[llvm-branch-commits] [llvm] [WebAssembly] Port WebAssemblyExceptionAnalysis (PR #210246)

[Aiden Grossman via llvm-branch-commits]

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@@ -207,3 +239,14 @@ void WebAssemblyExceptionInfo::print(raw_ostream &OS, const Module *) const {
   for (auto &WE : TopLevelExceptions)
     WE->print(OS);
 }
+
+bool WebAssemblyExceptionInfo::invalidate(
+    MachineFunction &MF, const PreservedAnalyses &PA,
+    MachineFunctionAnalysisManager::Invalidator &) {
+  // Check whether the analysis, all analyses on machine functions, or the
+  // machine function's CFG have been preserved.
+  auto PAC = PA.getChecker<MachineBlockFrequencyAnalysis>();
+  return !PAC.preserved() &&
+         !PAC.preservedSet<AllAnalysesOn<MachineFunction>>() &&
+         !PAC.preservedSet<CFGAnalyses>();
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boomanaiden154 wrote:

We're saying that we only invalidate the analysis if the analysis itself is not marked as preserved (`!PAC.preserved()`), all MachineFunction analyses are not marked as preserved, and the pass author does not mark CFGAnalyses as preserved.

https://github.com/llvm/llvm-project/pull/210246