[PATCH] D126385: [msan] Implement -msan-pass-caller-to-runtime.

[Vitaly Buka via Phabricator via llvm-commits]

vitalybuka added a comment.

Do you have estimate of how often this happend? How many different instrumented functions which can be called from uninstrumented code?



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Comment at: llvm/lib/Transforms/Instrumentation/MemorySanitizer.cpp:1274
+            Intrinsic::getDeclaration(F.getParent(), Intrinsic::returnaddress),
+            IRB.getInt32(0));
+        ContextState = IRB.CreateCall(MS.MsanGetContextStateFn, RetAddr);
----------------
Can you avoid ClPassCallerToRuntime and always pass the argument? I guess function will just not use it.



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https://reviews.llvm.org/D126385