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Gather load non-temporal unsigned doublewords.
Gather load non-temporal of doublewords to active elements of a vector register from memory addresses generated by a vector base plus a 64-bit unscaled scalar register offset. Inactive elements will not read Device memory or signal faults, and are set to zero in the destination vector.
A non-temporal load is a hint to the system that this data is unlikely to be referenced again soon.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 | 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
1 | 1 | 0 | 0 | 0 | 1 | 0 | 1 | 1 | 0 | 0 | Rm | 1 | 1 | 0 | Pg | Zn | Zt | ||||||||||||||
msz<1> | msz<0> | U |
if !HaveSVE2() then UNDEFINED; integer t = UInt(Zt); integer n = UInt(Zn); integer m = UInt(Rm); integer g = UInt(Pg); integer esize = 64; integer msize = 64; boolean unsigned = TRUE;
<Zt> | Is the name of the scalable vector register to be transferred, encoded in the "Zt" field. |
<Pg> | Is the name of the governing scalable predicate register P0-P7, encoded in the "Pg" field. |
<Zn> | Is the name of the base scalable vector register, encoded in the "Zn" field. |
<Xm> | Is the optional 64-bit name of the general-purpose offset register, defaulting to XZR, encoded in the "Rm" field. |
CheckSVEEnabled(); integer elements = VL DIV esize; bits(VL) base = Z[n]; bits(64) offset = X[m]; bits(64) addr; bits(PL) mask = P[g]; bits(VL) result; bits(msize) data; constant integer mbytes = msize DIV 8; if HaveMTEExt() then SetTagCheckedInstruction(TRUE); for e = 0 to elements-1 if ElemP[mask, e, esize] == '1' then addr = ZeroExtend(Elem[base, e, esize], 64) + offset; data = Mem[addr, mbytes, AccType_STREAM]; Elem[result, e, esize] = Extend(data, esize, unsigned); else Elem[result, e, esize] = Zeros(); Z[t] = result;
Internal version only: isa v32.03v31.05b, AdvSIMD v29.02, pseudocode v2020-03v2019-12_rc3_1, sve v2020-03_rc1v2019-12_rc3
; Build timestamp: 2020-04-15T132019-12-13T11:3302
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