[ScalarOpts] Remove dead code.

[oota-llvm.git] / lib / Transforms / Scalar / LoopRerollPass.cpp

diff --git a/lib/Transforms/Scalar/LoopRerollPass.cpp b/lib/Transforms/Scalar/LoopRerollPass.cpp
index 282071364dce80416b2c60edb0438df743b62f3a..7f73baa6a8ffed24ae64f2a27a5db21bca6201b1 100644 (file)
--- a/lib/Transforms/Scalar/LoopRerollPass.cpp
+++ b/lib/Transforms/Scalar/LoopRerollPass.cpp
@@ -303,22 +303,6 @@ namespace {
       // The functions below can be called after we've finished processing all
       // instructions in the loop, and we know which reductions were selected.
 
-      // Is the provided instruction the PHI of a reduction selected for
-      // rerolling?
-      bool isSelectedPHI(Instruction *J) {
-        if (!isa<PHINode>(J))
-          return false;
-
-        for (DenseSet<int>::iterator RI = Reds.begin(), RIE = Reds.end();
-             RI != RIE; ++RI) {
-          int i = *RI;
-          if (cast<Instruction>(J) == PossibleReds[i].getPHI())
-            return true;
-        }
-
-        return false;
-      }
-
       bool validateSelected();
       void replaceSelected();
 
@@ -484,7 +468,7 @@ void LoopReroll::collectPossibleIVs(Loop *L,
       continue;
 
     if (const SCEVAddRecExpr *PHISCEV =
-        dyn_cast<SCEVAddRecExpr>(SE->getSCEV(I))) {
+            dyn_cast<SCEVAddRecExpr>(SE->getSCEV(&*I))) {
       if (PHISCEV->getLoop() != L)
         continue;
       if (!PHISCEV->isAffine())
@@ -494,10 +478,10 @@ void LoopReroll::collectPossibleIVs(Loop *L,
         const APInt &AInt = IncSCEV->getValue()->getValue().abs();
         if (IncSCEV->getValue()->isZero() || AInt.uge(MaxInc))
           continue;
-        IVToIncMap[I] = IncSCEV->getValue()->getSExtValue();
+        IVToIncMap[&*I] = IncSCEV->getValue()->getSExtValue();
         DEBUG(dbgs() << "LRR: Possible IV: " << *I << " = " << *PHISCEV
                      << "\n");
-        PossibleIVs.push_back(I);
+        PossibleIVs.push_back(&*I);
       }
     }
   }
@@ -558,7 +542,7 @@ void LoopReroll::collectPossibleReductions(Loop *L,
     if (!I->getType()->isSingleValueType())
       continue;
 
-    SimpleLoopReduction SLR(I, L);
+    SimpleLoopReduction SLR(&*I, L);
     if (!SLR.valid())
       continue;
 
@@ -1297,7 +1281,7 @@ void LoopReroll::DAGRootTracker::replace(const SCEV *IterCount) {
         SCEV::FlagAnyWrap));
     { // Limit the lifetime of SCEVExpander.
       SCEVExpander Expander(*SE, DL, "reroll");
-      Value *NewIV = Expander.expandCodeFor(H, IV->getType(), Header->begin());
+      Value *NewIV = Expander.expandCodeFor(H, IV->getType(), &Header->front());
 
       for (auto &KV : Uses) {
         if (KV.second.find_first() == 0)