[llvm] Stop including llvm/ADT/DepthFirstIterator.h (NFC)

Identified with misc-include-cleaner.

Author: kazutakahirata

llvm/lib/Analysis/LoopAccessAnalysis.cpp

@@ -14,7 +14,6 @@
 #include "llvm/Analysis/LoopAccessAnalysis.h"
 #include "llvm/ADT/APInt.h"
 #include "llvm/ADT/DenseMap.h"
-#include "llvm/ADT/DepthFirstIterator.h"
 #include "llvm/ADT/EquivalenceClasses.h"
 #include "llvm/ADT/PointerIntPair.h"
 #include "llvm/ADT/STLExtras.h"

llvm/lib/Analysis/RegionPrinter.cpp

@@ -9,7 +9,6 @@
 //===----------------------------------------------------------------------===//
 
 #include "llvm/Analysis/RegionPrinter.h"
-#include "llvm/ADT/DepthFirstIterator.h"
 #include "llvm/Analysis/DOTGraphTraitsPass.h"
 #include "llvm/Analysis/RegionInfo.h"
 #include "llvm/Analysis/RegionIterator.h"

llvm/lib/Target/AArch64/AArch64StackTagging.cpp

@@ -12,7 +12,6 @@
 #include "AArch64Subtarget.h"
 #include "AArch64TargetMachine.h"
 #include "llvm/ADT/DenseMap.h"
-#include "llvm/ADT/DepthFirstIterator.h"
 #include "llvm/ADT/MapVector.h"
 #include "llvm/ADT/SmallVector.h"
 #include "llvm/ADT/Statistic.h"

llvm/lib/Target/AArch64/AArch64StackTaggingPreRA.cpp

@@ -10,7 +10,6 @@
 #include "AArch64.h"
 #include "AArch64MachineFunctionInfo.h"
 #include "AArch64InstrInfo.h"
-#include "llvm/ADT/DepthFirstIterator.h"
 #include "llvm/ADT/SetVector.h"
 #include "llvm/ADT/Statistic.h"
 #include "llvm/CodeGen/MachineBranchProbabilityInfo.h"

llvm/lib/Target/X86/X86FastPreTileConfig.cpp

@@ -20,7 +20,6 @@
 #include "X86MachineFunctionInfo.h"
 #include "X86RegisterInfo.h"
 #include "X86Subtarget.h"
-#include "llvm/ADT/DepthFirstIterator.h"
 #include "llvm/ADT/PostOrderIterator.h"
 #include "llvm/ADT/Statistic.h"
 #include "llvm/CodeGen/MachineFrameInfo.h"

llvm/lib/Transforms/Vectorize/VPlan.cpp

@@ -19,7 +19,6 @@
 #include "VPlan.h"
 #include "VPlanCFG.h"
 #include "VPlanDominatorTree.h"
-#include "llvm/ADT/DepthFirstIterator.h"
 #include "llvm/ADT/PostOrderIterator.h"
 #include "llvm/ADT/STLExtras.h"
 #include "llvm/ADT/SmallVector.h"