[PATCH] D78827: Add support for #pragma clang fp reassociate(fast|off) -- floating point control of associative math transformations

[Steve Canon via Phabricator via cfe-commits]

scanon added a comment.

> I don't think the C standard is likely to ever bless reassociative FP math with an expression-local restriction. Steve, do you actually think that would be a useful optimization mode?

I think it's pretty unlikely that C would do this, as well. It is plausibly a useful semantic mode, but I don't know that we need to reserve the name for it. I only want to raise the question, and be sure that we're aware that we're making a decision here (also, either way we need to document it clearly).


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https://reviews.llvm.org/D78827