1 files changed, 180 insertions, 0 deletions
diff --git a/contrib/llvm/include/llvm/CodeGen/MachineRegionInfo.h b/contrib/llvm/include/llvm/CodeGen/MachineRegionInfo.h
new file mode 100644
index 0000000..df9823f
--- /dev/null
+++ b/contrib/llvm/include/llvm/CodeGen/MachineRegionInfo.h
@@ -0,0 +1,180 @@
+//===- llvm/CodeGen/MachineRegionInfo.h -------------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_CODEGEN_MACHINEREGIONINFO_H
+#define LLVM_CODEGEN_MACHINEREGIONINFO_H
+
+#include "llvm/Analysis/RegionInfo.h"
+#include "llvm/Analysis/RegionIterator.h"
+#include "llvm/CodeGen/MachineDominanceFrontier.h"
+#include "llvm/CodeGen/MachineDominators.h"
+#include "llvm/CodeGen/MachineFunction.h"
+#include "llvm/CodeGen/MachineFunctionPass.h"
+#include "llvm/CodeGen/MachineLoopInfo.h"
+
+
+namespace llvm {
+
+class MachineDominatorTree;
+struct MachinePostDominatorTree;
+class MachineRegion;
+class MachineRegionNode;
+class MachineRegionInfo;
+
+template<>
+struct RegionTraits<MachineFunction> {
+  typedef MachineFunction FuncT;
+  typedef MachineBasicBlock BlockT;
+  typedef MachineRegion RegionT;
+  typedef MachineRegionNode RegionNodeT;
+  typedef MachineRegionInfo RegionInfoT;
+  typedef MachineDominatorTree DomTreeT;
+  typedef MachineDomTreeNode DomTreeNodeT;
+  typedef MachinePostDominatorTree PostDomTreeT;
+  typedef MachineDominanceFrontier DomFrontierT;
+  typedef MachineInstr InstT;
+  typedef MachineLoop LoopT;
+  typedef MachineLoopInfo LoopInfoT;
+
+  static unsigned getNumSuccessors(MachineBasicBlock *BB) {
+    return BB->succ_size();
+  }
+};
+
+
+class MachineRegionNode : public RegionNodeBase<RegionTraits<MachineFunction>> {
+public:
+  inline MachineRegionNode(MachineRegion *Parent,
+                           MachineBasicBlock *Entry,
+                           bool isSubRegion = false)
+    : RegionNodeBase<RegionTraits<MachineFunction>>(Parent, Entry, isSubRegion) {
+
+  }
+
+  bool operator==(const MachineRegion &RN) const {
+    return this == reinterpret_cast<const MachineRegionNode*>(&RN);
+  }
+};
+
+class MachineRegion : public RegionBase<RegionTraits<MachineFunction>> {
+public:
+  MachineRegion(MachineBasicBlock *Entry, MachineBasicBlock *Exit,
+                MachineRegionInfo* RI,
+                MachineDominatorTree *DT, MachineRegion *Parent = nullptr);
+  ~MachineRegion();
+
+  bool operator==(const MachineRegionNode &RN) const {
+    return &RN == reinterpret_cast<const MachineRegionNode*>(this);
+  }
+};
+
+class MachineRegionInfo : public RegionInfoBase<RegionTraits<MachineFunction>> {
+public:
+  explicit MachineRegionInfo();
+
+  ~MachineRegionInfo() override;
+
+  // updateStatistics - Update statistic about created regions.
+  void updateStatistics(MachineRegion *R) final;
+
+  void recalculate(MachineFunction &F,
+                   MachineDominatorTree *DT,
+                   MachinePostDominatorTree *PDT,
+                   MachineDominanceFrontier *DF);
+};
+
+class MachineRegionInfoPass : public MachineFunctionPass {
+  MachineRegionInfo RI;
+
+public:
+  static char ID;
+  explicit MachineRegionInfoPass();
+
+  ~MachineRegionInfoPass() override;
+
+  MachineRegionInfo &getRegionInfo() {
+    return RI;
+  }
+
+  const MachineRegionInfo &getRegionInfo() const {
+    return RI;
+  }
+
+  /// @name MachineFunctionPass interface
+  //@{
+  bool runOnMachineFunction(MachineFunction &F) override;
+  void releaseMemory() override;
+  void verifyAnalysis() const override;
+  void getAnalysisUsage(AnalysisUsage &AU) const override;
+  void print(raw_ostream &OS, const Module *) const override;
+  void dump() const;
+  //@}
+};
+
+
+template <>
+template <>
+inline MachineBasicBlock* RegionNodeBase<RegionTraits<MachineFunction>>::getNodeAs<MachineBasicBlock>() const {
+  assert(!isSubRegion() && "This is not a MachineBasicBlock RegionNode!");
+  return getEntry();
+}
+
+template<>
+template<>
+inline MachineRegion* RegionNodeBase<RegionTraits<MachineFunction>>::getNodeAs<MachineRegion>() const {
+  assert(isSubRegion() && "This is not a subregion RegionNode!");
+  auto Unconst = const_cast<RegionNodeBase<RegionTraits<MachineFunction>>*>(this);
+  return reinterpret_cast<MachineRegion*>(Unconst);
+}
+
+
+RegionNodeGraphTraits(MachineRegionNode, MachineBasicBlock, MachineRegion);
+RegionNodeGraphTraits(const MachineRegionNode, MachineBasicBlock, MachineRegion);
+
+RegionGraphTraits(MachineRegion, MachineRegionNode);
+RegionGraphTraits(const MachineRegion, const MachineRegionNode);
+
+template <> struct GraphTraits<MachineRegionInfo*>
+  : public GraphTraits<FlatIt<MachineRegionNode*> > {
+  typedef df_iterator<NodeType*, SmallPtrSet<NodeType*, 8>, false,
+                      GraphTraits<FlatIt<NodeType*> > > nodes_iterator;
+
+  static NodeType *getEntryNode(MachineRegionInfo *RI) {
+    return GraphTraits<FlatIt<MachineRegion*> >::getEntryNode(RI->getTopLevelRegion());
+  }
+  static nodes_iterator nodes_begin(MachineRegionInfo* RI) {
+    return nodes_iterator::begin(getEntryNode(RI));
+  }
+  static nodes_iterator nodes_end(MachineRegionInfo *RI) {
+    return nodes_iterator::end(getEntryNode(RI));
+  }
+};
+
+template <> struct GraphTraits<MachineRegionInfoPass*>
+  : public GraphTraits<MachineRegionInfo *> {
+  typedef df_iterator<NodeType*, SmallPtrSet<NodeType*, 8>, false,
+                      GraphTraits<FlatIt<NodeType*> > > nodes_iterator;
+
+  static NodeType *getEntryNode(MachineRegionInfoPass *RI) {
+    return GraphTraits<MachineRegionInfo*>::getEntryNode(&RI->getRegionInfo());
+  }
+  static nodes_iterator nodes_begin(MachineRegionInfoPass* RI) {
+    return GraphTraits<MachineRegionInfo*>::nodes_begin(&RI->getRegionInfo());
+  }
+  static nodes_iterator nodes_end(MachineRegionInfoPass *RI) {
+    return GraphTraits<MachineRegionInfo*>::nodes_end(&RI->getRegionInfo());
+  }
+};
+
+extern template class RegionBase<RegionTraits<MachineFunction>>;
+extern template class RegionNodeBase<RegionTraits<MachineFunction>>;
+extern template class RegionInfoBase<RegionTraits<MachineFunction>>;
+}
+
+#endif