[llvm-commits] [llvm] r100749 - /llvm/trunk/lib/Analysis/ScalarEvolution.cpp

[Dan Gohman]

Author: djg
Date: Thu Apr  8 00:58:24 2010
New Revision: 100749

URL: http://llvm.org/viewvc/llvm-project?rev=100749&view=rev
Log:
Revert this change from a while ago; ScalarEvolution shouldn't analyze
undef as 0, since it can't force other analyses to intepret the undef
in the same way.

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=100749&r1=100748&r2=100749&view=diff
==============================================================================
--- llvm/trunk/lib/Analysis/ScalarEvolution.cpp (original)
+++ llvm/trunk/lib/Analysis/ScalarEvolution.cpp Thu Apr  8 00:58:24 2010
@@ -3123,8 +3123,6 @@
     return getConstant(CI);
   else if (isa<ConstantPointerNull>(V))
     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