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rust/compiler/rustc_codegen_llvm
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Matthias Krüger 74d1d59e7c
Rollup merge of #143125 - tgross35:aarch64-neon-llvm19-f16, r=cuviper 
Disable f16 on Aarch64 without neon for llvm < 20.1.1

This check was added unconditionally in c51b229140 ("Disable f16 on Aarch64 without `neon`") and reverted in 4a8d35709e ("Revert "Disable `f16` on Aarch64 without `neon`"") since it did not fail in Rust's build. However, it is still possible to hit this crash if using LLVM 19 built with assertions, so disable the type conditionally based on version here.

Note that for these builds, a similar patch is needed in the build script for `compiler-builtins` since it does not yet use `cfg(target_has_reliable_f16)` (hopefully to be resolved in the near future).

Report: https://github.com/rust-lang/rust/pull/139276#issuecomment-3014781652
Original LLVM issue: https://github.com/llvm/llvm-project/issues/129394
2025-07-01 04:25:34 +02:00
..
src Rollup merge of #143125 - tgross35:aarch64-neon-llvm19-f16, r=cuviper 2025-07-01 04:25:34 +02:00
Cargo.toml Bump object 2025-06-05 07:59:51 +08:00
messages.ftl move -Ctarget-feature handling into shared code 2025-06-19 09:44:01 +09:00
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.