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

[JF Bastien via llvm-commits]

jfb added inline comments.

================
Comment at: llvm/trunk/lib/Target/X86/X86.td:561
@@ -546,3 +560,3 @@
                                FeatureCMPXCHG16B, FeatureLZCNT, FeaturePOPCNT,
                                FeatureSlowBTMem, FeatureSlowSHLD]>;
 def : Proc<"barcelona",       [FeatureSSE4A, Feature3DNowA, FeatureFXSR,
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I think this one could have it as well?


Repository:
  rL LLVM

http://reviews.llvm.org/D15240