These went to the interpreter. vf2in/vf2iz/vf2iu/vf2id use FCVT, which
saturates like the PSP, and patch NaN to 0x7FFFFFFF like the IR
backend. vsgn keeps the sign bit on 1.0 and gives 0 below the smallest
normal. vsge and vslt select 1 or 0 on a compare whose condition is
false when unordered. EI and NI test |s| against infinity in integers.
All match the interpreter on special values, ties and denormals.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
