bjoernager/rust
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Fixes multiple issue with counters, with simplification

  Includes a change to the implicit else span in ast_lowering, so coverage
  of the implicit else no longer spans the `then` block.

  Adds coverage for unused closures and async function bodies.

  Fixes: #78542

Adding unreachable regions for known MIR missing from coverage map

Cleaned up PR commits, and removed link-dead-code requirement and tests

  Coverage no longer depends on Issue #76038 (`-C link-dead-code` is
  no longer needed or enforced, so MSVC can use the same tests as
  Linux and MacOS now)

Restrict adding unreachable regions to covered files

  Improved the code that adds coverage for uncalled functions (with MIR
  but not-codegenned) to avoid generating coverage in files not already
  included in the files with covered functions.

Resolved last known issue requiring --emit llvm-ir workaround

  Fixed bugs in how unreachable code spans were added.
This commit is contained in:
Rich Kadel 2020-11-30 23:58:08 -08:00
parent f6c9c1a576
commit def932ca86
354 changed files with 12634 additions and 20486 deletions
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15
compiler/rustc_middle/src/query/mod.rs
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@ -346,6 +346,21 @@ rustc_queries! {
cache_on_disk_if { key.is_local() }
}
/// Returns the name of the file that contains the function body, if instrumented for coverage.
query covered_file_name(key: DefId) -> Option<Symbol> {
desc { |tcx| "retrieving the covered file name, if instrumented, for `{}`", tcx.def_path_str(key) }
storage(ArenaCacheSelector<'tcx>)
cache_on_disk_if { key.is_local() }
}
/// Returns the `CodeRegions` for a function that has instrumented coverage, in case the
/// function was optimized out before codegen, and before being added to the Coverage Map.
query covered_code_regions(key: DefId) -> Vec<&'tcx mir::coverage::CodeRegion> {
desc { |tcx| "retrieving the covered `CodeRegion`s, if instrumented, for `{}`", tcx.def_path_str(key) }
storage(ArenaCacheSelector<'tcx>)
cache_on_disk_if { key.is_local() }
}
/// The `DefId` is the `DefId` of the containing MIR body. Promoteds do not have their own
/// `DefId`. This function returns all promoteds in the specified body. The body references
/// promoteds by the `DefId` and the `mir::Promoted` index. This is necessary, because