// operand combinations for a given instruction.  This is initialized from buildop.
//
// Likewise, each slice of optab is dynamically sorted using the ocmp Sort interface
// to arrange entries to minimize text size of each opcode.
//
// optab is the sorted result of combining optabBase, optabGen, and prefixableOptab.
var optab []Optab

var optabBase = []Optab{

		// we don't need to worry about partial overlaps. The two Ts must either be
		// in disjoint (nonoverlapping) memory or in exactly the same location.
		// There are 2 cases where this isn't true:
		//  1) Using unsafe you can arrange partial overlaps.
		//  2) Since Go 1.17, you can use a cast from a slice to a ptr-to-array.
		//     https://go.dev/ref/spec#Conversions_from_slice_to_array_pointer