SVE Instruction List by Dougall Johnson
PEXT (predicate): Predicate extract from predicate-as-counter
PEXT Pd.B, PNn[imm] (SVE2.1 (SME2+S
svbool_t svpext_lane_c8(svcount_t pnn, uint64_t imm)
128-bit SVE

Decode (1) from predicate-as-counter representation to a quadruple-length predicate, and copy the quarter indicated by imm to (2).
256-bit SVE

Decode (1) from predicate-as-counter representation to a quadruple-length predicate, and copy the quarter indicated by imm to (2).
512-bit SVE

Decode (1) from predicate-as-counter representation to a quadruple-length predicate, and copy the quarter indicated by imm to (2).
Larger sizes
1024-bit SVE

Decode (1) from predicate-as-counter representation to a quadruple-length predicate, and copy the quarter indicated by imm to (2).
2048-bit SVE

Decode (1) from predicate-as-counter representation to a quadruple-length predicate, and copy the quarter indicated by imm to (2).
Report mistakes or give feedback
Inspired by and based on the x86/x64 SIMD Instruction List by Daytime.