[llvm] [WPD]: Enable speculative devirtualizatoin. (PR #159048)

[Teresa Johnson via llvm-commits]

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@@ -226,6 +226,10 @@ struct WholeProgramDevirtPass : public PassInfoMixin<WholeProgramDevirtPass> {
   ModuleSummaryIndex *ExportSummary;
   const ModuleSummaryIndex *ImportSummary;
   bool UseCommandLine = false;
+  // True if ExportSummary was built locally from the module rather than
+  // provided externally to the pass (e.g., during LTO). Default value is false
+  // unless explicitly set when the Summary is explicitly built.
+  bool HasLocalSummary = false;
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teresajohnson wrote:

Since this variable is never set or queried in this PR, I would remove that and add it back in the future pass where it is needed. 

https://github.com/llvm/llvm-project/pull/159048