[PATCH] D91937: [ISel] Port AArch64 SABD and UABD to DAGCombine
Dave Green via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Wed Nov 25 09:10:05 PST 2020
dmgreen updated this revision to Diff 307632.
dmgreen marked an inline comment as done.
dmgreen added a comment.
Thanks for taking a look.
> What other archs have equivalent instructions?
It was MVE I was hoping to share this with, over in the ARM backend. I don't know if any other backend would find this useful too - it would be great if they did. I find it hard enough to know what ARM instructions do some of the time let along other architectures! I believe the X86 instruction (PSADBW) works quite differently, as it includes a reduction step?
CHANGES SINCE LAST ACTION
-------------- next part --------------
A non-text attachment was scrubbed...
Size: 10052 bytes
Desc: not available
More information about the llvm-commits