[llvm-commits] [llvm] r80014 - /llvm/trunk/lib/Analysis/ScalarEvolution.cpp

[Dan Gohman]

Author: djg
Date: Tue Aug 25 12:49:57 2009
New Revision: 80014

URL: http://llvm.org/viewvc/llvm-project?rev=80014&view=rev
Log:
Teach ScalarEvolution about GlobalAliases.

Modified:
    llvm/trunk/lib/Analysis/ScalarEvolution.cpp

Modified: llvm/trunk/lib/Analysis/ScalarEvolution.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Analysis/ScalarEvolution.cpp?rev=80014&r1=80013&r2=80014&view=diff

==============================================================================
--- llvm/trunk/lib/Analysis/ScalarEvolution.cpp (original)
+++ llvm/trunk/lib/Analysis/ScalarEvolution.cpp Tue Aug 25 12:49:57 2009
@@ -63,6 +63,7 @@
 #include "llvm/Constants.h"
 #include "llvm/DerivedTypes.h"
 #include "llvm/GlobalVariable.h"
+#include "llvm/GlobalAlias.h"
 #include "llvm/Instructions.h"
 #include "llvm/LLVMContext.h"
 #include "llvm/Operator.h"
@@ -2906,6 +2907,8 @@
     return getIntegerSCEV(0, V->getType());
   else if (isa<UndefValue>(V))
     return getIntegerSCEV(0, V->getType());
+  else if (GlobalAlias *GA = dyn_cast<GlobalAlias>(V))
+    return GA->mayBeOverridden() ? getUnknown(V) : getSCEV(GA->getAliasee());
   else
     return getUnknown(V);