Some of the SVE test templates, such as SveVecBinOpVecTest, use the NextValueOp1 template variable for generating both op1 and mask inputs. If we use Helpers.getMask* to generate the mask input, this artificially constrains the possible values for op1 (i.e. just binary inputs). We should separate the logic for generating the mask value out into its own template variable, like NextValueMask. comment