[llvm] [LV] Add vplan folds for urem(X, PowerOf2) -> and(X, PowerOf2 - 1) (PR #212198)

[Ramkumar Ramachandra via llvm-commits]

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@@ -0,0 +1,36 @@
+; RUN: opt -p debugify,loop-vectorize -force-vector-width=4 -force-vector-interleave=1 -S \
+; RUN:   -vplan-print-after=printOptimizedVPlan < %s 2> %t | FileCheck %s
+; RUN: cat %t | FileCheck %s --check-prefix=VPLAN
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artagnon wrote:

The issue with this test is that it unfortunately cannot be regen'ed by UTC? Better to avoid this kind of incantation if possible? :(

https://github.com/llvm/llvm-project/pull/212198