[llvm] [DLCov 1/5] Add CMake option to enable enhanced line number coverage tracking (PR #107278)

[J. Ryan Stinnett via llvm-commits]

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@@ -475,6 +475,17 @@ enabled sub-projects. Nearly all of these variable names begin with
 **LLVM_ENABLE_BINDINGS**:BOOL
   If disabled, do not try to build the OCaml bindings.
 
+**LLVM_ENABLE_DEBUGLOC_COVERAGE_TRACKING**:STRING
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jryans wrote:

Should the ABI-breaking-ness be mentioned here as well...? Not sure if that's a common thing to document here or not.

https://github.com/llvm/llvm-project/pull/107278