TBX Programmable table lookup in single vector table (merging) Reads each element of the second source (index) vector and uses its value to select an indexed element from a table of elements in the first source vector, and places the indexed element in the destination vector element corresponding to the index vector element. If an index value is greater than or equal to the number of vector elements then the corresponding destination vector element is left unchanged. Since the index values can select any element in a vector this operation is not naturally vector length agnostic. Green False True 0 0 0 0 0 1 0 1 1 0 0 1 0 1 1 TBX <Zd>.<T>, <Zn>.<T>, <Zm>.<T> if !IsFeatureImplemented(FEAT_SVE2) && !IsFeatureImplemented(FEAT_SME) then UNDEFINED; constant integer esize = 8 << UInt(size); constant integer n = UInt(Zn); constant integer m = UInt(Zm); constant integer d = UInt(Zd); <Zd> Is the name of the destination scalable vector register, encoded in the "Zd" field. <T> Is the size specifier, size <T> 00 B 01 H 10 S 11 D <Zn> Is the name of the first source scalable vector register, encoded in the "Zn" 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(VL) operand1 = Z[n, VL]; constant bits(VL) operand2 = Z[m, VL]; bits(VL) result = Z[d, VL]; for e = 0 to elements-1 constant integer element2 = UInt(Elem[operand2, e, esize]); if element2 < elements then Elem[result, e, esize] = Elem[operand1, element2, esize]; Z[d, VL] = result;