if (rank == 1) {
    int64_t dim0 = input_ty.getDimSize(0);
    if (dim0 != ShapedType::kDynamic && dim0 != 4 && dim0 != 2)
      return op.emitOpError("requires 1D input of size 4 or size 2");
  }

  if (rank == 2) {
    int64_t dim0 = input_ty.getDimSize(0);
    if (dim0 != ShapedType::kDynamic && dim0 != 4)
      return op.emitOpError(

        x))
    (Const64 <typ.UInt64> [umagic64(c).s-1]))

// Signed divide by a negative constant.  Rewrite to divide by a positive constant.
(Div8  <t> n (Const8  [c])) && c < 0 && c != -1<<7  => (Neg8  (Div8  <t> n (Const8  <t> [-c])))
(Div16 <t> n (Const16 [c])) && c < 0 && c != -1<<15 => (Neg16 (Div16 <t> n (Const16 <t> [-c])))

		v.AddArg(v0)
		return true
	}
}
func rewriteValueMIPS64_OpDiv8(v *Value) bool {
	v_1 := v.Args[1]
	v_0 := v.Args[0]
	b := v.Block
	typ := &b.Func.Config.Types
	// match: (Div8 x y)
	// result: (Select1 (DIVV (SignExt8to64 x) (SignExt8to64 y)))
	for {
		x := v_0
		y := v_1
		v.reset(OpSelect1)
		v0 := b.NewValue0(v.Pos, OpMIPS64DIVV, types.NewTuple(typ.Int64, typ.Int64))

  // Fold pack operation if it computes the input tensor shape:
  //
  //   %shape  = tf.Shape(%arg)                    // [? x ...]
  //   %dim0   = tf.StridedSlice(%shape, 0, 1, 1)  // get unknown dim0 value
  //   %pack   = tf.Pack(dim0, ...) { axis = 0 }   // [? x ...]
  //
  // Where `...` are some statically known dimensions. In this case %pack can be

OpFoldResult PackOp::fold(FoldAdaptor) {
  // Fold pack operation if it computes the input tensor shape:
  //
  //   %shape  = tf.Shape(%arg)                    // [? x ...]
  //   %dim0   = tf.StridedSlice(%shape, 0, 1, 1)  // get unknown dim0 value
  //   %pack   = tf.Pack(dim0, ...) { axis = 0 }   // [? x ...]
  //
  // Where `...` are some statically known dimensions. In this case %pack can be

		{name: "DIVQU", argLength: 2, reg: gp11div, typ: "(UInt64,UInt64)", asm: "DIVQ", clobberFlags: true},
		{name: "DIVLU", argLength: 2, reg: gp11div, typ: "(UInt32,UInt32)", asm: "DIVL", clobberFlags: true},
		{name: "DIVWU", argLength: 2, reg: gp11div, typ: "(UInt16,UInt16)", asm: "DIVW", clobberFlags: true},

		// computes -arg0, flags set for 0-arg0.

	typ := &b.Func.Config.Types
	// match: (Div8 x y)
	// result: (DIVW (SignExt8to32 x) (SignExt8to32 y))
	for {
		x := v_0
		y := v_1
		v.reset(OpRISCV64DIVW)
		v0 := b.NewValue0(v.Pos, OpSignExt8to32, typ.Int32)
		v0.AddArg(x)
		v1 := b.NewValue0(v.Pos, OpSignExt8to32, typ.Int32)
		v1.AddArg(y)
		v.AddArg2(v0, v1)
		return true
	}
}
func rewriteValueRISCV64_OpDiv8u(v *Value) bool {

		v.AddArg2(x, y)
		return true
	}
	return false
}
func rewriteValueWasm_OpDiv8(v *Value) bool {
	v_1 := v.Args[1]
	v_0 := v.Args[0]
	b := v.Block
	typ := &b.Func.Config.Types
	// match: (Div8 x y)
	// result: (I64DivS (SignExt8to64 x) (SignExt8to64 y))
	for {
		x := v_0
		y := v_1
		v.reset(OpWasmI64DivS)
		v0 := b.NewValue0(v.Pos, OpSignExt8to64, typ.Int64)
		v0.AddArg(x)

(Select0 (Mul64uhilo x y)) => (UMULH x y)
(Select1 (Mul64uhilo x y)) => (MUL x y)

(Div64 [false] x y) => (DIV  x y)
(Div32 [false] x y) => (DIVW x y)
(Div16 [false] x y) => (DIVW (SignExt16to32 x) (SignExt16to32 y))
(Div16u x y) => (UDIVW (ZeroExt16to32 x) (ZeroExt16to32 y))
(Div8   x y) => (DIVW  (SignExt8to32  x) (SignExt8to32  y))
(Div8u  x y) => (UDIVW (ZeroExt8to32  x) (ZeroExt8to32  y))
(Div64u ...) => (UDIV  ...)

	v_0 := v.Args[0]
	b := v.Block
	typ := &b.Func.Config.Types
	// match: (Div8 x y)
	// result: (Select1 (DIV (SignExt8to32 x) (SignExt8to32 y)))
	for {
		x := v_0
		y := v_1
		v.reset(OpSelect1)
		v0 := b.NewValue0(v.Pos, OpMIPSDIV, types.NewTuple(typ.Int32, typ.Int32))
		v1 := b.NewValue0(v.Pos, OpSignExt8to32, typ.Int32)
		v1.AddArg(x)
		v2 := b.NewValue0(v.Pos, OpSignExt8to32, typ.Int32)