang/lib/Basic/Targets/X86.h
  clang/lib/CodeGen/CodeGenModule.cpp
  clang/test/CodeGen/attr-cpuspecific-avx-abi.c
  clang/test/CodeGen/attr-cpuspecific.c
  llvm/include/llvm/Support/X86TargetParser.def

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