[NFC][LLVM] Namespace cleanup in LoopPassManager/LoopVersioningLICM (llvm#163759)

Author: jurahul

llvm/lib/Transforms/Scalar/LoopPassManager.cpp

@@ -16,8 +16,6 @@
 
 using namespace llvm;
 
-namespace llvm {
-
 /// Explicitly specialize the pass manager's run method to handle loop nest
 /// structure updates.
 PreservedAnalyses
@@ -185,14 +183,14 @@ LoopPassManager::runWithoutLoopNestPasses(Loop &L, LoopAnalysisManager &AM,
   }
   return PA;
 }
-} // namespace llvm
 
 void FunctionToLoopPassAdaptor::printPipeline(
     raw_ostream &OS, function_ref<StringRef(StringRef)> MapClassName2PassName) {
   OS << (UseMemorySSA ? "loop-mssa(" : "loop(");
   Pass->printPipeline(OS, MapClassName2PassName);
   OS << ')';
 }
+
 PreservedAnalyses FunctionToLoopPassAdaptor::run(Function &F,
                                                  FunctionAnalysisManager &AM) {
   // Before we even compute any loop analyses, first run a miniature function

llvm/lib/Transforms/Scalar/LoopVersioningLICM.cpp

@@ -540,8 +540,6 @@ bool LoopVersioningLICM::run(DominatorTree *DT) {
   return Changed;
 }
 
-namespace llvm {
-
 PreservedAnalyses LoopVersioningLICMPass::run(Loop &L, LoopAnalysisManager &AM,
                                               LoopStandardAnalysisResults &LAR,
                                               LPMUpdater &U) {
@@ -556,4 +554,3 @@ PreservedAnalyses LoopVersioningLICMPass::run(Loop &L, LoopAnalysisManager &AM,
     return PreservedAnalyses::all();
   return getLoopPassPreservedAnalyses();
 }
-} // namespace llvm