[llvm] [BOLT] Introduce BinaryFunction::canClone() (PR #138771)

[Maksim Panchenko via llvm-commits]

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@@ -3744,6 +3744,16 @@ void BinaryFunction::postProcessBranches() {
   assert(validateCFG() && "invalid CFG");
 }
 
+bool BinaryFunction::canClone() const {
+  // For instrumentation, we need to restrict the execution to the rewritten
+  // version of the function.
+  if (opts::Instrument)
+    return false;
+
+  // Check for the presence of metadata that cannot be duplicated.
+  return !hasEHRanges() && !hasSDTMarker() && !hasPseudoProbe() && !hasORC();
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maksfb wrote:

I expect only tiny leaf function to be cloned, everything else should be patched.

https://github.com/llvm/llvm-project/pull/138771