// clobber generates code to clobber pointer slots in all dead variables
// (those not marked in live). Clobbering instructions are added to the end
// of b.Values.
func clobber(lv *liveness, b *ssa.Block, live bitvec.BitVec) {
	for i, n := range lv.vars {
		if !live.Get(int32(i)) && !n.Addrtaken() && !n.OpenDeferSlot() && !n.IsOutputParamHeapAddr() {
			// Don't clobber stack objects (address-taken). They are
			// tracked dynamically.

(MFVSRD (FMOVDconst [c])) => (MOVDconst [int64(math.Float64bits(c))])

(MTVSRD x:(MOVDload [off] {sym} ptr mem)) && x.Uses == 1 && clobber(x) => @x.Block (FMOVDload [off] {sym} ptr mem)
(MFVSRD x:(FMOVDload [off] {sym} ptr mem)) && x.Uses == 1 && clobber(x) => @x.Block (MOVDload [off] {sym} ptr mem)

// Rules for MOV* or FMOV* ops determine when indexed (MOV*loadidx or MOV*storeidx)

	return nil // too far away
}

// clobber invalidates values. Returns true.
// clobber is used by rewrite rules to:
//
//	A) make sure the values are really dead and never used again.
//	B) decrement use counts of the values' args.
func clobber(vv ...*Value) bool {
	for _, v := range vv {
		v.reset(OpInvalid)
		// Note: leave v.Block intact.  The Block field is used after clobber.
	}
	return true
}

	// cond: buildcfg.GOPPC64 >= 9 && l.Uses == 1 && clobber(l)
	// result: (MADDLD x y z)
	for {
		for _i0 := 0; _i0 <= 1; _i0, v_0, v_1 = _i0+1, v_1, v_0 {
			l := v_0
			if l.Op != OpPPC64MULLD {
				continue
			}
			y := l.Args[1]
			x := l.Args[0]
			z := v_1
			if !(buildcfg.GOPPC64 >= 9 && l.Uses == 1 && clobber(l)) {
				continue
			}
			v.reset(OpPPC64MADDLD)

	}

	// Handle any register clobbering. Call operations, for example,
	// clobber all registers even though they don't explicitly write to
	// them.
	clobbers := uint64(opcodeTable[v.Op].reg.clobbers)
	for {
		if clobbers == 0 {
			break
		}
		reg := uint8(bits.TrailingZeros64(clobbers))
		clobbers &^= 1 << reg

		for _, slot := range locs.registers[reg] {
			if state.loggingLevel > 1 {

	testKube "istio.io/istio/pkg/test/kube"
	"istio.io/istio/pkg/test/scopes"
)

const (
	serviceName = "prometheus"
	appName     = "prometheus"
)

var (
	_ Instance  = &kubeComponent{}
	_ io.Closer = &kubeComponent{}
)

type kubeComponent struct {
	id resource.ID

	api       map[string]prometheusApiV1.API
	forwarder map[string]istioKube.PortForwarder
	clusters  cluster.Clusters
}

process emphasis

	walk forward in list to find a closer.
	walk back to find first potential matching opener.
	if found:
		strong for length >= 2
		insert node
		drop delimiters between opener and closer
		remove 1 or 2 from open/close count, removing if now empty
		if closing has some left, go around again on this node
	if not:

		ingr := newIngress(i.ctx, ingressConfig{
			Cluster:       c,
			Service:       service,
			LabelSelector: labelSelector,
		})
		if closer, ok := ingr.(io.Closer); ok {
			i.ctx.Cleanup(func() { _ = closer.Close() })
		}
		i.ingress[c.Name()][labelSelector] = ingr
	}
	return i.ingress[c.Name()][labelSelector]
}

	"istio.io/istio/pkg/test/framework/resource"
	testKube "istio.io/istio/pkg/test/kube"
	"istio.io/istio/pkg/test/scopes"
	"istio.io/istio/pkg/test/util/retry"
)

var _ io.Closer = &kubeComponent{}

type kubeComponent struct {
	id resource.ID

	ns       namespace.Instance
	inbound  istioKube.PortForwarder
	outbound istioKube.PortForwarder
	pod      v1.Pod
}

		for _, mf := range mfs {
			if err := enc.Encode(mf); err != nil {
				// client may disconnect for any reasons
				// we do not have to log this.
				return
			}
		}
		if closer, ok := enc.(expfmt.Closer); ok {
			closer.Close()
		}
	})
}

func metricsBucketHandler() http.Handler {
	return metricsHTTPHandler(bucketCollector, "handler.MetricsBucket")
}