SVE Instruction List by Dougall Johnson
SQDECP (scalar): Signed saturating decrement scalar by count of true predicate elements
SQDECP Xdn, Pm.D, Wdn (SVE (SME
int32_t svqdecp[_n_s32]_b64(int32_t op, svbool_t pg)
128-bit SVE
Considering only predicate bits from (1) corresponding to 64-bit elements, set (3) to (2) − popcount( (1) ), with signed saturation to −0x80000000, and sign extension to 64-bit.
256-bit SVE
Considering only predicate bits from (1) corresponding to 64-bit elements, set (3) to (2) − popcount( (1) ), with signed saturation to −0x80000000, and sign extension to 64-bit.
512-bit SVE
Considering only predicate bits from (1) corresponding to 64-bit elements, set (3) to (2) − popcount( (1) ), with signed saturation to −0x80000000, and sign extension to 64-bit.
Larger sizes
1024-bit SVE
Considering only predicate bits from (1) corresponding to 64-bit elements, set (3) to (2) − popcount( (1) ), with signed saturation to −0x80000000, and sign extension to 64-bit.
2048-bit SVE
Considering only predicate bits from (1) corresponding to 64-bit elements, set (3) to (2) − popcount( (1) ), with signed saturation to −0x80000000, and sign extension to 64-bit.
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Inspired by and based on the x86/x64 SIMD Instruction List by Daytime.