changed = true
			}
		}

		if !changed {
			break
		}
	}
	if s.f.pass.debug > stackDebug {
		for _, b := range s.f.Blocks {
			fmt.Printf("stacklive %s %v\n", b, s.live[b.ID])
		}
	}
}

func (f *Func) getHome(vid ID) Location {
	if int(vid) >= len(f.RegAlloc) {
		return nil
	}
	return f.RegAlloc[vid]
}

	s.placeSpills()

	// Anything that didn't get a register gets a stack location here.
	// (StoreReg, stack-based phis, inputs, ...)
	stacklive := stackalloc(s.f, s.spillLive)

	// Fix up all merge edges.
	s.shuffle(stacklive)

	// Erase any copies we never used.
	// Also, an unused copy might be the only use of another copy,
	// so continue erasing until we reach a fixed point.
	for {

		writeErrStr(failthreadcreate)
		exit(1)
	}

	// Find out OS stack size for our own stack guard.
	var stacksize uintptr
	if pthread_attr_getstacksize(&attr, &stacksize) != 0 {
		writeErrStr(failthreadcreate)
		exit(1)
	}
	mp.g0.stack.hi = stacksize // for mstart

	// Tell the pthread library we won't join with this thread.
	if pthread_attr_setdetachstate(&attr, _PTHREAD_CREATE_DETACHED) != 0 {

				"\"stack\":\".*\"}",
			json:       true,
			caller:     true,
			stackLevel: DebugLevel,
		},
		{
			f: func() { Info("Hello") },
			pat: "{\"level\":\"info\",\"time\":\"" + timePattern + "\",\"caller\":\"log/default_test.go:.*\",\"msg\":\"Hello\"," +
				"\"stack\":\".*\"}",
			json:       true,
			caller:     true,
			stackLevel: DebugLevel,
		},
		{
			f: func() { Warn("Hello") },

			json:       true,
			caller:     true,
			stackLevel: DebugLevel,
		},
		{
			f: func() { s.Info("Hello") },
			pat: "{\"level\":\"info\",\"time\":\"" + timePattern + "\",\"scope\":\"testScope\",\"caller\":\"log/scope_test.go:.*\",\"msg\":\"Hello\"," +
				"\"stack\":\".*\"}",
			json:       true,
			caller:     true,
			stackLevel: DebugLevel,
		},
		{
			f: func() { s.Warn("Hello") },

	if err != 0 {
		writeErrStr(failthreadcreate)
		exit(1)
	}

	// Find out OS stack size for our own stack guard.
	var stacksize uintptr
	if pthread_attr_getstacksize(&attr, &stacksize) != 0 {
		writeErrStr(failthreadcreate)
		exit(1)
	}
	mp.g0.stack.hi = stacksize // for mstart

	// Tell the pthread library we won't join with this thread.
	if pthread_attr_setdetachstate(&attr, _PTHREAD_CREATE_DETACHED) != 0 {

		throw("newosproc")
	}
}

// Version of newosproc that doesn't require a valid G.
//
//go:nosplit
func newosproc0(stacksize uintptr, fn unsafe.Pointer) {
	stack := sysAlloc(stacksize, &memstats.stacks_sys)
	if stack == nil {
		writeErrStr(failallocatestack)
		exit(1)
	}
	// This code "knows" it's being called once from the library

	MOVD	$_rt0_arm64_linux_lib_go(SB), R0
	MOVD	$0, R1
	SUB	$16, RSP		// reserve 16 bytes for sp-8 where fp may be saved.
	BL	(R4)
	ADD	$16, RSP
	B	restore

nocgo:
	MOVD	$0x800000, R0                     // stacksize = 8192KB
	MOVD	$_rt0_arm64_linux_lib_go(SB), R1
	MOVD	R0, 8(RSP)
	MOVD	R1, 16(RSP)
	MOVD	$runtime·newosproc0(SB),R4
	BL	(R4)

restore:
	// Restore callee-save registers.
	RESTORE_R19_TO_R28(24)

	MOVD	$_rt0_arm64_freebsd_lib_go(SB), R0
	MOVD	$0, R1
	SUB	$16, RSP	// reserve 16 bytes for sp-8 where fp may be saved.
	BL	(R4)
	ADD	$16, RSP
	B	restore

nocgo:
	MOVD	$0x800000, R0                     // stacksize = 8192KB
	MOVD	$_rt0_arm64_freebsd_lib_go(SB), R1
	MOVD	R0, 8(RSP)
	MOVD	R1, 16(RSP)
	MOVD	$runtime·newosproc0(SB),R4
	BL	(R4)

restore:
	// Restore callee-save registers.
	RESTORE_R19_TO_R28(24)

		return
	}

	stacksize := text.To.Offset
	if stacksize == -8 {
		// Historical way to mark NOFRAME.
		text.From.Sym.Set(obj.AttrNoFrame, true)
		stacksize = 0
	}
	if stacksize < 0 {
		ctxt.Diag("negative frame size %d - did you mean NOFRAME?", stacksize)
	}
	if text.From.Sym.NoFrame() {
		if stacksize != 0 {