[PATCH] D76928: [InstCombine][X86] Simplify demanded elts in SSE intrinsics with repeated args (PR24523)

[Eli Friedman via Phabricator via llvm-commits]

efriedma added a comment.

> The first 2 raise a potential problem that I don't know the answer to: what happens to target-specific intrinsics in a strict FP environment? Do we need to bypass the folds in that case?

In general, we need new intrinsics for accessing the FP environment, I think; the existing ones are readnone.


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