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Rollup merge of #107718 - Zoxc:z-time, r=nnethercote

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Add `-Z time-passes-format` to allow specifying a JSON output for `-Z time-passes`

This adds back the `-Z time` option as that is useful for [my rustc benchmark tool](https://github.com/Zoxc/rcb), reverting https://github.com/rust-lang/rust/pull/102725. It now uses nanoseconds and bytes as the units so it is renamed to `time-precise`.
This commit is contained in:
Matthias Krüger 2023-03-23 19:55:43 +01:00 • committed by GitHub
commit acd7f878ae
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13 changed files with 107 additions and 32 deletions
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5
compiler/rustc_session/src/session.rs
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@ -1453,7 +1453,10 @@ pub fn build_session(
CguReuseTracker::new_disabled()
};
let prof = SelfProfilerRef::new(self_profiler, sopts.unstable_opts.time_passes);
let prof = SelfProfilerRef::new(
self_profiler,
sopts.unstable_opts.time_passes.then(|| sopts.unstable_opts.time_passes_format),
);
let ctfe_backtrace = Lock::new(match env::var("RUSTC_CTFE_BACKTRACE") {
Ok(ref val) if val == "immediate" => CtfeBacktrace::Immediate,