"cmd/compile/internal/ir"
	"cmd/compile/internal/objw"
	"cmd/compile/internal/types"
	"cmd/internal/obj"
	"cmd/internal/obj/riscv"
)

func zeroRange(pp *objw.Progs, p *obj.Prog, off, cnt int64, _ *uint32) *obj.Prog {
	if cnt == 0 {
		return p
	}

	// Adjust the frame to account for LR.
	off += base.Ctxt.Arch.FixedFrameSize

	if cnt < int64(4*types.PtrSize) {

	"path/filepath"
	"time"
)

const prog = `
package main

import _ "os/signal"

func main() {
  c := make(chan int)
  c <- 1
}
`

func main() {
	dir, err := ioutil.TempDir("", "21576")
	if err != nil {
		log.Fatal(err)
	}
	defer os.RemoveAll(dir)

	file := filepath.Join(dir, "main.go")
	if err := ioutil.WriteFile(file, []byte(prog), 0655); err != nil {
		log.Fatalf("Write error %v", err)

	testenv.MustHaveGoBuild(t)
	testenv.MustInternalLink(t, false)

	dir := t.TempDir()
	hello := filepath.Join(dir, "hello.go")
	prog := `
		package main
		func main() {
			println("hello world")
		}
	`
	err := os.WriteFile(hello, []byte(prog), 0666)
	if err != nil {
		t.Fatal(err)
	}

	run := func(args ...string) string {
		return doRun(t, dir, args...)
	}

		zs,
	}
	var buf bytes.Buffer
	err = template.Must(template.New("prog").Parse(prog)).Execute(&buf, v)
	if err != nil {
		log.Fatal(err)
	}
	data, err := format.Source(buf.Bytes())
	if err != nil {
		log.Fatal(err)
	}
	err = os.WriteFile(*filename, data, 0644)
	if err != nil {
		log.Fatal(err)
	}
}

const prog = `
// Copyright 2013 The Go Authors. All rights reserved.

		case ARET:
			if p.Link != nil {
				p.Link.Mark |= LABEL
			}
		}
	}

	var mov, add obj.As

	add = AADDV
	mov = AMOVV

	var q *obj.Prog
	var q1 *obj.Prog
	autosize := int32(0)
	var p1 *obj.Prog
	var p2 *obj.Prog
	for p := c.cursym.Func().Text; p != nil; p = p.Link {
		o := p.As
		switch o {
		case obj.ATEXT:
			autosize = int32(textstksiz)

// Ensure that runtime traceback does not infinite loop for
// the testcase below.

package main

import (
	"bytes"
	"io/ioutil"
	"log"
	"os"
	"os/exec"
	"path/filepath"
)

const prog = `

package main

import "context"

var gpi *int

type nAO struct {
	eE bool
}

type NAO func(*nAO)

func WEA() NAO {
	return func(o *nAO) { o.eE = true }
}

type R struct {

// Copyright 2022 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package main

import (
	"os"
	"prog/dep"
)

//go:noinline
func fifth() {
	println("hubba")
}

//go:noinline
func sixth() {
	println("wha?")
}

func main() {
	println(dep.Dep1())
	if len(os.Args) > 1 {
		fifth()
	} else {
		sixth()
	}

// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package obj

// go-specific code shared across loaders (5l, 6l, 8l).

func Nopout(p *Prog) {
	p.As = ANOP
	p.Scond = 0
	p.From = Addr{}
	p.RestArgs = nil
	p.Reg = 0
	p.To = Addr{}

	capNames := re.CapNames()

	re = re.Simplify()
	prog, err := syntax.Compile(re)
	if err != nil {
		return nil, err
	}
	matchcap := prog.NumCap
	if matchcap < 2 {
		matchcap = 2
	}
	regexp := &Regexp{
		expr:        expr,
		prog:        prog,
		onepass:     compileOnePass(prog),
		numSubexp:   maxCap,
		subexpNames: capNames,
		cond:        prog.StartCond(),
		longest:     longest,

package obj

// Code and data passes.

// brloop returns the ultimate destination of the series of unconditional jumps beginning at p.
// In the case of an infinite loop, brloop returns nil.
func brloop(p *Prog) *Prog {
	c := 0
	for q := p; q != nil; q = q.To.Target() {
		if q.As != AJMP || q.To.Target() == nil {
			return q
		}
		c++
		if c >= 5000 {
			// infinite loop
			return nil
		}
	}