func avx2gatherValid(ctxt *obj.Link, p *obj.Prog) bool {
	// If any pair of the index, mask, or destination registers
	// are the same, illegal instruction trap (#UD) is triggered.
	index := regIndex(p.GetFrom3().Index)
	mask := regIndex(p.From.Reg)
	dest := regIndex(p.To.Reg)
	if dest == mask || dest == index || mask == index {
		ctxt.Diag("mask, index, and destination registers should be distinct: %v", p)
		return false
	}

		poolInfo, ok := poolsInfo[d.PoolIndex]
		if !ok {
			poolInfo = make(map[int]madmin.ErasureSetInfo)
		}
		erasureSet, ok := poolInfo[d.SetIndex]
		if !ok {
			erasureSet.ID = d.SetIndex
			cache := dataUsageCache{}
			if err := cache.load(ctx, z.serverPools[d.PoolIndex].sets[d.SetIndex], dataUsageCacheName); err == nil {
				dataUsageInfo := cache.dui(dataUsageRoot, nil)
				erasureSet.ObjectsCount = dataUsageInfo.ObjectsTotalCount