[PATCH] D109525: [SVE] Only combine (fneg (fma)) => FNMLA with nsz

[Peter Waller via Phabricator via llvm-commits]

peterwaller-arm added a comment.

Couple of additional notes:

- On main I landed a change to substitute fast for contract, which left the test output unmodified.
- I had to introduce generic code to propagate fast math flags for unary op building, which as far as I can tell only affects the neg.
- Likewise in LowerToPredicatedOp, it was necessary to propagate the fneg node's flags down to instructions.


Repository:
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  https://reviews.llvm.org/D109525/new/

https://reviews.llvm.org/D109525