Debug Module: cherry-pick debug module from nanhu

VldMergeUnit: use vdIdx inside a field to generate mask

fix rebase errors

Mgu: use sew as element width instead of eew for indexed loads/stores

backend,param: merge vldu and vstu into one exu

Backend: add uopIdx comparing logic in deqResp for vector mem iq

UopQueue: pass on mask and vdIdx to Backend

backend: fix VldMergeUnit

Backend: WBDataPath and ROB support vlsu(vld res merge and exceptionGen)

IssueQueue: add vector load/store IssueQueue

UopQueue: use decode result instead of decoding repeatedly

Add VLSU

* miscs: optimize code style

* vector: add VLSU param system and redefine vector lq io

* VLUopQueue: add flow split and address generation logic

* VLUopQueue: add flow issue and writebac

Add VLSU

* miscs: optimize code style

* vector: add VLSU param system and redefine vector lq io

* VLUopQueue: add flow split and address generation logic

* VLUopQueue: add flow issue and writeback logic

* VLUopQueue: set vstart for elements with exception

* VLUopQueue: handle unit-stride fof loads

* VLUopQueue: implement vector masking according to vm

* vector: rewrite vector store io

* VlFlowQueue: add enqueue and dequeue logic

* VLFlowQueue: fix some coding problem

* VlFlowQueue: add issue, replay and result logic

* VLFlowQueue: add redirect logic

* Rob: fix compilation error

* vector: remove stale codes

* vector: add VSUopQueue and fix bugs for vector load

* backbone: add vector load/store execution paths

* VSFlowQueue: Basic function

* VLUopQueue: add redirect logic for load-load violation

* VSFlowQueue: fix some compile problems

* VSUopQueue: add signal to indicate whether a flow is the last one

* VSFlowQueue: inform scala sq when vector store finished

* StoreQueue: maintain sequential retirement between scalar & vector stores

* LoadQueueRAW: handle violation between vector stores & scalar loads

* LDU: add vector store to scalar load forwarding

* XSCore: fix writeback width of MemBlock

* vector: fix load/store whole register and masked unit-stride load/store emul, evl, flownum (#2383)

* VSFlowQueue: Support STLF

* VLFlowQueue: fix compile bug

* VSFlowQueue: fix compile problem

---------

Co-authored-by: xuzefan <[email protected]>
Co-authored-by: good-circle <[email protected]>
Co-authored-by: weidingliu <[email protected]>

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IssueQueue: prevent store from dequeuing after issue success

backend: fix load cancel bundle

dispatch2iq: fix dispatch error

backend: fix compile errors

backend: fix load issue ports sort

backend: fix load writeback sort

backend: refactor Dispatch2IqMemImp

backend: support hybrid unit

* filter not fake unit when generate bundles
* add fake exu unit
* hybrid unit use one load writeback port and one store writeback port

backend,mem: split hybrid units writeback bundle

fix params

backend: support HybridUnit at Dispatch Stage

add std and hybrid writeback ports to Backend

add writeback port to Backend