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

[Florian Mayer via llvm-commits]

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@@ -1542,8 +1557,13 @@ void HWAddressSanitizer::sanitizeFunction(Function &F,
     }
   }
 
+  DominatorTree &DT = FAM.getResult<DominatorTreeAnalysis>(F);
+  PostDominatorTree &PDT = FAM.getResult<PostDominatorTreeAnalysis>(F);
+  DomTreeUpdater DTU(DT, PDT, DomTreeUpdater::UpdateStrategy::Lazy);
+  LoopInfo &LI = FAM.getResult<LoopAnalysis>(F);
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fmayer wrote:

We could pull the definitions for DT PDT and LI out of the if in 1538 then we need not repeat them.

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