bpu: extract wrbypass to be a module

* FDivSqrt: use hierarchy API to avoid dedup bug

* Dedup: use hartId from io port instead of core parameters

* Bump fudian

BPU: Change the u in the ITTAGE from register to SRAM implementation

This bug happens when a branch prediction results in a fetch to MMIO space, and the backend flush could not flush the MMIO, thus results in blocking.

DCache timing problem has not been solved yet. DCache structure will be further changed.

* sbuffer: add extra perf counters

* sbuffer: optmize timeout replay check timing

* sbuffer: optmize do_uarch_drain check timing

Now we only compare merge entry's vtag, check will not start until
mergeIdx is generated by PriorityEncoder

* mem, lq: optmize writeback select logic timing

* dcache: replace missqueue reill req arbiter

* dcache: refactor missqueue entry select logic

* mem: add comments for lsq data

* dcache: give amo alu an extra cycle

* sbuffer: optmize sbuffer forward data read timing

* Untested Trigger Implementation
Co-authored-by: NWilliam Wang <zeweiwang@outlook.com>
Co-authored-by: NLingrui98 <goulingrui19s@ict.ac.cn>
Co-authored-by: Nrvcoresjw <shangjiawei@rvcore.com>

BPU: implement PhyPriorityMuxGenerator, distinguish between logical priority and physical priority

* assuming that beyond fetch => oversize

implement folded global histories for tage-sc/ittage

* fix a bug of wrongly discarding some new bits to be xored
* ghr should be longer in default config to avoid falsely overriding
* move TageBanks to top, and fix SC folded history config

core: add one more cycles between dtlb and ptw

* FDivSqrt: replace hardfloat by fudian

* use pipeline branch for fudian

* fix a bug of wrongly discarding some new bits to be xored
* ghr should be longer in default config to avoid falsely overriding
* move TageBanks to top, and fix SC folded history config

* difftest: add basic difftest features for releases

This commit adds basic difftest features for every release, no matter
it's for simulation or physical design. The macro SYNTHESIS is used to
skip these logics when synthesizing the design. This commit aims at
allowing designs for physical design to be verified.

* bump ready-to-run

* difftest: add int and fp writeback data

* modify the largest history length to be 65 in order to avoid
  2 level xors on speculative update

* update ittage parameters to be an optimized one

bpu: bring folded history into use, and use previous ghr to do difftest; move tage and ittage config to top

It will help difftest skip hpm CSR access correctly

* use compressed info to do redirects
* implement folded history class