[llvm] [RISCV] Enable tail folding by default (PR #151681)

[Philip Reames via llvm-commits]

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@@ -4,28 +4,16 @@
 define void @small_trip_count_min_vlen_128(ptr nocapture %a) nounwind vscale_range(4,1024) {
 ; CHECK-LABEL: @small_trip_count_min_vlen_128(
 ; CHECK-NEXT:  entry:
-; CHECK-NEXT:    br i1 false, label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
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preames wrote:

This looks like a minor non-blocking regression.  Probably a bad interaction with falling back to data-without-lane-mask instead of unpredicated.

https://github.com/llvm/llvm-project/pull/151681