[llvm] r186531 - Add a micro optimization to catch cases where the PtrA equals PtrB.

[Nadav Rotem]

Author: nadav
Date: Wed Jul 17 14:52:25 2013
New Revision: 186531

URL: http://llvm.org/viewvc/llvm-project?rev=186531&view=rev
Log:
Add a micro optimization to catch cases where the PtrA equals PtrB.

Modified:
    llvm/trunk/lib/Transforms/Vectorize/SLPVectorizer.cpp

Modified: llvm/trunk/lib/Transforms/Vectorize/SLPVectorizer.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Transforms/Vectorize/SLPVectorizer.cpp?rev=186531&r1=186530&r2=186531&view=diff
==============================================================================
--- llvm/trunk/lib/Transforms/Vectorize/SLPVectorizer.cpp (original)
+++ llvm/trunk/lib/Transforms/Vectorize/SLPVectorizer.cpp Wed Jul 17 14:52:25 2013
@@ -980,7 +980,7 @@ bool BoUpSLP::isConsecutiveAccess(Value
     return false;
 
   // Check that A and B are of the same type.
-  if (PtrA->getType() != PtrB->getType())
+  if (PtrA == PtrB || PtrA->getType() != PtrB->getType())
     return false;
 
   // Calculate a constant offset from the base pointer without using SCEV