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Matthew Maurer 4d397d33da Adjust 64-bit ARM data layouts for LLVM update 
LLVM has updated data layouts to specify `Fn32` on 64-bit ARM to avoid
C++ accidentally underaligning functions when trying to comply with
member function ABIs.

This should only affect Rust in cases where we had a similar bug (I
don't believe we have one), but our data layout must match to generate
code.

As a compatibility adaptatation, if LLVM is not version 19 yet, `Fn32`
gets voided from the data layout.

See llvm/llvm-project#90415
 		2024-05-06 16:53:17 +00:00
..
src Adjust 64-bit ARM data layouts for LLVM update 2024-05-06 16:53:17 +00:00
Cargo.toml sanitizers: Create the rustc_sanitizers crate 2024-04-08 12:05:41 -07:00
README.md mv compiler to compiler/ 2020-08-30 18:45:07 +03:00
messages.ftl Emit a diagnostic for invalid target options 2024-02-03 22:03:25 -05:00

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.