[PATCH] D113442: [InstCombine] Enable fold select into operand for FAdd, FMul, FSub and FDiv.

[LuoYuanke via Phabricator via llvm-commits]

LuoYuanke added a comment.

This patch cause regression (https://godbolt.org/z/7WYboTe16) when x86 avx512 target, because avx512 has mask instruction which can match select instruction in ISel pattern match. Move select before fadd cause the pattern match fails. I don't quite understand for the optimization opportunity for this transformation. Could you elaborate an example for it?


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https://reviews.llvm.org/D113442