stackPtrs.append(1)
			} else {
				stackPtrs.append(0)
			}
		} else {
			spill += goarch.PtrSize
		}
	}
	for i, arg := range t.InSlice() {
		stkStep := in.addArg(arg)
		if stkStep != nil {
			addTypeBits(stackPtrs, stkStep.stkOff, arg)
		} else {
			spill = align(spill, uintptr(arg.Align()))
			spill += arg.Size()
			for _, st := range in.stepsForValue(i) {
				if st.kind == abiStepPointer {

		evTable: &evTable{
			pcs: make(map[uint64]frame),
		},
		batches: make(map[ThreadID][]batch),
	}
	// Process the spilled batch.
	if spill != nil {
		g.gen = spill.gen
		if err := processBatch(g, *spill.batch); err != nil {
			return nil, nil, err
		}
		spill = nil
	}
	// Read batches one at a time until we either hit EOF or
	// the next generation.
	var spillErr error
	for {
		b, gen, err := readBatch(r)

}

// SpillRegisterArgs emits the code to spill register args into whatever
// locations the spill records specify.
func (fi *FuncInfo) SpillRegisterArgs(last *Prog, pa ProgAlloc) *Prog {
	// Spill register args.
	for _, ra := range fi.spills {
		spill := Appendp(last, pa)
		spill.As = ra.Spill
		spill.From.Type = TYPE_REG
		spill.From.Reg = ra.Reg
		spill.To = ra.Addr
		last = spill
	}
	return last

				t.addAll(spillLive[p.ID])
				for _, v := range phis {
					a := v.Args[i]
					if s.values[a.ID].needSlot {
						t.add(a.ID)
					}
					if spill := s.values[a.ID].spill; spill != nil {
						//TODO: remove?  Subsumed by SpillUse?
						t.add(spill.ID)
					}
				}
				if t.size() == len(s.live[p.ID]) {
					continue
				}
				// grow p's live set

	// is already pointing to the right place for smaller
	// arguments. The same is true on arm.

	oldParts := p.parts
	if p.tryRegAssignArg(t, 0) {
		// Account for spill space.
		//
		// TODO(mknyszek): Remove this when we no longer have
		// caller reserved spill space.
		p.dstSpill = alignUp(p.dstSpill, uintptr(t.Align_))
		p.dstSpill += t.Size_
	} else {
		// Register assignment failed.
		// Undo the work and stack assign.

}

// norace to avoid race instrumentation changing spill locations.
// nosplit to avoid preemption or morestack spilling registers.
//
//go:norace
//go:nosplit
//go:noinline
func testTracebackArgs11b(a, b, c, d int32) int {
	var x int32
	if a < 0 {
		print() // spill b in a conditional
		x = b
	} else {
		print() // spill c in a conditional
		x = c
	}
	if d < 0 { // d is always needed

		//     a. X is in a register -- then X is seen, and the spill slot is also scanned conservatively.
		//     b. X is spilled -- the spill slot is initialized, and scanned conservatively
		//     c. X is not live -- the spill slot is scanned conservatively, and it may contain X from an earlier spill.
		//  4. GC within G, transitively called from F
		//    a. X is live at call site, therefore is spilled, to its spill slot (which is live because of subsequent LoadReg).

		// This may be a problem if we start using more
		// registers. In that case, we should store registers
		// in a context object. If we pre-allocate one per P,
		// asyncPreempt can spill just a few registers to the
		// stack, then grab its context object and spill into
		// it. When it enters the runtime, it would allocate a
		// new context for the P.
		print("runtime: asyncPreemptStack=", asyncPreemptStack, "\n")

	// Transition from C ABI to Go ABI.
	PUSH_REGS_HOST_TO_ABI0()

	// Set up ABIInternal environment: g in R14, cleared X15.
	get_tls(R12)
	MOVQ	g(R12), R14
	PXOR	X15, X15

	// Reserve space for spill slots.
	NOP	SP		// disable vet stack checking
	ADJSP   $24

	// Call into the Go signal handler
	MOVQ	DI, AX	// sig
	MOVQ	SI, BX	// info
	MOVQ	DX, CX	// ctx
	CALL	·sigtrampgo<ABIInternal>(SB)

			for i := fb.cnt; i > 0; i-- {
				f := &fb.fin[i-1]

				var regs abi.RegArgs
				// The args may be passed in registers or on stack. Even for
				// the register case, we still need the spill slots.
				// TODO: revisit if we remove spill slots.
				//
				// Unfortunately because we can have an arbitrary
				// amount of returns and it would be complex to try and
				// figure out how many of those can get passed in registers,