long double Boost Python conversion assembly output

gistfile1.txt

        .section        .text._Z11extract_fooIeET_N5boost6python3api6objectE,"axG",@progbits,long double extract_foo<long double>(boost::python::api::object),comdat
        .p2align 4
        .weak   long double extract_foo<long double>(boost::python::api::object)
        .type   long double extract_foo<long double>(boost::python::api::object), @function
long double extract_foo<long double>(boost::python::api::object):
.LFB10151:
        .cfi_startproc
        .cfi_personality 0x9b,DW.ref.__gxx_personality_v0
        .cfi_lsda 0x1b,.LLSDA10151
        endbr64
        push    rbx
        .cfi_def_cfa_offset 16
        .cfi_offset 3, -16
        sub     rsp, 64
        .cfi_def_cfa_offset 80
        mov     rdi, QWORD PTR [rdi]
        mov     rsi, QWORD PTR boost::python::converter::detail::registered_base<long double const volatile&>::converters[rip]
        mov     rax, QWORD PTR fs:40
        mov     QWORD PTR 56[rsp], rax
        xor     eax, eax
        lea     rbx, 32[rsp]
        mov     QWORD PTR [rsp], rdi
.LEHB0:
        call    boost::python::converter::rvalue_from_python_stage1(_object*, boost::python::converter::registration const&)@PLT
.LEHE0:
        mov     QWORD PTR 16[rsp], rax
        mov     QWORD PTR 24[rsp], rdx
        cmp     rax, rbx
        je      .L15
        mov     rdx, QWORD PTR boost::python::converter::detail::registered_base<long double const volatile&>::converters[rip]
        mov     rdi, QWORD PTR [rsp]
        lea     rsi, 16[rsp]
.LEHB1:
        call    boost::python::converter::rvalue_from_python_stage2(_object*, boost::python::converter::rvalue_from_python_stage1_data&, boost::python::converter::registration const&)@PLT
.LEHE1:
        fld     TBYTE PTR [rax]
        cmp     QWORD PTR 16[rsp], rbx
        je      .L19
.L14:
        mov     rax, QWORD PTR 56[rsp]
        xor     rax, QWORD PTR fs:40
        jne     .L23
        add     rsp, 64
        .cfi_remember_state
        .cfi_def_cfa_offset 16
        pop     rbx
        .cfi_def_cfa_offset 8
        ret
        .p2align 4,,10
        .p2align 3
.L15:
        .cfi_restore_state
        fld     TBYTE PTR 32[rsp]
.L19:
        fld     TBYTE PTR 32[rsp]
        fstp    st(0)
        jmp     .L14
.L23:
        fstp    st(0)
        call    __stack_chk_fail@PLT
.L21:
        endbr64
        mov     rdi, rax
.L17:
        cmp     QWORD PTR 16[rsp], rbx
        jne     .L18
        fld     TBYTE PTR 32[rsp]
        fstp    st(0)
.L18:
.LEHB2:
        call    _Unwind_Resume@PLT
.LEHE2:
        .cfi_endproc