b7ef674832
This commit transitions definitions of custom sections on the wasm target from the unstable `#[wasm_custom_section]` attribute to the already-stable-for-other-targets `#[link_section]` attribute. Mostly the same restrictions apply as before, except that this now applies only to statics. Closes #51088
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 guide.