Polynomial multiply long (top)
Polynomial multiply over [0, 1] the corresponding odd-numbered elements of the first and second source vectors, and place the results in the overlapping double-width elements of the destination vector. This instruction is unpredicated.
ID_AA64ZFR0_EL1.AES indicates whether the 128-bit element variant is implemented. The 128-bit element variant is illegal when executed in Streaming SVE mode, unless FEAT_SME_FA64 is implemented and enabled.
It has encodings from 2 classes: 16-bit or 64-bit elements and 128-bit element
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| 0 | 1 | 0 | 0 | 0 | 1 | 0 | 1 | != 00 | 0 | Zm | 0 | 1 | 1 | 0 | 1 | 1 | Zn | Zd | |||||||||||||
| size | U | T | |||||||||||||||||||||||||||||
if !HaveSVE2() && !HaveSME() then UNDEFINED; if size<0> == '0' then UNDEFINED; constant integer esize = 8 << UInt(size); integer n = UInt(Zn); integer m = UInt(Zm); integer d = UInt(Zd);
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| 0 | 1 | 0 | 0 | 0 | 1 | 0 | 1 | 0 | 0 | 0 | Zm | 0 | 1 | 1 | 0 | 1 | 1 | Zn | Zd | ||||||||||||
| size<1> | size<0> | U | T | ||||||||||||||||||||||||||||
if !HaveSVE2PMULL128() then UNDEFINED; constant integer esize = 128; integer n = UInt(Zn); integer m = UInt(Zm); integer d = UInt(Zd);
| <Zd> |
Is the name of the destination scalable vector register, encoded in the "Zd" field. |
| <T> |
Is the size specifier,
encoded in
|
| <Zn> |
Is the name of the first source scalable vector register, encoded in the "Zn" field. |
| <Tb> |
Is the size specifier,
encoded in
|
| <Zm> |
Is the name of the second source scalable vector register, encoded in the "Zm" field. |
if esize < 128 then CheckSVEEnabled(); else CheckNonStreamingSVEEnabled(); constant integer VL = CurrentVL; constant integer elements = VL DIV esize; bits(VL) operand1 = Z[n, VL]; bits(VL) operand2 = Z[m, VL]; bits(VL) result; for e = 0 to elements-1 bits(esize DIV 2) element1 = Elem[operand1, 2*e + 1, esize DIV 2]; bits(esize DIV 2) element2 = Elem[operand2, 2*e + 1, esize DIV 2]; Elem[result, e, esize] = PolynomialMult(element1, element2); Z[d, VL] = result;
If PSTATE.DIT is 1:
Internal version only: aarchmrs v2023-12_rel, pseudocode v2023-12_rel, sve v2023-12_rel ; Build timestamp: 2023-12-15T16:46
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