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| author | Ramon de C Valle <rcvalle@users.noreply.github.com> | 2023-02-01 16:42:28 +0000 |
|---|---|---|
| committer | Sami Tolvanen <samitolvanen@google.com> | 2023-02-01 17:48:03 +0000 |
| commit | b1e9ab7438a098a18fecda88fc87ef4ccadfcf1e (patch) | |
| tree | 79cb5165645fb92108d943c888a3ed6274ca7cf3 /clang/lib/Frontend | |
| parent | 6e3d12951dd7d3305f0e33e0aa4038cbd82f245a (diff) | |
| download | llvm-b1e9ab7438a098a18fecda88fc87ef4ccadfcf1e.zip llvm-b1e9ab7438a098a18fecda88fc87ef4ccadfcf1e.tar.gz llvm-b1e9ab7438a098a18fecda88fc87ef4ccadfcf1e.tar.bz2 | |
Add CFI integer types normalization
This commit adds a new option (i.e.,
`-fsanitize-cfi-icall-normalize-integers`) for normalizing integer types
as vendor extended types for cross-language LLVM CFI/KCFI support with
other languages that can't represent and encode C/C++ integer types.
Specifically, integer types are encoded as their defined representations
(e.g., 8-bit signed integer, 16-bit signed integer, 32-bit signed
integer, ...) for compatibility with languages that define
explicitly-sized integer types (e.g., i8, i16, i32, ..., in Rust).
``-fsanitize-cfi-icall-normalize-integers`` is compatible with
``-fsanitize-cfi-icall-generalize-pointers``.
This helps with providing cross-language CFI support with the Rust
compiler and is an alternative solution for the issue described and
alternatives proposed in the RFC
https://github.com/rust-lang/rfcs/pull/3296.
For more information about LLVM CFI/KCFI and cross-language LLVM
CFI/KCFI support for the Rust compiler, see the design document in the
tracking issue https://github.com/rust-lang/rust/issues/89653.
Reviewed By: pcc, samitolvanen
Differential Revision: https://reviews.llvm.org/D139395
Diffstat (limited to 'clang/lib/Frontend')
0 files changed, 0 insertions, 0 deletions