From: Reid Spencer <rspencer@reidspencer.com>
Date: Mon, 16 Apr 2007 02:24:41 +0000 (+0000)
Subject: Revert last patch. It was already fixed.
X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=3e35c8d15e6981ab759820e84ffcb945bfcef71b;p=oota-llvm.git

Revert last patch. It was already fixed.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36102 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Analysis/ScalarEvolution.cpp b/lib/Analysis/ScalarEvolution.cpp
index 89067539c32..473eadcd878 100644
--- a/lib/Analysis/ScalarEvolution.cpp
+++ b/lib/Analysis/ScalarEvolution.cpp
@@ -2125,12 +2125,7 @@ SolveQuadraticEquation(const SCEVAddRecExpr *AddRec) {
     // Compute the two solutions for the quadratic formula. 
     // The divisions must be performed as signed divisions.
     APInt NegB(-B);
-    APInt TwoA( A << Two );
-    if (TwoA == 0) {
-      const Type* Ty = LC->getValue()->getType();
-      return std::make_pair(SCEVUnknown::get(UndefValue::get(Ty)),
-                            SCEVUnknown::get(UndefValue::get(Ty)));
-    }
+    APInt TwoA( A << 1 );
     ConstantInt *Solution1 = ConstantInt::get((NegB + SqrtVal).sdiv(TwoA));
     ConstantInt *Solution2 = ConstantInt::get((NegB - SqrtVal).sdiv(TwoA));