ASR (wide elements, predicated) Arithmetic shift right by 64-bit wide elements (predicated) Shift right, preserving the sign bit, active elements of the first source vector by corresponding overlapping 64-bit elements of the second source vector and destructively place the results in the corresponding elements of the first source vector. The shift amount is a vector of unsigned 64-bit doubleword elements in which all bits are significant, and not used modulo the destination element size. Inactive elements in the destination vector register remain unmodified. Green True True True True True 0 0 0 0 0 1 0 0 0 1 1 0 0 0 1 0 0 ASR <Zdn>.<T>, <Pg>/M, <Zdn>.<T>, <Zm>.D if !IsFeatureImplemented(FEAT_SVE) && !IsFeatureImplemented(FEAT_SME) then UNDEFINED; if size == '11' then UNDEFINED; constant integer esize = 8 << UInt(size); constant integer g = UInt(Pg); constant integer dn = UInt(Zdn); constant integer m = UInt(Zm); <Zdn> Is the name of the first source and destination scalable vector register, encoded in the "Zdn" field. <T> Is the size specifier, size <T> 00 B 01 H 10 S 11 RESERVED
<Pg> Is the name of the governing scalable predicate register P0-P7, encoded in the "Pg" field. <Zm> Is the name of the second source scalable vector register, encoded in the "Zm" field.
CheckSVEEnabled(); constant integer VL = CurrentVL; constant integer PL = VL DIV 8; constant integer elements = VL DIV esize; constant bits(PL) mask = P[g, PL]; constant bits(VL) operand1 = Z[dn, VL]; constant bits(VL) operand2 = if AnyActiveElement(mask, esize) then Z[m, VL] else Zeros(VL); bits(VL) result; for e = 0 to elements-1 if ActivePredicateElement(mask, e, esize) then constant bits(esize) element1 = Elem[operand1, e, esize]; constant bits(64) element2 = Elem[operand2, (e * esize) DIV 64, 64]; constant integer shift = Min(UInt(element2), esize); Elem[result, e, esize] = ASR(element1, shift); else Elem[result, e, esize] = Elem[operand1, e, esize]; Z[dn, VL] = result;