Add a micro optimization to catch cases where the PtrA equals PtrB.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@186531 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Transforms/Vectorize/SLPVectorizer.cpp b/lib/Transforms/Vectorize/SLPVectorizer.cpp
index 8a1c5b7bca94a5d7f9acb94aac8bb9c971b76eac..78f7783328dba6e6ba2b2c8298f65784b703deb1 100644 (file)
--- a/lib/Transforms/Vectorize/SLPVectorizer.cpp
+++ b/lib/Transforms/Vectorize/SLPVectorizer.cpp
@@ -980,7 +980,7 @@ bool BoUpSLP::isConsecutiveAccess(Value *A, Value *B) {
     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