vexW1  = 1 << 7
	// M field - 5 bits, but mostly reserved; we can store up to 3
	vex0F   = 1 << 3
	vex0F38 = 2 << 3
	vex0F3A = 3 << 3
)

var ycover [Ymax * Ymax]uint8

var reg [MAXREG]int

var regrex [MAXREG + 1]int

var ynone = []ytab{
	{Zlit, 1, argList{}},
}

var ytext = []ytab{
	{Zpseudo, 0, argList{Ymb, Ytextsize}},
	{Zpseudo, 1, argList{Ymb, Yi32, Ytextsize}},
}