fix(vfalu): fix bug of allFFlagsEn, when vm is all zero flags should be zero (#4380)

fix(vfalu): fix bug of allFFlagsEn when lastUop is reduction unorder sum (#4244)

fix(vfalu): fix bug of outIsFisrtGroup when lmul=8 sew=16 uopidx>7 (#4201)

fix(VFALU): fix bug of f16FirstFoldMaskUnorder when fold to 1/2 (#4181)

feat(zvfh,zfh): add F16 support

fix(fof): always use tail undisturbed when vl updated by un-raised exception.

fix(rv64v): not modify fflags when vl is zero (#3658)

Vfalu: fix fflagsRedMask use outVecCtrl (#3399)

VFALU and VFMA: fix bug of vlmul when outWiden is 1 (#3352)

VFALU and VFMA: fix bug of vlmul when outWiden is 1

build: purge chisel 3 and add deprecation check (#3250)

Vfalu: fix vfredusum fflags (#3214)

Each uop need fflags according to fold situation.

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.

show more ...

fix vfalu: only first_group, lastuop and redordered set fflags last bit (#3149)

Vfalu: add fflagsEn default value and fix vfredmin/max (#3137)

fix vfredmin/max
when only one active src and the src is sNAN, the result should be sNAN not cNAN
set default result of fflags mask ,

Vfalu: add fflagsEn default value and fix vfredmin/max (#3137)

fix vfredmin/max
when only one active src and the src is sNAN, the result should be sNAN not cNAN
set default result of fflags mask ,when not fold
set fflagsen of last uop to 0x00000001

show more ...

Vfalu: fix ffagsEn logic for vfredunction (#3116)

when fold , only some bits of fflags from vfalu0 are valid
fflags vfredmin/max has to be masked

VFALU: fix vfredunction fflags (#3100)

fix vfredunction fflags:
Vfunordered:
first group uops, only fflags from vfalu_0 are valid;
fflag from last uop is valid
Vfordered:

VFALU: fix vfredunction fflags (#3100)

fix vfredunction fflags:
Vfunordered:
first group uops, only fflags from vfalu_0 are valid;
fflag from last uop is valid
Vfordered:
for each uops, only fflags from vfalu_0 are valid

show more ...

VPU: fix vfreduction bug; remove redundant logic for scalar compute (#3065)

vfalu: Use oldVd as input to mgu in last Uop for vfred inst (#3056)

VPU: new vcompress to fit v0&vl split; fix vfredsum/min/max (#3053)

fix vfredsum/max/min:
When the vector vfredusum/max/min consists entirely of inactive elements
and vs1[0] is NaN, the result sho

VPU: new vcompress to fit v0&vl split; fix vfredsum/min/max (#3053)

fix vfredsum/max/min:
When the vector vfredusum/max/min consists entirely of inactive elements
and vs1[0] is NaN, the result should be vs1[0]
When both elements of vfredusum are inactive, the temporary result
changes from positive zero to negative zero.
nes vcompress to fit v0/vl split:
The vcompress calculation combines the ones_sum result with vs1 using a
temporary register to reduce one read operation. Additionally, other
uops, except ones_sum, reduce the basemask calculation and the right
shift basemask operation.
fix vpermtest to fit new vcompress

show more ...

FuConfig: split dataBits into destDataBits and srcDataBits for distinguish input and output data width

VFALU: fix bug of fflagsEn (#2926)

replace Regnext with Regenable

VFALU: fix vfalu timing

float: fix read rouding mode which is ecnoded in the float instruction