// of a function, before the frame has been constructed, so the standard
// addressing for the parameters will be wrong.
func SpillSlotAddr(spill ssa.Spill, baseReg int16, extraOffset int64) obj.Addr {
	return obj.Addr{
		Name:   obj.NAME_NONE,
		Type:   obj.TYPE_MEM,
		Reg:    baseReg,
		Offset: spill.Offset + extraOffset,
	}
}

var (
	BoundsCheckFunc [ssa.BoundsKindCount]*obj.LSym

			default:
				panic("unknown ABI part kind")
			}
		}
	}
	// TODO(mknyszek): Remove this when we no longer have
	// caller reserved spill space.
	frameSize = align(frameSize, goarch.PtrSize)
	frameSize += abid.spill

	// Mark pointers in registers for the return path.
	regArgs.ReturnIsPtr = abid.outRegPtrs

	if debugReflectCall {
		regArgs.Dump()
	}

	// 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)

	nodes.Append(nif)

	// Index to start copying into s.
	//   idx = newLen - len(l2)
	// We use this expression instead of oldLen because it avoids
	// a spill/restore of oldLen.
	// Note: this doesn't work optimally currently because
	// the compiler optimizer undoes this arithmetic.
	idx := ir.NewBinaryExpr(base.Pos, ir.OSUB, newLen, ir.NewUnaryExpr(base.Pos, ir.OLEN, l2))

		// any pointers we must get into the write barrier buffer still make it,
		// possibly in a different order and possibly a different (but definitely
		// more than 0) number of times.
		// In light of that, we process all the OpStoreWBs first. This minimizes
		// the amount of spill/restore code we need around the Zero/Move calls.

		//	STP.P	(ZR,ZR), 16(R16)
		//	CMP	Rarg1, R16
		//	BLE	-2(PC)
		// Note: the-end-of-the-memory may be not a valid pointer. it's a problem if it is spilled.
		// the-end-of-the-memory - 16 is with the area to zero, ok to spill.
		{
			name:      "LoweredZero",
			argLength: 3,
			reg: regInfo{
				inputs:   []regMask{buildReg("R16"), gp},
				clobbers: buildReg("R16"),
			},
			clobberFlags:   true,
			faultOnNilArg0: true,

	return uintptr(i1.x + i1.y + i2.x + i2.y + i3.x + i3.y + i4.x + i4.y + i5.x + i5.y)
}

// This test forces a GC. The idea is to have enough arguments
// that insufficient spill slots allocated (according to the ABI)
// may cause compiler-generated spills to clobber the return PC.
// Then, the GC stack scanning will catch that.
//
//go:registerparams
func sum9andGC(i1, i2, i3, i4, i5, i6, i7, i8, i9 uint32) uintptr {
	runtime.GC()

goodm:
	MOVQ	R14, AX		// AX (and arg 0) = g
	MOVQ	SI, R14		// g = g.m.g0
	get_tls(CX)		// Set G in TLS
	MOVQ	R14, g(CX)
	MOVQ	(g_sched+gobuf_sp)(R14), SP	// sp = g0.sched.sp
	PUSHQ	AX	// open up space for fn's arg spill slot
	MOVQ	0(DX), R12
	CALL	R12		// fn(g)
	// The Windows native stack unwinder incorrectly classifies the next instruction
	// as part of the function epilogue, producing a wrong call stack.

could discard <code>i</code> without saving a copy and then reload
<code>i = *p</code> just before
<code>funcs[i]()</code>.
A Go compiler must not, because the value of <code>*p</code> may have changed.
(Instead, the compiler could spill <code>i</code> to the stack.)
</p>

<p>
Not allowing a single write to write multiple values also means not using
the memory where a local variable will be written as temporary storage before the write.

	if framesize == 0 {
		return p
	}

	if ctxt.Flag_maymorestack != "" {
		// Save LR and REGCTXT
		const frameSize = 16
		p = ctxt.StartUnsafePoint(p, newprog)

		// Spill Arguments. This has to happen before we open
		// any more frame space.
		p = cursym.Func().SpillRegisterArgs(p, newprog)

		// MOV LR, -16(SP)
		p = obj.Appendp(p, newprog)
		p.As = AMOV