[PATCH] D37388: [X86] Allow cross-lane permutations for sub targets supporting AVX2.
Simon Pilgrim via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Mon Sep 4 04:32:24 PDT 2017
RKSimon added a comment.
I've added the test case for PR34369 at https://reviews.llvm.org/rL312481 - please can you rebase?
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Comment at: lib/Target/X86/X86ISelLowering.cpp:12079
// less expensive. The flags track whether the given lane contains an element
// that crosses to another lane.
+ if (!Subtarget.hasAVX2()) {
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Update this comment to explain the AVX2 path
https://reviews.llvm.org/D37388
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