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Remove -Zkeep-hygiene-data.

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It was added way back in #28585 under the name `-Zkeep-mtwt-tables`. The
justification was:

> This is so that the resolution results can be used after analysis,
> potentially for tool support.

There are no uses of significance in the code base, and various Google
searches for both option names (and variants) found nothing of interest.

@petrochenkov says removing this part (and it's only part) of the
hygiene data is dubious. It doesn't seem that big, so let's just keep it
around.
This commit is contained in:
Nicholas Nethercote 2023-11-09 13:38:30 +11:00
parent fdaaaf9f92
commit 2e40d11f8c
4 changed files with 0 additions and 12 deletions
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1
compiler/rustc_interface/src/tests.rs
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@ -679,7 +679,6 @@ fn test_unstable_options_tracking_hash() {
untracked!(incremental_info, true);
untracked!(incremental_verify_ich, true);
untracked!(input_stats, true);
untracked!(keep_hygiene_data, true);
untracked!(link_native_libraries, false);
untracked!(llvm_time_trace, true);
untracked!(ls, vec!["all".to_owned()]);