Failing to build circuits

[NickVolynkin]

Recent changes have disabled building circuits. The resulting file has the extension .pc (not .bc or .ll).

Log fragments:

$ cmake -D CIRCUIT_ASSEMBLY_OUTPUT ..
...
CMake Warning:
  Manually-specified variables were not used by the project:

    CIRCUIT_ASSEMBLY_OUTPUT
...
$ make zkllvm_template
...
[100%] Building CXX object src/CMakeFiles/zkllvm_template.dir/main.cpp.o
/opt/zkllvm-template/src/main.cpp:17:76: warning: 'circuit' attribute directive ignored [-Wattributes]
   17 |                              typename pallas::base_field_type::value_type b) {
      |                                                                            ^
In file included from /opt/zkllvm-template/libs/crypto3/libs/multiprecision/include/nil/crypto3/multiprecision/modular/modular_functions_fixed.hpp:15,
                 from /opt/zkllvm-template/libs/crypto3/libs/multiprecision/include/nil/crypto3/multiprecision/cpp_int/eval_jacobi.hpp:15,
                 from /opt/zkllvm-template/libs/crypto3/libs/multiprecision/include/nil/crypto3/multiprecision/cpp_int.hpp:2772,
                 from /opt/zkllvm-template/libs/crypto3/libs/algebra/include/nil/crypto3/algebra/fields/detail/exponentiation.hpp:33,
                 from /opt/zkllvm-template/libs/crypto3/libs/algebra/include/nil/crypto3/algebra/fields/detail/element/fp.hpp:29,
                 from /opt/zkllvm-template/libs/crypto3/libs/algebra/include/nil/crypto3/algebra/fields/pallas/base_field.hpp:29,
                 from /opt/zkllvm-template/libs/crypto3/libs/algebra/include/nil/crypto3/algebra/curves/detail/pallas/types.hpp:29,
                 from /opt/zkllvm-template/libs/crypto3/libs/algebra/include/nil/crypto3/algebra/curves/pallas.hpp:29,
                 from /opt/zkllvm-template/src/main.cpp:1:
/opt/zkllvm-template/libs/crypto3/libs/multiprecision/include/nil/crypto3/multiprecision/modular/asm_functions.hpp: In function 'bool nil::crypto3::multiprecision::backends::reduce_limb_asm(const size_t&, Limb1*, const Limb2*, const Limb3&) [with Limb1 = long long unsigned int; Limb2 = long long unsigned int; Limb3 = __int128 unsigned]':
/opt/zkllvm-template/libs/crypto3/libs/multiprecision/include/nil/crypto3/multiprecision/modular/asm_functions.hpp:95:17: warning: unsupported size for integer register
   95 |                 }
      |                 ^
[100%] Built target zkllvm_template