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//===- 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_INSTANTIATION(class RegionBase<RegionTraits<MachineFunction>>);
EXTERN_TEMPLATE_INSTANTIATION(class RegionNodeBase<RegionTraits<MachineFunction>>);
EXTERN_TEMPLATE_INSTANTIATION(class RegionInfoBase<RegionTraits<MachineFunction>>);
}
#endif
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