[PATCH] D40692: AMDGPU/EG: Add a new FeatureFMA and use it to selectively enable FMA instruction

[Matt Arsenault via Phabricator via llvm-commits]

arsenm accepted this revision.
arsenm added a comment.
This revision is now accepted and ready to land.

LGTM



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Comment at: lib/Target/AMDGPU/R600ISelLowering.cpp:214-217
+  if (!Subtarget->hasFMA()) {
+    setOperationAction(ISD::FMA, MVT::f32, Expand);
+    setOperationAction(ISD::FMA, MVT::f64, Expand);
+  }
----------------
There's not much point in doing this since it will just turn into an unsupported libcall


Repository:
  rL LLVM

https://reviews.llvm.org/D40692