[llvm-commits] [llvm] r56115 - /llvm/trunk/lib/Analysis/IPA/GlobalsModRef.cpp
Duncan Sands
baldrick at free.fr
Thu Sep 11 12:35:55 PDT 2008
Author: baldrick
Date: Thu Sep 11 14:35:55 2008
New Revision: 56115
URL: http://llvm.org/viewvc/llvm-project?rev=56115&view=rev
Log:
Intrinsics don't touch internal global variables
(unless passed one via a parameter), even if they
are IntrWriteMem.
Modified:
llvm/trunk/lib/Analysis/IPA/GlobalsModRef.cpp
Modified: llvm/trunk/lib/Analysis/IPA/GlobalsModRef.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Analysis/IPA/GlobalsModRef.cpp?rev=56115&r1=56114&r2=56115&view=diff
==============================================================================
--- llvm/trunk/lib/Analysis/IPA/GlobalsModRef.cpp (original)
+++ llvm/trunk/lib/Analysis/IPA/GlobalsModRef.cpp Thu Sep 11 14:35:55 2008
@@ -392,8 +392,10 @@
FR.GlobalInfo[*GI] |= Ref;
}
} else {
- // Can't say anything useful.
- KnowNothing = true;
+ FunctionEffect |= ModRef;
+ // 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();
}
continue;
}
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