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57fbe873d8
Adds 17 FP three-same mnemonics (85 forms) via specgen: FMAX/FMIN/FMAXNM/FMINNM, FMULX/FRECPS/FRSQRTS, FACGE/FACGT, FCMEQ/FCMGE/FCMGT (register form), FADDP/FMAXP/FMINP/FMAXNMP/FMINNMP. Single/double forms (2S/4S/2D) are .NEON; half-precision (4H/8H) use the distinct V_4H_FP16/V_8H_FP16 operand types and are tagged .FP16. specgen gains: --mattr=+fullfp16, FP16 arrangement tokens, per-form feature tagging (derived from the operand arrangement), and per-family arrangement lists. Verified: decode round-trips incl. an FP16 form (fmax/fcmeq.4h/fmulx/faddp), arm64 check + 461 tests pass.