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

[Michael Berg via Phabricator via llvm-commits]

mcberg2017 added a comment.

We do this as a combine earlier in target specific code under this constraint.  Matt, perhaps you just missing that combine in GlobalIsel?


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  https://reviews.llvm.org/D63405/new/

https://reviews.llvm.org/D63405