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[self-profiler] Add example to -Z help to turn on query key recording

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Also add the `default` option so that it's easy to add query key
recording to the default.
This commit is contained in:
Wesley Wiser 2020-01-16 08:24:34 -05:00
parent 9fe05e9456
commit b1d0c118ff
2 changed files with 7 additions and 1 deletions
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2
src/librustc_data_structures/profiling.rs
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@ -136,9 +136,11 @@ bitflags::bitflags! {
}
}
// keep this in sync with the `-Z self-profile-events` help message in librustc_session/options.rs
const EVENT_FILTERS_BY_NAME: &[(&str, EventFilter)] = &[
("none", EventFilter::NONE),
("all", EventFilter::ALL),
("default", EventFilter::DEFAULT),
("generic-activity", EventFilter::GENERIC_ACTIVITIES),
("query-provider", EventFilter::QUERY_PROVIDERS),
("query-cache-hit", EventFilter::QUERY_CACHE_HITS),

6
src/librustc_session/options.rs
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@ -923,8 +923,12 @@ options! {DebuggingOptions, DebuggingSetter, basic_debugging_options,
self_profile: SwitchWithOptPath = (SwitchWithOptPath::Disabled,
parse_switch_with_opt_path, [UNTRACKED],
"run the self profiler and output the raw event data"),
// keep this in sync with the event filter names in librustc_data_structures/profiling.rs
self_profile_events: Option<Vec<String>> = (None, parse_opt_comma_list, [UNTRACKED],
"specifies which kinds of events get recorded by the self profiler"),
"specifies which kinds of events get recorded by the self profiler;
for example: `-Z self-profile-events=default,query-keys`
all options: none, all, default, generic-activity, query-provider, query-cache-hit
query-blocked, incr-cache-load, query-keys"),
emit_stack_sizes: bool = (false, parse_bool, [UNTRACKED],
"emits a section containing stack size metadata"),
plt: Option<bool> = (None, parse_opt_bool, [TRACKED],