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Override rustc version in ui and mir-opt tests to get stable hashes #92363

Merged
merged 2 commits into from
Jan 21, 2022
Merged

Override rustc version in ui and mir-opt tests to get stable hashes #92363

merged 2 commits into from
Jan 21, 2022

Commits on Jan 20, 2022

  1. Override rustc version in ui and mir-opt tests to get stable hashes 

    Building a dozen separate regexps for each test in compiletest consumes significant amounts of CPU cycles.
Using `RUSTC_FORCE_INCR_COMP_ARTIFACT_HEADER` stabilizes hashes calcuated for the individual tests so
no test-dependent normalization is needed. Hashes for the standard library still change so some
normalizations are still needed.
    @the8472
    the8472 committed Jan 20, 2022
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  2. use lazy_static to compile Regex::new instances once instead on eac… 

    …h test
    @the8472
    the8472 committed Jan 20, 2022
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