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rust/compiler/rustc_codegen_llvm
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bors a8f6e614f8 Auto merge of #89652 - rcvalle:rust-cfi, r=nagisa 
Add LLVM CFI support to the Rust compiler

This PR adds LLVM Control Flow Integrity (CFI) support to the Rust compiler. It initially provides forward-edge control flow protection for Rust-compiled code only by aggregating function pointers in groups identified by their number of arguments.

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 defining and using compatible type identifiers (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).

Thank you, `@eddyb` and `@pcc,` for all the help!
2021-10-27 09:19:42 +00:00
..
src Auto merge of #89652 - rcvalle:rust-cfi, r=nagisa 2021-10-27 09:19:42 +00:00
Cargo.toml Update to measureme v10 2021-10-07 15:08:44 +02:00
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.