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

[Florian Hahn via llvm-commits]

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@@ -1520,10 +1537,10 @@ void HWAddressSanitizer::sanitizeFunction(Function &F,
                    Mapping.WithFrameRecord &&
                    !SInfo.AllocasToInstrument.empty());
 
+  DominatorTree &DT = FAM.getResult<DominatorTreeAnalysis>(F);
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fhahn wrote:

This now may request the DT/LI/PDT in cases where it wasn't before, which should probably avoided. In cases they are only needed for updating them/preserving them, you can use `FAM.getCachedResult`, which won't cause the DT to be computed if it isn't already cached.

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