[PATCH] D43394: [X86] Add 'sahf' CPU feature, and emit __LAHFSAHF__ for it

[Dimitry Andric via Phabricator via cfe-commits]

dim updated this revision to Diff 134746.
dim added a comment.

Added the `sahf` feature for knm, knl and amdfam10 too.


Repository:
  rC Clang

https://reviews.llvm.org/D43394

Files:
  include/clang/Driver/Options.td
  lib/Basic/Targets/X86.cpp
  lib/Basic/Targets/X86.h
  test/CodeGen/attr-target-x86.c
  test/Preprocessor/predefined-arch-macros.c

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