[llvm-branch-commits] [llvm] [Instrumentor] Add a global function regexp to limit the instrumentation (PR #196234)

[Matt Arsenault via llvm-branch-commits]

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@@ -274,6 +281,17 @@ bool InstrumentorImpl::instrument() {
   if (!shouldInstrumentTarget())
     return Changed;
 
+  const auto FunctionRegexStr = IConf.FunctionRegex->getString();
+  if (!FunctionRegexStr.empty()) {
+    ParsedFunctionRegex = Regex(FunctionRegexStr);
+    std::string ErrMsg;
+    if (!ParsedFunctionRegex.isValid(ErrMsg)) {
+      IIRB.Ctx.diagnose(DiagnosticInfoInstrumentation(
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arsenm wrote:

missing error test 

https://github.com/llvm/llvm-project/pull/196234