After AST representation, new modifications landed in
(https://github.com/llvm/llvm-project/pull/147835). ClangIR requires
some changes in how we use Clang AST to be compatible with the new
changes
This change adds support for bitfields CIR records can now contain bit
fields.
I’ve updated the `CIRGenBitFieldInfo` comment, which originally came
from the incubator and was identical to the one in OGCodeGen, to better
reflect the current implementation.
Support for bitfields in unions big-endian architectures and `get` and
`set` operations remains unimplemented and will be addressed in a future
patch.
We want to defer ABI handling until we lower to the LLVM dialect. Some
code was in place to calculate ABI handling, but the computed effects
weren't actually used.
This corresponds to the changes made in
https://github.com/llvm/clangir/pull/1604
This PR introduces support for calling functions with a scalar return
type to the upstream. This PR also includes an initial version of
`CIRGenTargetInfo` and related definitions which are essential for the
CIRGen of call ops.
Related to #132487 .
