[llvm] r243065 - [NaryReassociate] remove redundant code

[Jingyue Wu]

Author: jingyue
Date: Thu Jul 23 18:13:37 2015
New Revision: 243065

URL: http://llvm.org/viewvc/llvm-project?rev=243065&view=rev
Log:
[NaryReassociate] remove redundant code

This check is already done by findClosestMatchingDominator.

Modified:
    llvm/trunk/lib/Transforms/Scalar/NaryReassociate.cpp

Modified: llvm/trunk/lib/Transforms/Scalar/NaryReassociate.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Transforms/Scalar/NaryReassociate.cpp?rev=243065&r1=243064&r2=243065&view=diff
==============================================================================
--- llvm/trunk/lib/Transforms/Scalar/NaryReassociate.cpp (original)
+++ llvm/trunk/lib/Transforms/Scalar/NaryReassociate.cpp Thu Jul 23 18:13:37 2015
@@ -508,11 +508,6 @@ Instruction *NaryReassociate::tryReassoc
 
 Instruction *NaryReassociate::tryReassociatedAdd(const SCEV *LHSExpr,
                                                  Value *RHS, Instruction *I) {
-  auto Pos = SeenExprs.find(LHSExpr);
-  // Bail out if LHSExpr is not previously seen.
-  if (Pos == SeenExprs.end())
-    return nullptr;
-
   // Look for the closest dominator LHS of I that computes LHSExpr, and replace
   // I with LHS + RHS.
   auto *LHS = findClosestMatchingDominator(LHSExpr, I);