tree 04def001f6af76e3b5a4c76985394e1bafeae95d
parent ed4e7c0e1292436a7dbb436054452b757001eb65
author Craig Topper <craig.topper@sifive.com> 1613667243 -0800
committer Copybara-Service <copybara-worker@google.com> 1613734519 -0800

[RISCV] Support isel of scalable vector bitcasts

These should be NOPs so we can just replace with the input. This
matches what SVE does with isel patterns for all permutations.
Custom isel saves us from having to list all permurations for
all LMULs.

Reviewed By: frasercrmck

Differential Revision: https://reviews.llvm.org/D96921

GitOrigin-RevId: c7dd92e8a590cd456b4daad87af9d3b746d05ca6