From: Nadav Rotem <nrotem@apple.com>
Date: Thu, 18 Jul 2013 18:34:21 +0000 (+0000)
Subject: Handle constants without going through SCEV.
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=39f59f4d95de11c3c39bf6753a555ac32cacf7b7;p=oota-llvm.git

Handle constants without going through SCEV.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@186593 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Transforms/Vectorize/SLPVectorizer.cpp b/lib/Transforms/Vectorize/SLPVectorizer.cpp
index 3629eeec173..f1da774ede5 100644
--- a/lib/Transforms/Vectorize/SLPVectorizer.cpp
+++ b/lib/Transforms/Vectorize/SLPVectorizer.cpp
@@ -1033,6 +1033,12 @@ bool BoUpSLP::isConsecutiveAccess(Value *A, Value *B) {
   if (GepA && GepA->getPointerOperand() == PtrB)
     return false;
 
+  ConstantInt *CA = dyn_cast<ConstantInt>(PtrA);
+  ConstantInt *CB = dyn_cast<ConstantInt>(PtrB);
+  if (CA && CB) {
+    return (CA->getSExtValue() + Sz == CB->getSExtValue());
+  }
+
   // Calculate the distance.
   const SCEV *PtrSCEVA = SE->getSCEV(PtrA);
   const SCEV *PtrSCEVB = SE->getSCEV(PtrB);