[llvm] [memprof] Add YAML read/write support to llvm-profdata (PR #118915)

[Kazu Hirata via llvm-commits]

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@@ -747,7 +747,16 @@ loadInput(const WeightedFile &Input, SymbolRemapper *Remapper,
                               Filename);
     };
 
-    WC->Writer.addMemProfData(Reader->takeMemProfData(), MemProfError);
+    auto MemProfData = Reader->takeMemProfData();
+
+    // Check for the empty input in case the YAML file is invalid.
+    if (MemProfData.Records.empty()) {
+      WC->Errors.emplace_back(
+          make_error<StringError>("The profile is empty.", std::error_code()),
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kazutakahirata wrote:

Done.

https://github.com/llvm/llvm-project/pull/118915