[PATCH] D104410: GlobalISel/Utils: Refactor constant splat match functions

[Jay Foad via Phabricator via llvm-commits]

foad added a comment.

Generally looks OK to me. Any more comments @paquette?



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Comment at: llvm/lib/CodeGen/GlobalISel/Utils.cpp:987
+                                                 bool AllowUndef) {
+  // Match as any constant and get APFloat from Reg. Allows nan splat matching.
+  if (auto SplatValAndReg = getAnyConstantSplat(VReg, MRI, AllowUndef))
----------------
What does "Allows nan splat matching" mean?


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  https://reviews.llvm.org/D104410/new/

https://reviews.llvm.org/D104410