[PATCH] D142109: [LoopVectorize] Remove runtime check and scalar tail loop when tail-folding.

[David Sherwood via Phabricator via llvm-commits]

david-arm accepted this revision.
david-arm added a comment.
This revision is now accepted and ready to land.

LGTM!



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Comment at: llvm/test/Transforms/LoopVectorize/AArch64/sve-low-trip-count.ll:7
 ; CHECK-LABEL: @trip7_i64(
+; CHECK:       vector.ph:
+; CHECK:         %[[N_MINUS_VF:.*]] = sub i64 7, %[[VSCALE_X_VF:.*]]
----------------
I'm happy with this regression for now, since it will be fixed by D142894.


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Comment at: llvm/test/Transforms/LoopVectorize/AArch64/sve-tail-folding-optsize.ll:9
 ; CHECK-NEXT:  entry:
+; CHECK-NEXT:    br i1 false, label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
+; CHECK:       vector.ph:
----------------
This is now actually doing what `-Os` should be doing!


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D142109/new/

https://reviews.llvm.org/D142109