fix(decode): scala fp fu's fmt use fpuCtrl instead of vsew

perf: use perfUtils in `Utility` (#3190)

Currently, log and perf utilities such as `XSPerfAccumulate` are
implemented in many repositories like XiangShan, CoupledL2 and HuanCun.
This PR unifies th

perf: use perfUtils in `Utility` (#3190)

Currently, log and perf utilities such as `XSPerfAccumulate` are
implemented in many repositories like XiangShan, CoupledL2 and HuanCun.
This PR unifies them and put them in Utility repository.

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yunsuan, Fpu: switch to new Fpu (#2995)

FDivSqrt: result box

backend: add scalar float function unit

Fu: add fp fu wrapper