SVE Instruction List by Dougall Johnson
SQDECP (scalar): Signed saturating decrement scalar by count of true predicate elements
SQDECP Xdn, Pm.B (SVE (SME
int64_t svqdecp[_n_s64]_b8(int64_t op, svbool_t pg)
128-bit SVE
Set (3) to (2) − popcount( (1) ), with signed saturation to −0x8000000000000000.
256-bit SVE
Set (3) to (2) − popcount( (1) ), with signed saturation to −0x8000000000000000.
512-bit SVE
Set (3) to (2) − popcount( (1) ), with signed saturation to −0x8000000000000000.
Larger sizes
1024-bit SVE
Set (3) to (2) − popcount( (1) ), with signed saturation to −0x8000000000000000.
2048-bit SVE
Set (3) to (2) − popcount( (1) ), with signed saturation to −0x8000000000000000.
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Inspired by and based on the x86/x64 SIMD Instruction List by Daytime.