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

[Hans Wennborg via llvm-commits]

hans added a comment.

In http://reviews.llvm.org/D15240#302911, @jfb wrote:

> Looks good overall, though I haven't validated the list of supported CPUs. How did you create it?


I added the feature to all the architectures which seemed (by looking at Wikipedia) significantly newer than 2005. It's probably not an exhaustive list, but I believe it's conservatively correct.


http://reviews.llvm.org/D15240