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67762ffe35
Emit LLVM optimization remarks when enabled with `-Cremark` The default diagnostic handler considers all remarks to be disabled by default unless configured otherwise through LLVM internal flags: `-pass-remarks`, `-pass-remarks-missed`, and `-pass-remarks-analysis`. This behaviour makes `-Cremark` ineffective on its own. Fix this by configuring a custom diagnostic handler that enables optimization remarks based on the value of `-Cremark` option. With `-Cremark=all` enabling all remarks. Fixes #90924. r? `@nikic`
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.