c.size += len(p)
	return len(p), nil
}

// nodeSize determines the size of n in chars after formatting.
// The result is <= maxSize if the node fits on one line with at
// most maxSize chars and the formatted output doesn't contain
// any control chars. Otherwise, the result is > maxSize.
func (p *printer) nodeSize(n ast.Node, maxSize int) (size int) {
	// nodeSize invokes the printer, which may invoke nodeSize

	// At entry, r12 holds the address of the symbol resolver stub
	// for the target routine and the argument registers hold the
	// arguments for the target routine.
	//
	// PC-rel offsets are computed once the final codesize of the
	// resolver is known.
	//
	// This stub is PIC, so first get the PC of label 1 into r11.
	glink.AddUint32(ctxt.Arch, OP_MFLR_R0) // mflr r0
	glink.AddUint32(ctxt.Arch, OP_BCL_NIA) // bcl 20,31,1f