[PATCH] D41794: [X86] Improve AVX1 shuffle lowering for v8f32 shuffles where the low half comes from V1 and the high half comes from V2 and the halves do the same operation

Craig Topper via Phabricator via llvm-commits llvm-commits at lists.llvm.org
Fri Jan 5 17:05:33 PST 2018

craig.topper created this revision.
craig.topper added reviewers: RKSimon, spatel.

To lower this we now create a new V1 containing the low half of both sources and a new V2 containing the upper half of both sources. Then we created a repeated lane shuffle of those new sources to create the final result.

This fixes PR35833



-------------- next part --------------
A non-text attachment was scrubbed...
Name: D41794.128828.patch
Type: text/x-patch
Size: 6423 bytes
Desc: not available
URL: <http://lists.llvm.org/pipermail/llvm-commits/attachments/20180106/58030390/attachment.bin>

More information about the llvm-commits mailing list