Streaming circuits from QASM

[Maxschwarz55]

I was wondering if there is any way I can pipe LLI instructions from a QASM circuit into an instance of the compiler. For example, I tried a command like this:
/liblsqecc/build/lsqecc_slicer \ -q -i "${CIRCUIT_NAME}.qasm" \ -l "${ARCH_NAME}.txt" \ --printlli before \ | /liblsqecc/build/lsqecc_slicer \ -l "${ARCH_NAME}.txt" \ --disttime 1 \ --nostagger \ --local \ -P wave \ --noslices \ -o "${OUT_PATH}" \ -f stats

My hope was to convert QASM instructions to LLI instructions on the left side of the pipe, and then run the slicer on those directly. Trying this results in the following error message:
terminate called after throwing an instance of 'std::runtime_error' what(): First instruction must be qubit declaration Aborted (core dumped)

Any advice on how to do something like this?

[mitjarislakki]

--printlli doesn't include DeclareLogicalQubitPatcheswhich is required as the first instruction for LLI input. I don't know the original intention for the behavior, but probably possible to add it without too much trouble.

[alexandrupaler]

thank you for this issue.

@Maxschwarz55 can you please provide the circuit and the layout you used to see the exception?

[Maxschwarz55]

Thank you,

The layout is:

rMrMrMrMrMrMrMrMrMrMrMrMr
rQrQrQrQrQrQrQrQrQrQrQrQr
MrrrrrrrrrrrrrrrrrrrrrrrM
rQrQrQrQrQrQrQrQrQrQrQrQr
rMrMrMrMrMrMrMrMrMrMrMrMr

and the circuit is here: https://gist.github.com/Maxschwarz55/d7875a48756150236244be83d1f86836

I piped the output of the first command to a file to see what the LLI instructions looked like. The output is here: https://gist.github.com/Maxschwarz55/8eba1e31e82288c7953040cee1d88f08

I see that there is no qubit declaration line. However, I am worried about the qubit IDs here. There are 832 qubits declared here, but the original qasm file has only 24. I understand this is because of the nature of LLIs in that they are composed of multiple gate level operations. This is going to exceed the layout capacity correct? Should I instead create a new layout for these 832 qubits instead, or is there a better way to do this?

As a note, I am doing this to see if parsing LLIs directly is any faster than QASM.