[PATCH] D61604: [InstCombine] sink FP negation of operands through select

[Sanjay Patel via llvm-commits]

On Tue, May 7, 2019 at 7:16 AM Kevin Neal <Kevin.Neal at sas.com> wrote:

>
> How should we handle regressions in code quality that are exposed by tests?
>

One idea I had (or I may be remembering someone else's suggestion) was to
grep the existing IR regression tests for 'fsub -0.0', then create a
sibling test using fneg. If that doesn't result in the same output, then we
need to do some pattern matching enhancement.
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