[PATCH] D15240: X86: Don't emit SAHF/LAHF for 64-bit targets unless explicitly supported

[Hans Wennborg via llvm-commits]

hans updated this revision to Diff 41939.
hans added a comment.

Rebase.


http://reviews.llvm.org/D15240

Files:
  lib/Target/X86/X86.td
  lib/Target/X86/X86ISelLowering.cpp
  lib/Target/X86/X86InstrInfo.cpp
  lib/Target/X86/X86InstrInfo.td
  lib/Target/X86/X86Subtarget.cpp
  lib/Target/X86/X86Subtarget.h
  test/CodeGen/X86/cmpxchg-clobber-flags.ll
  test/CodeGen/X86/peephole-na-phys-copy-folding.ll

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