SVE Instruction List by Dougall Johnson
See "UMAXV" in the exploration tools

UMAXV: Unsigned maximum reduction to scalar

UMAXV Bd, Pg, Zn.B (SVE (SME
uint8_t svmaxv[_u8](svbool_t pg, svuint8_t op)

128-bit SVE

Find the maximum of the active unsigned 8-bit integer elements from (1), storing the result in (3). If there are no active elements, the result is 0.

256-bit SVE

Find the maximum of the active unsigned 8-bit integer elements from (1), storing the result in (3). If there are no active elements, the result is 0.

512-bit SVE

Find the maximum of the active unsigned 8-bit integer elements from (1), storing the result in (3). If there are no active elements, the result is 0.
Larger sizes

1024-bit SVE

Find the maximum of the active unsigned 8-bit integer elements from (1), storing the result in (3). If there are no active elements, the result is 0.

2048-bit SVE

Find the maximum of the active unsigned 8-bit integer elements from (1), storing the result in (3). If there are no active elements, the result is 0.
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Inspired by and based on the x86/x64 SIMD Instruction List by Daytime.