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rust/compiler/rustc_codegen_llvm
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Matthias Krüger 433f1f425e
Rollup merge of #96215 - nikic:legacy-pm-removal, r=nagisa 
Drop support for legacy PM with LLVM 15

LLVM 15 already removes some of the legacy PM APIs we're using. This patch forces use of NewPM with LLVM 15 (with `-Z new-llvm-pass-manager=no` throwing a warning) and stubs out various FFI methods with a report_fatal_error on LLVM 15.

For LLVMPassManagerBuilderPopulateLTOPassManager() I went with adding our own wrapper, as the alternative would be to muck about with weak symbols, which seems to be non-trivial as far as cross-platform support is concerned (std has `weak!` for this purpose, but only as an internal utility.)

Fixes #96072.
Fixes #96362.
2022-04-25 00:11:02 +02:00
..
src Rollup merge of #96215 - nikic:legacy-pm-removal, r=nagisa 2022-04-25 00:11:02 +02:00
Cargo.toml debuginfo: Simplify TypeMap used during LLVM debuginfo generation. 2022-02-21 13:03:36 +01:00
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.