ZERO (tiles) Zero a list of 64-bit element ZA tiles Zeroes all bytes within each of the up to eight listed 64-bit element tiles named ZA0.D to ZA7.D, leaving the other 64-bit element tiles unmodified. This instruction does not require the PE to be in Streaming SVE mode, and it is expected that this instruction will not experience a significant slowdown due to contention with other PEs that are executing in Streaming SVE mode. For programmer convenience an assembler must also accept the names of 32-bit, 16-bit, and 8-bit element tiles which are converted into the corresponding set of 64-bit element tiles. In accordance with the architecturally defined mapping between different element size tiles: Zeroing the 8-bit element tile name ZA0.B, or the entire array name ZA, is equivalent to zeroing all eight 64-bit element tiles named ZA0.D to ZA7.D. Zeroing the 16-bit element tile name ZA0.H is equivalent to zeroing 64-bit element tiles named ZA0.D, ZA2.D, ZA4.D, and ZA6.D. Zeroing the 16-bit element tile name ZA1.H is equivalent to zeroing 64-bit element tiles named ZA1.D, ZA3.D, ZA5.D, and ZA7.D. Zeroing the 32-bit element tile name ZA0.S is equivalent to zeroing 64-bit element tiles named ZA0.D and ZA4.D. Zeroing the 32-bit element tile name ZA1.S is equivalent to zeroing 64-bit element tiles named ZA1.D and ZA5.D. Zeroing the 32-bit element tile name ZA2.S is equivalent to zeroing 64-bit element tiles named ZA2.D and ZA6.D. Zeroing the 32-bit element tile name ZA3.S is equivalent to zeroing 64-bit element tiles named ZA3.D and ZA7.D. The preferred disassembly of this instruction uses the shortest list of tile names that represent the encoded immediate mask. For example: An immediate which encodes 64-bit element tiles ZA0.D, ZA1.D, ZA4.D, and ZA5.D is disassembled as {ZA0.S, ZA1.S}. An immediate which encodes 64-bit element tiles ZA0.D, ZA2.D, ZA4.D, and ZA6.D is disassembled as {ZA0.H}. An all-ones immediate is disassembled as {ZA}. An all-zeros immediate is disassembled as an empty list { }. Green True 1 1 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 ZERO { <mask> } if !IsFeatureImplemented(FEAT_SME) then UNDEFINED; constant bits(8) mask = imm8; constant integer esize = 64; <mask> Is a list of up to eight 64-bit element tile names separated by commas, encoded in the "imm8" field. CheckSMEAndZAEnabled(); constant integer SVL = CurrentSVL; constant integer dim = SVL DIV esize; constant bits(dim*dim*esize) result = Zeros(dim*dim*esize); if IsFeatureImplemented(FEAT_TME) && TSTATE.depth > 0 then FailTransaction(TMFailure_ERR, FALSE); for i = 0 to 7 if mask<i> == '1' then ZAtile[i, esize, dim*dim*esize] = result;