[LoopUnroll] Pass SCEV to getUnrollingPreferences hook.  NFCI.

Reviewers: sanjoy, anna, reames, apilipenko, igor-laevsky, mkuper

Subscribers: jholewinski, arsenm, mzolotukhin, nemanjai, nhaehnle, javed.absar, mcrosier, llvm-commits

Differential Revision: https://reviews.llvm.org/D34531

llvm-svn: 306554
diff --git a/llvm/lib/Target/PowerPC/PPCTargetTransformInfo.cpp b/llvm/lib/Target/PowerPC/PPCTargetTransformInfo.cpp
index 3dbd5f5..6110706 100644
--- a/llvm/lib/Target/PowerPC/PPCTargetTransformInfo.cpp
+++ b/llvm/lib/Target/PowerPC/PPCTargetTransformInfo.cpp
@@ -189,7 +189,7 @@
   return PPCTTIImpl::getIntImmCost(Imm, Ty);
 }
 
-void PPCTTIImpl::getUnrollingPreferences(Loop *L,
+void PPCTTIImpl::getUnrollingPreferences(Loop *L, ScalarEvolution &SE,
                                          TTI::UnrollingPreferences &UP) {
   if (ST->getDarwinDirective() == PPC::DIR_A2) {
     // The A2 is in-order with a deep pipeline, and concatenation unrolling
@@ -201,7 +201,7 @@
     UP.AllowExpensiveTripCount = true;
   }
 
-  BaseT::getUnrollingPreferences(L, UP);
+  BaseT::getUnrollingPreferences(L, SE, UP);
 }
 
 bool PPCTTIImpl::enableAggressiveInterleaving(bool LoopHasReductions) {