[clang] [llvm] [WPD]: Apply speculative WPD in non-lto mode. (PR #145031)

[Teresa Johnson via llvm-commits]

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@@ -1333,10 +1377,10 @@ bool DevirtModule::trySingleImplDevirt(
   if (!IsExported)
     return false;
 
-  // If the only implementation has local linkage, we must promote to external
-  // to make it visible to thin LTO objects. We can only get here during the
-  // ThinLTO export phase.
-  if (TheFn->hasLocalLinkage()) {
+  // In LTO mode, if the only implementation has local linkage, we must promote
+  // to external to make it visible to thin LTO objects. We can only get here
+  // during the ThinLTO export phase.
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teresajohnson wrote:

Is the last sentence still true?

https://github.com/llvm/llvm-project/pull/145031