- In Sema, when encountering Decls with function effects needing
verification, add them to a vector, DeclsWithEffectsToVerify.
- Update AST serialization to include DeclsWithEffectsToVerify.
- In AnalysisBasedWarnings, use DeclsWithEffectsToVerify as a work
queue, verifying functions with declared effects, and inferring (when
permitted and necessary) whether their callees have effects.
---------
Co-authored-by: Doug Wyatt <dwyatt@apple.com>
Co-authored-by: Sirraide <aeternalmail@gmail.com>
Co-authored-by: Erich Keane <ekeane@nvidia.com>
Introduce `nonblocking` and `nonallocating` attributes. RFC is here:
https://discourse.llvm.org/t/rfc-nolock-and-noalloc-attributes/76837
This PR introduces the attributes, with some changes in Sema to deal
with them as extensions to function (proto)types.
There are some basic type checks, most importantly, a warning when
trying to spoof the attribute (implicitly convert a function without the
attribute to one that has it).
A second, follow-on pull request will introduce new caller/callee
verification.
---------
Co-authored-by: Doug Wyatt <dwyatt@apple.com>
Co-authored-by: Shafik Yaghmour <shafik.yaghmour@intel.com>
Co-authored-by: Aaron Ballman <aaron@aaronballman.com>
Co-authored-by: Sirraide <aeternalmail@gmail.com>