Plugin libraries that use coroutines can do so right now, however, to
provide their own ABI they need to be able to use various headers, some
of which such are required (such as the ABI header). This change exposes
the coro utils and required headers by moving them to
include/llvm/Transforms/Coroutines. My experience with our out-of-tree
plugin ABI has been that at least these headers are needed. The headers
moved are:
* ABI.h (ABI object)
* CoroInstr.h (helpers)
* Coroshape.h (Shape object)
* MaterializationUtils.h (helpers)
* SpillingUtils.h (helpers)
* SuspendCrossingInfo.h (analysis)
This has no code changes other than those required to move the headers
and these are:
* include guard name changes
* include path changes
* minor clang-format induced changes
* removal of LLVM_LIBRARY_VISIBILITY
* Move materialization out of CoroFrame to MaterializationUtils.h
* Move spill related utilities that were used by materialization to
SpillUtils
* Move isSuspendBlock (needed by materialization) to CoroInternal
See RFC for more info:
https://discourse.llvm.org/t/rfc-abi-objects-for-coroutines/81057
