[PATCH] D92083: [PowerPC] Lower the SETCC/SELECT_CC/BR_CC as libcall for fp128 with Power9 vector disabled
Nemanja Ivanovic via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Mon Dec 28 04:10:51 PST 2020
nemanjai added a comment.
Please explain in the description of the review (and subsequent commit message) why custom lowering is needed. I suppose for `SELECT_CC`, it is needed because using `setOperationAction()` uses the result type which is only guaranteed to match the true/false value but not the comparison types. However, it is not immediately obvious to me why we need custom lowering for `BR_CC`.
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rG LLVM Github Monorepo
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https://reviews.llvm.org/D92083/new/
https://reviews.llvm.org/D92083
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