Rollup merge of #161902 - Zalathar:coverage-info, r=mejrs coverage: Rename the three main coverage-info structs This PR renames the three main structures used to carry per-function coverage info through different stages of compilation: ```text - CoverageInfoHi => CoverageEarlyInfo // collected early, at the THIR/MIR boundary during MIR building - FunctionCoverageInfo => CoverageMirInfo // collected during the main MIR instrumentation pass - CoverageIdsInfo => CoverageCodegenInfo // collected during codegen, after MIR opts ``` The new names should hopefully help to keep the three structs distinct, while also avoiding the historical inconsistency of the previous names. The renaming also resolves an old TODO of mine about `coverage_ids_info` no longer making sense as a name. There should be no change to compiler behaviour.
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