This adds the infrastructure for handling x86-specific builtin calls. It
does not add any actual handling, just the code structure and a large
switch statement containing all of the builtins that will eventually
need to be handled. Target-specific builtins for other targets will be
added later.
This improves the diagnostic emitted when `errorNYI` is called for
missing builtin calls so that the builtin being called is displayed in
the diagnostic.
This PR adds new `FuncOp` attributes (`coroutine` and `builtin`) and
begins the implementation of the `emitCoroutineBody` function. Feature
markers were also added for guidance in future PRs.
This patch fixes a regression introduced by #153819. The evaluation
order of the arguments to `emitVAStart` is unspecified, but the test
requires the arguments to be evaluated in left-to-right order.
It's a bit strange that the pre-merge checks did not catch this. The
tests failed on my local machine, which runs Fedora 42 with gcc 15.2.1 .
This adds ReturnAddrOp and FrameAddrOp that represent
__builtin_return_address and __builtin_frame_address and the respective
lowering to LLVM parts.
---------
Co-authored-by: Andy Kaylor <akaylor@nvidia.com>
This patch adds the `cir.ffs` operation which corresponds to the
`__builtin_ffs` family of builtin functions.
This operation was not included in the previous PRs because the call to
`__builtin_ffs` would be transformed into a library call to `ffs`. At
the time of authoring this patch, this behavior has been changed and now
we can properly lower calls to `__builtin_ffs` to `cir.ffs`.
This patch adds support for the following two builtin functions:
- `__builtin_bswap`, represented by the `cir.byte_swap` operation.
- `__builtin_bitreverse`, represented by the `cir.bit.reverse`
operation.
This patch adds CIR support for the following families of bit
manipulation builtin functions:
- `__builtin_clrsb`, represented by the `cir.bit.clrsb` operation
- `__builtin_ctz`, represented by the `cir.bit.clz` operation
- `__builtin_clz`, represented by the `cir.bit.ctz` operation
- `__builtin_parity`, represented by the `cir.bit.parity` operation
- `__builtin_popcount`, represented by the `cir.bit.popcnt` operation
The `__builtin_ffs` builtin function is not included in this patch
because the current CIRGen would emit it as a library call to `@ffs`.
This patch upstreams support for builtins that map to a standard library
function. Examples would be abort() and printf().
It also fixes a minor issue with the errorNYI for all remaining
unimplemented builtins using the mlir::Location instead of the clang AST
SourceLocation.
This patch adds all bits required to implement builtin function calls to
ClangIR. It doesn't actually implement any of the builtins except those
that fold to a constant ahead of CodeGen
(`__builtin_is_constant_evaluated()` being one example).
