rust/compiler/rustc_codegen_llvm
Matthias Krüger cbe2522652
Rollup merge of #114382 - scottmcm:compare-bytes-intrinsic, r=cjgillot
Add a new `compare_bytes` intrinsic instead of calling `memcmp` directly

As discussed in #113435, this lets the backends be the place that can have the "don't call the function if n == 0" logic, if it's needed for the target.  (I didn't actually *add* those checks, though, since as I understood it we didn't actually need them on known targets?)

Doing this also let me make it `const` (unstable), which I don't think `extern "C" fn memcmp` can be.

cc `@RalfJung` `@Amanieu`
2023-08-07 05:29:12 +02:00
..
src Rollup merge of #114382 - scottmcm:compare-bytes-intrinsic, r=cjgillot 2023-08-07 05:29:12 +02:00
Cargo.toml Revert "use new c literals instead of cstr! macro" 2023-07-05 13:11:27 +02:00
messages.ftl Better diagnostics for dlltool errors. 2023-07-17 20:20:01 +00:00
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.