[llvm-branch-commits] [llvm] [BOLT] Match blocks with pseudo probes (PR #99891)

[Amir Ayupov via llvm-branch-commits]

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@@ -45,6 +45,8 @@ namespace opts {
 
 extern cl::opt<bool> TimeRewrite;
 extern cl::OptionCategory BoltOptCategory;
+extern cl::opt<unsigned> Verbosity;
+extern cl::opt<bool> ProfileUsePseudoProbes;
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aaupov wrote:

> Ok, I think we need a dedicated flag to control matching strategy, otherwise it can be confusing. Generating profile with probe and using profile for stale profile matching are two different things.

Agree they're different but both require parsing pseudo probes, which is controlled by the flag. `ProfileUseDFS` is another flag which controls both profile generation and consumption.

> Like profile contains probe doesn't mean stale matching has to use probe.

If the profile contains probe information, but ProfileUsePseudoProbes is not set, we will not use the information for matching.

https://github.com/llvm/llvm-project/pull/99891