Tom Eccles 6be0e97989
[flang] Add fastmath attributes to complex arithmetic (#70690)
Propagate fast math flags through complex number lowering (when lowering
fir.*c directly to llvm floating point operations).

The lowering path through the MLIR complex dialect is unchanged.

This leads to a small improvement in spec2017 fotonik3d_r.
2023-10-31 16:15:13 +00:00
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