[llvm] [llvm-profgen] Support creating profiles of arbitrary events (PR #99026)

[via llvm-commits]

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@@ -41,6 +41,17 @@ static cl::opt<bool>
                                 "and produce context-insensitive profile."));
 cl::opt<bool> ShowDetailedWarning("show-detailed-warning",
                                   cl::desc("Show detailed warning message."));
+cl::opt<bool>
+    LeadingIPOnly("leading-ip-only",
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WenleiHe wrote:

Additionally, does use of `profiled-event` require `leading-ip-only`? If `leading-ip-only` is not specified, what is the expected behavior? 

https://github.com/llvm/llvm-project/pull/99026