what does zvl*b means ?

[unicormbu]

there is cmd :
tools/iree-compile
--iree-hal-target-backends=llvm-cpu
--iree-llvmcpu-target-triple=riscv64
--iree-llvmcpu-target-abi=lp64d
--iree-llvmcpu-target-cpu-features="+m,+a,+f,+d,+zvl512b,+v"
--riscv-v-fixed-length-vector-lmul-max=8 \

does v mean rvv1.0 ?
and zvl 512b means ?

[dcaballe]

It's one of the ISA extensions: https://five-embeddev.com/quickref/isa_ext.html