[PATCH] D148347: [AArch64] Handle vector with two different values
Eli Friedman via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Fri Apr 14 13:50:43 PDT 2023
efriedma added a comment.
Instead of special-casing this specific pattern, maybe it makes sense to generalize to all BUILD_VECTORs with two values? Even for a completely arbitrary shuffle, you can still lower that to 5 instructions: VSELECT mask, DUP op1, DUP op2.
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https://reviews.llvm.org/D148347/new/
https://reviews.llvm.org/D148347
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