SVE Instruction List by Dougall Johnson
See "WHILEHI (predicate)" in the exploration tools

WHILEHI (predicate): While decrementing unsigned scalar higher than scalar

WHILEHI Pd.B, Xn, Xm (SVE2 (SME
svbool_t svwhilegt_b8[_u64](uint64_t op1, uint64_t op2)

128-bit SVE

Set each predicate bit in (3) corresponding to a 8-bit elements, from high to low, while (1) − n > (2), with n starting from zero and incrementing each bit. If a comparison fails, all lower predicate bits will also be set to zero.

(1), (2), and offsets computed from (1) are unsigned 64-bit integers.

256-bit SVE

Set each predicate bit in (3) corresponding to a 8-bit elements, from high to low, while (1) − n > (2), with n starting from zero and incrementing each bit. If a comparison fails, all lower predicate bits will also be set to zero.

(1), (2), and offsets computed from (1) are unsigned 64-bit integers.

512-bit SVE

Set each predicate bit in (3) corresponding to a 8-bit elements, from high to low, while (1) − n > (2), with n starting from zero and incrementing each bit. If a comparison fails, all lower predicate bits will also be set to zero.

(1), (2), and offsets computed from (1) are unsigned 64-bit integers.

Larger sizes

1024-bit SVE

Set each predicate bit in (3) corresponding to a 8-bit elements, from high to low, while (1) − n > (2), with n starting from zero and incrementing each bit. If a comparison fails, all lower predicate bits will also be set to zero.

(1), (2), and offsets computed from (1) are unsigned 64-bit integers.

2048-bit SVE

Set each predicate bit in (3) corresponding to a 8-bit elements, from high to low, while (1) − n > (2), with n starting from zero and incrementing each bit. If a comparison fails, all lower predicate bits will also be set to zero.

(1), (2), and offsets computed from (1) are unsigned 64-bit integers.

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