[PATCH] D127511: [RISCV] Refine costs for i1 reductions

[Craig Topper via Phabricator via llvm-commits]

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

LGTM



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Comment at: llvm/lib/Target/RISCV/RISCVTargetTransformInfo.cpp:327
+  if (Ty->getElementType()->isIntegerTy(1))
+    // vcpop sequences, see vreduction-mask.ll.  umax, smin actually only
+    // cost 2, but we don't have enough info here so we slightly over cost.
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I really hope that max/min of i1 don't occur in normal scenarios.


Repository:
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  https://reviews.llvm.org/D127511/new/

https://reviews.llvm.org/D127511