[llvm] [MemProf] Allow promotion if target is a declaration (PR #115555)

[Teresa Johnson via llvm-commits]

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@@ -132,6 +132,11 @@ cl::opt<bool> EnableMemProfContextDisambiguation(
 cl::opt<bool> SupportsHotColdNew(
     "supports-hot-cold-new", cl::init(false), cl::Hidden,
     cl::desc("Linking with hot/cold operator new interfaces"));
+
+cl::opt<bool> MemProfRequireDefinitionForPromotion(
+    "memprof-require-definition-for-promotion", cl::init(false), cl::Hidden,
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teresajohnson wrote:

I meant to change it to be more aggressive by default and enable promotion with the target is a declaration (that's what I meant by "enabled" - promotion enabled, not the flag).

https://github.com/llvm/llvm-project/pull/115555