[Scalar][NFC] Minor cleanups in CallSiteSplitting.cpp

Author: alexander-shaposhnikov

llvm/lib/Transforms/Scalar/CallSiteSplitting.cpp

@@ -123,8 +123,8 @@ static bool isCondRelevantToAnyCallArgument(ICmpInst *Cmp, CallBase &CB) {
   return false;
 }
 
-typedef std::pair<ICmpInst *, unsigned> ConditionTy;
-typedef SmallVector<ConditionTy, 2> ConditionsTy;
+using ConditionTy = std::pair<ICmpInst *, unsigned>;
+using ConditionsTy = SmallVector<ConditionTy, 2>;
 
 /// If From has a conditional jump to To, add the condition to Conditions,
 /// if it is relevant to any argument at CB.
@@ -301,10 +301,9 @@ static void copyMustTailReturn(BasicBlock *SplitBB, Instruction *CI,
 /// Note that in case any arguments at the call-site are constrained by its
 /// predecessors, new call-sites with more constrained arguments will be
 /// created in createCallSitesOnPredicatedArgument().
-static void splitCallSite(
-    CallBase &CB,
-    const SmallVectorImpl<std::pair<BasicBlock *, ConditionsTy>> &Preds,
-    DomTreeUpdater &DTU) {
+static void splitCallSite(CallBase &CB,
+                          ArrayRef<std::pair<BasicBlock *, ConditionsTy>> Preds,
+                          DomTreeUpdater &DTU) {
   BasicBlock *TailBB = CB.getParent();
   bool IsMustTailCall = CB.isMustTailCall();