[PATCH] D130339: [CodeGen] Generate efficient assembly for freeze(poison) version of `mm*_cast*` intel intrinsics
Simon Pilgrim via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Fri Jul 29 08:16:24 PDT 2022
RKSimon added inline comments.
================
Comment at: llvm/lib/Target/X86/X86InstrVecCompiler.td:74
+
+ def : Pat<(VT (insert_subvector (freeze (VT undef)), subRC:$src,
+ (iPTR 0))),
----------------
Could we add a generic pattern for "undef_or_freeze_undef" that we could use here as I imagine a lot more places are going to need something like this and we should try to avoid duplication if we can?
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D130339/new/
https://reviews.llvm.org/D130339
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