v := b.Func.newValue(op, t, b, pos)
	v.AuxInt = 0
	v.Aux = aux
	v.Args = v.argstorage[:0]
	return v
}

// NewValue0IA returns a new value in the block with no arguments and both an auxint and aux values.
func (b *Block) NewValue0IA(pos src.XPos, op Op, t *types.Type, auxint int64, aux Aux) *Value {
	v := b.Func.newValue(op, t, b, pos)
	v.AuxInt = auxint
	v.Aux = aux
	v.Args = v.argstorage[:0]

	}
}

// clobberPtr generates a clobber of the pointer at offset offset in v.
// The clobber instruction is added at the end of b.
func clobberPtr(b *ssa.Block, v *ir.Name, offset int64) {
	b.NewValue0IA(src.NoXPos, ssa.OpClobber, types.TypeVoid, offset, v)
}

func (lv *liveness) showlive(v *ssa.Value, live bitvec.BitVec) {