[PATCH] D31910: [LV] Avoid vectorizing first order recurrences when phi used outside loop
Anna Thomas via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Tue Apr 11 13:26:47 PDT 2017
anna added a comment.
@mssimpso: Hi Matt, I've updated the diff to avoid vectorizing the loop when it generates incorrect code gen. Also, there's an AArch64 test case that already showcases this exact problem: generate incorrect code gen in first order recurrence. Please take a look. It's also aptly named `phi_fail2`!
https://reviews.llvm.org/D31910
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