What is the process of compiling Rust code along with its dependencies to LLVM bitcode?

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The process of compiling Rust code along with its dependencies to LLVM bitcode involves the following steps:

1. The Rust code is first compiled to intermediate representation (IR) using the Rust compiler.

2. The dependencies of the Rust code are resolved and their source code is compiled to IR as well.

3. The IR code is then optimized using LLVM passes to generate a more efficient code.

4. The optimized IR is then compiled to LLVM bitcode.

5. The LLVM bitcode can be further optimized or linked with other bitcode files to generate a final executable.

Overall, the process involves compiling Rust code and its dependencies to LLVM IR, optimizing it using LLVM passes, and then compiling it to LLVM bitcode.