[clang] [llvm] wip: Move instrumentation passes (PR #92171)

[Arthur Eubanks via cfe-commits]

================
@@ -135,6 +138,65 @@ static bool runOnFunction(Function &F, bool PostInlining) {
   return Changed;
 }
 
+namespace {
+struct EntryExitInstrumenter : public FunctionPass {
+  static char ID;
+  EntryExitInstrumenter() : FunctionPass(ID) {
+    initializeEntryExitInstrumenterPass(*PassRegistry::getPassRegistry());
+  }
+  void getAnalysisUsage(AnalysisUsage &AU) const override {
+    AU.addPreserved<GlobalsAAWrapperPass>();
+    AU.addPreserved<DominatorTreeWrapperPass>();
+  }
+  bool runOnFunction(Function &F) override { return ::runOnFunction(F, false); }
+};
+char EntryExitInstrumenter::ID = 0;
+
+struct PostInlineEntryExitInstrumenter : public FunctionPass {
+  static char ID;
+  PostInlineEntryExitInstrumenter() : FunctionPass(ID) {
+    initializePostInlineEntryExitInstrumenterPass(
+        *PassRegistry::getPassRegistry());
+  }
+  void getAnalysisUsage(AnalysisUsage &AU) const override {
+    AU.addPreserved<GlobalsAAWrapperPass>();
+    AU.addPreserved<DominatorTreeWrapperPass>();
+  }
+  bool runOnFunction(Function &F) override { return ::runOnFunction(F, true); }
+};
+char PostInlineEntryExitInstrumenter::ID = 0;
+}
+
+INITIALIZE_PASS_BEGIN(
+    EntryExitInstrumenter, "ee-instrument",
+    "Instrument function entry/exit with calls to e.g. mcount() (pre inlining)",
+    false, false)
+INITIALIZE_PASS_DEPENDENCY(DominatorTreeWrapperPass)
+INITIALIZE_PASS_END(
+    EntryExitInstrumenter, "ee-instrument",
+    "Instrument function entry/exit with calls to e.g. mcount() (pre inlining)",
+    false, false)
+
+INITIALIZE_PASS_BEGIN(
+    PostInlineEntryExitInstrumenter, "post-inline-ee-instrument",
+    "Instrument function entry/exit with calls to e.g. mcount() "
+    "(post inlining)",
+    false, false)
+INITIALIZE_PASS_DEPENDENCY(DominatorTreeWrapperPass)
+INITIALIZE_PASS_END(
+    PostInlineEntryExitInstrumenter, "post-inline-ee-instrument",
+    "Instrument function entry/exit with calls to e.g. mcount() "
+    "(post inlining)",
+    false, false)
+
+FunctionPass *llvm::createEntryExitInstrumenterPass() {
----------------
aeubanks wrote:

we don't need this one since we're adding it in the optimization pipeline which only works with the new pass manager

https://github.com/llvm/llvm-project/pull/92171