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Author SHA1 Message Date
beetrees
11571a005a
Fix legalizing FNEG and FABS with TypeSoftPromoteHalf (#156343) 
Based on top of #157211.

`FNEG` and `FABS` must preserve signalling NaNs, meaning they should not
convert to f32 to perform the operation. Instead legalize to `XOR` and
`AND`.

Fixes almost all of #104915
 2025-10-11 11:08:26 +09:00