Integrate measureme's hardware performance counter support.#78781

Merged

bors merged 9 commits intorust-lang:masterfrom

eddyb:measureme-rdpmc

Jun 14, 2022

Commits on Jun 13, 2022

Integrate measureme's hardware performance counter support.
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proc_macro: bypass RandomState to remove ASLR-like effects.
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rustc: disable jemalloc's time-delayed purging to remove ASLR-like effects.
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Revert "rustc: disable jemalloc's time-delayed purging to remove ASLR-like effects."
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rustc_parse: work around instruction-counting non-determinism.
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Revert "rustc_parse: work around instruction-counting non-determinism."
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rustc_trait_selection: work around instruction-counting non-determinism.
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Revert "rustc_trait_selection: work around instruction-counting non-determinism."
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[perf] std: add missing `#[inline]` to `DefaultHasher::{new,default}`.
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