[PATCH] D79162: [Analysis] TTI: Add CastContextHint for getCastInstrCost

[Florian Hahn via Phabricator via llvm-commits]

fhahn added inline comments.


================
Comment at: llvm/include/llvm/Analysis/TargetTransformInfo.h:1011
+    Interleave,    ///< The cast is used with an interleaved load/store.
+    Reversed,      ///< The cast is used with a reversed load/store.
+  };
----------------
Did you consider also excluding non load/store cast uses? For example, it might be worth to include arithmetic instructions into which casts can be folded, e.g. USUBL & co on AArch64.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D79162/new/

https://reviews.llvm.org/D79162