[llvm] [hwasan] Invalidate DominatorTreeAnalysis after each function is sanitized (PR #66935)

[Florian Mayer via llvm-commits]

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@@ -434,6 +438,10 @@ PreservedAnalyses HWAddressSanitizerPass::run(Module &M,
     HWASan.sanitizeFunction(F, FAM);
 
   PreservedAnalyses PA = PreservedAnalyses::none();
+  // DominatorTreeAnalysis and LoopAnalysis are incrementally updated
+  // throughout this pass whenever SplitBlockAndInsertIfThen is called.
+  PA.preserve<DominatorTreeAnalysis>();
+  PA.preserve<LoopAnalysis>();
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fmayer wrote:

Can we add PostDominatorTreeAnalysis here too? Seems like DomTreeUpdater also takes care of that.

https://github.com/llvm/llvm-project/pull/66935