[PATCH] D69690: [GlobalsAA] Set MayReadAnyGlobal when nothing is known about a function.

[Alina Sbirlea via Phabricator via llvm-commits]

asbirlea created this revision.
asbirlea added reviewers: nlopes, sanjoy.google.
Herald added a subscriber: hiraditya.
Herald added a project: LLVM.

MayReadAnyGlobal should be set when nothing is known about the function, similarly with the above if clause.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D69690

Files:
  llvm/lib/Analysis/GlobalsModRef.cpp


Index: llvm/lib/Analysis/GlobalsModRef.cpp
===================================================================
--- llvm/lib/Analysis/GlobalsModRef.cpp
+++ llvm/lib/Analysis/GlobalsModRef.cpp
@@ -526,6 +526,8 @@
             FI.setMayReadAnyGlobal();
         } else {
           FI.addModRefInfo(ModRefInfo::ModRef);
+          if (!F->isIntrinsic() && !F->onlyAccessesArgMemory())
+            FI.setMayReadAnyGlobal();
           // Can't say anything useful unless it's an intrinsic - they don't
           // read or write global variables of the kind considered here.
           KnowNothing = !F->isIntrinsic();


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