message: CUDAArray fix various ptx typos
diff: @@ -589,7 +589,7 @@ struct CUDAArray : ArrayBase<Value_, is_mask_v<Value_>, CUDAArray<Value_>> {
  enoki_raise("Unsupported operand type");
  return T::steal(jitc_var_new_1(T::Type,
  - "cvt.rmi.$t0.$t0 $r0, $r1", 1, 1, m_index));
  + "cvt.rmi.$t0.$t1 $r0, $r1", 1, 1, m_index));
  }
  CUDAArray ceil_() const {
  @@ -606,7 +606,7 @@ struct CUDAArray : ArrayBase<Value_, is_mask_v<Value_>, CUDAArray<Value_>> {
  enoki_raise("Unsupported operand type");
  return T::steal(jitc_var_new_1(T::Type,
  - "cvt.rpi.$t0.$t0 $r0, $r1", 1, 1, m_index));
  + "cvt.rpi.$t0.$t1 $r0, $r1", 1, 1, m_index));
  }
  CUDAArray trunc_() const {
  @@ -623,7 +623,7 @@ struct CUDAArray : ArrayBase<Value_, is_mask_v<Value_>, CUDAArray<Value_>> {
  enoki_raise("Unsupported operand type");
  return T::steal(jitc_var_new_1(T::Type,
  - "cvt.rzi.$t0.$t0 $r0, $r1", 1, 1, m_index));
  + "cvt.rzi.$t0.$t1 $r0, $r1", 1, 1, m_index));
  }
  CUDAArray fmadd_(const CUDAArray &b, const CUDAArray &c) const {
  @@ -885,11 +885,11 @@ private:
  !std::is_same_v<Value, bool>
  ? "mul.wide.$t2 %rd3, $r2, $s0$n"
  "add.$t1 %rd3, %rd3, $r1$n"
  - "@$r3 ld.global.nc.$t0 $r0, [$r1]$n"
  + "@$r3 ld.global.nc.$t0 $r0, [%rd3]$n"
  "@!$r3 mov.$b0 $r0, 0"
  : "mul.wide.$t2 %rd3, $r2, $s0$n"
  "add.$t1 %rd3, %rd3, $r1$n"
  - "@$r3 ld.global.nc.u8 %w0, [$r1]$n"
  + "@$r3 ld.global.nc.u8 %w0, [%rd3]$n"
  "@!$r3 mov.u16 %w0, 0$n"
  "setp.ne.u16 $r0, %w0, 0",
  1, 1, base.index(), index.index(),
  