// sure that we don't end up doing O(n^2) work
	// for a chain of n copies.
	for v != w {
		x := v.Args[0]
		v.SetArg(0, w)
		v = x
	}
	return w
}

// copyelimValue ensures that no args of v are copies.
func copyelimValue(v *Value) {
	for i, a := range v.Args {
		if a.Op == OpCopy {
			v.SetArg(i, copySource(a))
		}
	}
}

// phielim eliminates redundant phi values from f.

            return host;
        }
    }

    protected String toAscii(final String host) {
        return IDN.toASCII(decode(host), flag);
    }

    public void setFlag(final int flag) {
        this.flag = flag;
    }

    public void setEncoding(final String encoding) {
        this.encoding = encoding;
    }

func gcWriteBarrierSI()
func gcWriteBarrierR8()
func gcWriteBarrierR9()

// stackcheck checks that SP is in range [g->stack.lo, g->stack.hi).
func stackcheck()

// Called from assembly only; declared for go vet.
func settls() // argument in DI

// Retpolines, used by -spectre=ret flag in cmd/asm, cmd/compile.
func retpolineAX()
func retpolineCX()
func retpolineDX()
func retpolineBX()
func retpolineBP()
func retpolineSI()

	// function.
	*(*uint64)(unsafe.Pointer(uintptr(sp - goarch.PtrSize))) = c.r29()

	pc := gp.sigpc

	if shouldPushSigpanic(gp, pc, uintptr(c.lr())) {
		// Make it look the like faulting PC called sigpanic.
		c.set_lr(uint64(pc))
	}

	// In case we are panicking from external C code
	c.set_r28(uint64(uintptr(unsafe.Pointer(gp))))
	c.set_pc(uint64(abi.FuncPCABIInternal(sigpanic)))
}

		// it may hit stack split that is not expected here.
		if gp != nil {
			setg(nil)
		}
		badsignal(uintptr(sig), c)
		// Restore g
		if gp != nil {
			setg(gp)
		}
		return
	}

	setg(gp.m.gsignal)

	// If some non-Go code called sigaltstack, adjust.
	var gsignalStack gsignalStack

	return p[k]
}

func (p Params) GetWellKnown(k WellKnown) any {
	return p[k.String()]
}

func (p Params) Set(k string, v any) Params {
	p[k] = v
	return p
}

func (p Params) SetAll(other Params) Params {
	for k, v := range other {
		p[k] = v
	}
	return p
}

func (p Params) SetAllNoOverwrite(other Params) Params {
	for k, v := range other {
		if !p.Contains(k) {
			p[k] = v
		}

			for i, a := range v.Args {
				if !a.Type.IsFlags() {
					continue
				}
				if a == flag {
					continue
				}
				// Recalculate a
				c := copyFlags(a, b)
				// Update v.
				v.SetArg(i, c)
				// Remember the most-recently computed flag value.
				flag = a
			}
			// Issue v.
			b.Values = append(b.Values, v)
			if v.clobbersFlags() {
				flag = nil
			}
			if v.Type.IsFlags() {

func (c *context) lr() uintptr { return uintptr(c.lrr) }

func (c *context) set_ip(x uintptr) { c.pc = uint32(x) }
func (c *context) set_sp(x uintptr) { c.spr = uint32(x) }
func (c *context) set_lr(x uintptr) { c.lrr = uint32(x) }

// arm does not have frame pointer register.
func (c *context) set_fp(x uintptr) {}

func prepareContextForSigResume(c *context) {
	c.r0 = c.spr
	c.r1 = c.pc
}

func (c *context) sp() uintptr { return uintptr(c.esp) }

// 386 does not have link register, so this returns 0.
func (c *context) lr() uintptr      { return 0 }
func (c *context) set_lr(x uintptr) {}

func (c *context) set_ip(x uintptr) { c.eip = uint32(x) }
func (c *context) set_sp(x uintptr) { c.esp = uint32(x) }

// 386 does not have frame pointer register.
func (c *context) set_fp(x uintptr) {}

func (t Tag) RegionalTag() Tag {
	rt := Tag{language: t.locale, locale: t.locale}
	if t.full == nil {
		return rt
	}
	b := language.Builder{}
	tag := t.Tag()
	// tag, _ = tag.SetTypeForKey("rg", "")
	b.SetTag(t.locale.Tag())
	if v := tag.Variants(); v != "" {
		for _, v := range strings.Split(v, "-") {
			b.AddVariant(v)
		}
	}
	for _, e := range tag.Extensions() {
		b.AddExt(e)
	}
	return t
}