See "DECP (vector)" in the exploration tools

DECP (vector): Decrement vector by count of true predicate elements

DECP Zdn.D, Pm.D (SVE (SME

128-bit SVE

Count the non-zero predicate bits corresponding to 64-bit elements from (1), then subtract the total from each 64-bit element from (2), setting (3) to the result.

256-bit SVE

Count the non-zero predicate bits corresponding to 64-bit elements from (1), then subtract the total from each 64-bit element from (2), setting (3) to the result.

512-bit SVE

Count the non-zero predicate bits corresponding to 64-bit elements from (1), then subtract the total from each 64-bit element from (2), setting (3) to the result.

Larger sizes

1024-bit SVE

Count the non-zero predicate bits corresponding to 64-bit elements from (1), then subtract the total from each 64-bit element from (2), setting (3) to the result.

2048-bit SVE

Count the non-zero predicate bits corresponding to 64-bit elements from (1), then subtract the total from each 64-bit element from (2), setting (3) to the result.

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Inspired by and based on the x86/x64 SIMD Instruction List by Daytime.