[PATCH] D59576: [X86] Add CMPXCHG8B feature flag. Set it for all CPUs except i386/i486 including 'generic'. Disable use of CMPXCHG8B when this flag isn't set.

[Craig Topper via Phabricator via llvm-commits]

This revision was automatically updated to reflect the committed changes.
Closed by commit rG8d46403b8e13: [X86] Add CMPXCHG8B feature flag. Set it for all CPUs except i386/i486… (authored by craig.topper).

Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D59576/new/

https://reviews.llvm.org/D59576

Files:
  llvm/lib/Support/Host.cpp
  llvm/lib/Target/X86/X86.td
  llvm/lib/Target/X86/X86ISelLowering.cpp
  llvm/lib/Target/X86/X86InstrCompiler.td
  llvm/lib/Target/X86/X86InstrInfo.td
  llvm/lib/Target/X86/X86Subtarget.h
  llvm/test/CodeGen/X86/atomic64.ll
  llvm/test/CodeGen/X86/cmpxchg8b.ll

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