[lld] [Coverage][WebAssembly] Discard InstrProf sections if object not live (PR #172023)

[via llvm-commits]

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@@ -181,7 +192,7 @@ void markLive() {
         if (!c->live)
           message("removing unused section " + toString(c));
       for (InputChunk *c : obj->segments)
-        if (!c->live)
+        if (!c->live && !c->isInstrProfSegment)
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Spxg wrote:

Yeah, `__llvm_prf_*` have the retain flag, the PR has been updated, the current approach is to remove `__llvm_covmap` and `__llvm_covfun` if the object is not live.

https://github.com/llvm/llvm-project/pull/172023