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Make codegen coverage_context optional, and check #78300

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merged 2 commits into from
Oct 24, 2020

Commits on Oct 23, 2020

  1. Make codegen coverage_context optional, and check

    Addresses Issue rust-lang#78286
    
    Libraries compiled with coverage and linked with out enabling coverage
    would fail when attempting to add the library's coverage statements to
    the codegen coverage context (None).
    
    Now, if coverage statements are encountered while compiling / linking
    with `-Z instrument-coverage` disabled, codegen will *not* attempt to
    add code regions to a coverage map, and it will not inject the LLVM
    instrprof_increment intrinsic calls.
    richkadel committed Oct 23, 2020
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  2. Update compiler/rustc_codegen_llvm/src/coverageinfo/mapgen.rs

    Co-authored-by: Wesley Wiser <wwiser@gmail.com>
    richkadel and wesleywiser authored Oct 23, 2020
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