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rust_for_linux: -Zreg-struct-return commandline flag for X86 (#116973) Command line flag `-Zreg-struct-return` for X86 (32-bit) for rust-for-linux. This flag enables the same behavior as the `abi_return_struct_as_int` target spec key. - Tracking issue: https://github.com/rust-lang/rust/issues/116973
rustc_target contains some very low-level details that are
specific to different compilation targets and so forth.
For more information about how rustc works, see the rustc dev guide.