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The Rust code is often written under an assumption that for generic methods inline attribute is mostly unnecessary, since for optimized builds using ThinLTO, a method will be generated in at least one CGU and available for import. For example, deref implementations for Box, Vec, MutexGuard, and MutexGuard are not currently marked as inline, neither is identity implementation of From trait. In PGO builds, when functions are determined to be cold, the default multiplier of zero will stop the import, even for completely trivial functions. Increase slightly the default multiplier from 0 to 0.1 to import them regardless. |
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| .. | ||
| src | ||
| Cargo.toml | ||
| 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.