ld = ppc64.ALWAR
			st = ppc64.ASTWCCC
		}
		r0 := v.Args[0].Reg()
		r1 := v.Args[1].Reg()
		// LWSYNC - Assuming shared data not write-through-required nor
		// caching-inhibited. See Appendix B.2.2.2 in the ISA 2.07b.
		plwsync := s.Prog(ppc64.ALWSYNC)
		plwsync.To.Type = obj.TYPE_NONE
		// LBAR or LWAR
		p := s.Prog(ld)
		p.From.Type = obj.TYPE_MEM
		p.From.Reg = r0
		p.To.Type = obj.TYPE_REG

	SYNC                            // 7c0004ac
	ISYNC                           // 4c00012c
	LWSYNC                          // 7c2004ac
	EIEIO                           // 7c0006ac
	PTESYNC                         // 7c4004ac
	TLBIE R3                        // 7c001a64
	TLBIEL R3                       // 7c001a24
	TLBSYNC                         // 7c00046c
	HRFID                           // 4c000224