[PATCH] D152298: [RISCV] Use vslidedown.vi vN, vN, 0 instead of vslideup.vi vN, vM, 0 for subvector insertion

[Luke Lau via Phabricator via llvm-commits]

luke added a comment.

Out of curiosity I tried it as a DAG combine here: https://reviews.llvm.org/D152368
It seems to catch a few more cases, but I'm not particularly opinionated about either approach.


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https://reviews.llvm.org/D152298