[JumpThreading] NFC: Don't cache F.hasProfileData()

Summary:
With this patch, we no longer cache F.hasProfileData().  We simply
call the function again.

I'm doing this because:

- JumpThreadingPass also has a member variable named HasProfileData,
  which is very confusing,

- the function is very lightweight, and

- this patch makes JumpThreading::runOnFunction more consistent with
  JumpThreadingPass::run.

Subscribers: hiraditya, jfb, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D70602

llvm/lib/Transforms/Scalar/JumpThreading.cpp

@@ -306,14 +306,13 @@ bool JumpThreading::runOnFunction(Function &F) {
   DomTreeUpdater DTU(*DT, DomTreeUpdater::UpdateStrategy::Lazy);
   std::unique_ptr<BlockFrequencyInfo> BFI;
   std::unique_ptr<BranchProbabilityInfo> BPI;
-  bool HasProfileData = F.hasProfileData();
-  if (HasProfileData) {
+  if (F.hasProfileData()) {
     LoopInfo LI{DominatorTree(F)};
     BPI.reset(new BranchProbabilityInfo(F, LI, TLI));
     BFI.reset(new BlockFrequencyInfo(F, *BPI, LI));
   }
 
-  bool Changed = Impl.runImpl(F, TLI, LVI, AA, &DTU, HasProfileData,
+  bool Changed = Impl.runImpl(F, TLI, LVI, AA, &DTU, F.hasProfileData(),
                               std::move(BFI), std::move(BPI));
   if (PrintLVIAfterJumpThreading) {
     dbgs() << "LVI for function '" << F.getName() << "':\n";