[PATCH] D63405: GlobalISel: Don't lose fneg flags when lowering to fsub

[Matt Arsenault via Phabricator via llvm-commits]

arsenm added a comment.

In D63405#1546558 <https://reviews.llvm.org/D63405#1546558>, @mcberg2017 wrote:

> I am saying you have it right Matt for using MI flags, but we should guard folding based on Unsafe or nsz in the Flags.


There's no folding going on here? This is just a 1-op to 1-op legalization


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https://reviews.llvm.org/D63405