Delete dead code.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100981 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Analysis/IVUsers.cpp b/lib/Analysis/IVUsers.cpp
index c821cc95ca10aef04c5349af5267639fa7d5119c..78de8c69ae3cd6d5d7474228fe92417aff72f5cd 100644 (file)
--- a/lib/Analysis/IVUsers.cpp
+++ b/lib/Analysis/IVUsers.cpp
@@ -36,32 +36,6 @@ Pass *llvm::createIVUsersPass() {
   return new IVUsers();
 }
 
-/// CollectSubexprs - Split S into subexpressions which can be pulled out into
-/// separate registers.
-static void CollectSubexprs(const SCEV *S,
-                            SmallVectorImpl<const SCEV *> &Ops,
-                            ScalarEvolution &SE) {
-  if (const SCEVAddExpr *Add = dyn_cast<SCEVAddExpr>(S)) {
-    // Break out add operands.
-    for (SCEVAddExpr::op_iterator I = Add->op_begin(), E = Add->op_end();
-         I != E; ++I)
-      CollectSubexprs(*I, Ops, SE);
-    return;
-  } else if (const SCEVAddRecExpr *AR = dyn_cast<SCEVAddRecExpr>(S)) {
-    // Split a non-zero base out of an addrec.
-    if (!AR->getStart()->isZero()) {
-      CollectSubexprs(AR->getStart(), Ops, SE);
-      CollectSubexprs(SE.getAddRecExpr(SE.getIntegerSCEV(0, AR->getType()),
-                                       AR->getStepRecurrence(SE),
-                                       AR->getLoop()), Ops, SE);
-      return;
-    }
-  }
-
-  // Otherwise use the value itself.
-  Ops.push_back(S);
-}
-
 /// isInteresting - Test whether the given expression is "interesting" when
 /// used by the given expression, within the context of analyzing the
 /// given loop.