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8906977542
Emit a diagnostic for invalid target options This turns the ICE in https://github.com/rust-lang/rust/issues/120625 into a translatable diagnostic.
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.