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Rollup merge of #101997 - cuviper:drop-legacy-pm, r=nikic 
Remove support for legacy PM

This removes support for optimizing with LLVM's legacy pass manager, as well as the unstable `-Znew-llvm-pass-manager` option. We have been defaulting to the new PM since LLVM 13 (except for s390x that waited for 14), and LLVM 15 removed support altogether. The only place we still use the legacy PM is for writing the output file, just like `llc` does.

cc #74705
r? ``@nikic``
2022-09-25 22:06:38 +08:00
..
src Rollup merge of #101997 - cuviper:drop-legacy-pm, r=nikic 2022-09-25 22:06:38 +08:00
Cargo.toml Remove support for LLVM's legacy pass manager 2022-09-18 13:25:49 -07:00
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.