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5ad7a646a5
rust/compiler/rustc_codegen_llvm
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Ramon de C Valle 5ad7a646a5 Add fine-grained LLVM CFI support to the Rust compiler 
This commit improves the LLVM Control Flow Integrity (CFI) support in
the Rust compiler by providing forward-edge control flow protection for
Rust-compiled code only by aggregating function pointers in groups
identified by their return and parameter types.

Forward-edge control flow protection for C or C++ and Rust -compiled
code "mixed binaries" (i.e., for when C or C++ and Rust -compiled code
share the same virtual address space) will be provided in later work as
part of this project by identifying C char and integer type uses at the
time types are encoded (see Type metadata in the design document in the
tracking issue #89653).

LLVM CFI can be enabled with -Zsanitizer=cfi and requires LTO (i.e.,
-Clto).
2022-07-23 10:51:34 -07:00
..
src Add fine-grained LLVM CFI support to the Rust compiler 2022-07-23 10:51:34 -07:00
Cargo.toml Add fine-grained LLVM CFI support to the Rust compiler 2022-07-23 10:51:34 -07:00
README.md mv compiler to compiler/ 2020-08-30 18:45:07 +03:00

README.md

The codegen crate contains the code to convert from MIR into LLVM IR, and then from LLVM IR into machine code. In general it contains code that runs towards the end of the compilation process.

For more information about how codegen works, see the rustc dev guide.