[PATCH] D112098: [ASan] Added stack safety support in address sanitizer.

[Evgenii Stepanov via Phabricator via cfe-commits]

eugenis added inline comments.


================
Comment at: llvm/include/llvm/Analysis/StackSafetyAnalysis.h:93
+  bool invalidate(Module &, const PreservedAnalyses &,
+                  ModuleAnalysisManager::Invalidator &) {
+    return false;
----------------
vitalybuka wrote:
> vitalybuka wrote:
> > we still can't do that, some passes can make results irrelevant
> Looks like only immutable analysis can be used through proxy, and this analysis cannot be immutable.
> Maybe we have to convert Asan into ModulePass, like HWAsan.
> Any other ideas? @eugenis @pcc @morehouse 
Is the problem here that an invalidated analysis needs to be rerun, and the module-to-function proxy does not know how to do that?

TBH, I'm not sure how big the performance benefits of a function pass are. With the amount of time we've sunk in working around function pass requirements and I'd say just go for it.



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  https://reviews.llvm.org/D112098/new/

https://reviews.llvm.org/D112098