[llvm] [RISCV] Combine vslidedown_vl with known VL and offset to a smaller LMUL (PR #66267)
Philip Reames via llvm-commits
llvm-commits at lists.llvm.org
Wed Sep 20 11:03:03 PDT 2023
https://github.com/preames requested changes to this pull request.
See previous batch of one off changes - sorry, got confused by the pr web interface.
To summarize:
* We need a more general solution to the vslidedown w/mask case. Either via general select, or by removing the mask parameter on the node. The current form is highly confusing.
* The vsrl using high lmul implies maybe we should go with the extract specific case as this lmul should be reducible as well.
https://github.com/llvm/llvm-project/pull/66267
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