{as: ABR, a6: C_LR, type_: 18, size: 4},                                          // blr
	{as: ABR, a6: C_CTR, type_: 18, size: 4},                                         // bctr
	{as: ABC, a1: C_U15CON, a2: C_CRBIT, a6: C_BRA, type_: 16, size: 4},              // bc bo, bi, label
	{as: ABC, a1: C_U15CON, a2: C_CRBIT, a6: C_LR, type_: 18, size: 4},               // bclr bo, bi

		} else if p.As == ACSG {
			zRSY(op_CSG, uint32(p.From.Reg), uint32(p.Reg), uint32(p.To.Reg), uint32(v), asm)
		}

	case 80: // sync
		zRR(op_BCR, 14, 0, asm) // fast-BCR-serialization

	case 81: // float to fixed and fixed to float moves (no conversion)
		switch p.As {
		case ALDGR:
			zRRE(op_LDGR, uint32(p.To.Reg), uint32(p.From.Reg), asm)
		case ALGDR:

		return 1<<31 | 5<<26
	}

	c.ctxt.Diag("%v: bad bra %v", p, a)
	return 0
}

func (c *ctxt7) opbrr(p *obj.Prog, a obj.As) uint32 {
	switch a {
	case ABL:
		return OPBLR(1) /* BLR */

	case AB:
		return OPBLR(0) /* BR */

	case obj.ARET:
		return OPBLR(2) /* RET */
	}

	c.ctxt.Diag("%v: bad brr %v", p, a)
	return 0
}