[core] Separate compilation, supporting C++ host side function references. #2216
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amccaskey
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Sep 18, 2024
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amccaskey
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Sep 18, 2024
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amccaskey
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…nces. These changes add a new wrapper class to support interfacing between kernels. Kernels on the device side have their own names and calling conventions. Meanwhile, the C++ host code can capture references to these kernels. The C++ compiler assumes it can erase the functions completely and degenerate any reference to them as a pointer. Furthermore, it may inline or wrap this code in a thicket of template instantiations. But in order to be useful on the device side, the CUDA-Q runtime must be able to determine which kernel was wrapped in C++ code, lookup the device side code, and "link-time" optimize these calls, doing calling convention conversions, etc. Furthermore, what must be done is flavored by the execution environment. Update the call paths of hybridLaunchKernel so that we can use the new argument synthesis instead of falling back on and failing with quake synthesis. Add another deduction guide test (when using cudaq::sample). Mark all tests that use deduction guides as C++ 20 (since C++ 17 doesn't have guides). Add a hacky workaround for python. Python needs to use the new argument synthesis, but it is still using the old quake synthesis compiler pass. Attempt to add split-file to installed stuff. [Doesn't work! Why not?] Add guards to tests since some phases of the CI don't have the necessary test utilities properly installed. Mark failing state tests as UNSUPPORTED for now. These should be fixed when the state handling using new argument synthesis is fully implemented. Fix bug when there are multiple callables.
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annagrin
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Sep 27, 2024
synthesis to be used to get the expected error. Reenable qvector_init_from_state.cpp. Hopefully this one was a red herring chasing its own CI tail.
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These changes add a new wrapper class to support interfacing between kernels. Kernels on the device side have their own names and calling conventions. Meanwhile, the C++ host code can capture references to these kernels. The C++ compiler assumes it can erase the functions completely and degenerate any reference to them as a pointer. Furthermore, it may inline or wrap this code in a thicket of template instantiations. But in order to be useful on the device side, the CUDA-Q runtime must be able to determine which kernel was wrapped in C++ code, lookup the device side code, and "link-time" optimize these calls, doing calling convention conversions, etc. Furthermore, what must be done is flavored by the execution environment.
Update the call paths of hybridLaunchKernel so that we can use the new argument synthesis instead of falling back on and failing with quake synthesis A couple of init state tests are marked XFAIL as they don't seem to behave with the new argument synthesis..