05abce5d05
explicitly end the lifetime of `va_list` tracking issue: https://github.com/rust-lang/rust/issues/44930 split out from: https://github.com/rust-lang/rust/pull/144549 The `va_list` is created in the compiler itself when the variable argument list `...` is desugared, and hence the lifetime end is not inserted automatically. The value can't outlive the function in which it was created, so it is correct to end the lifetime here. Ending the lifetime explicitly also appears to give slightly better codegen in https://github.com/rust-lang/rust/pull/144549. I also included a little drive-by improvement to not cast pointers to integers and back again. r? codegen
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.