#ifndef LLVM_CODEGEN_PSEUDOSOURCEVALUE_H
#define LLVM_CODEGEN_PSEUDOSOURCEVALUE_H
-#include "llvm/Value.h"
+#include "llvm/ADT/StringMap.h"
+#include "llvm/IR/GlobalValue.h"
+#include "llvm/IR/Value.h"
+#include "llvm/IR/ValueMap.h"
+#include <map>
namespace llvm {
- class MachineFrameInfo;
- class raw_ostream;
-
- /// PseudoSourceValue - Special value supplied for machine level alias
- /// analysis. It indicates that the a memory access references the functions
- /// stack frame (e.g., a spill slot), below the stack frame (e.g., argument
- /// space), or constant pool.
- class PseudoSourceValue : public Value {
- private:
- /// printCustom - Implement printing for PseudoSourceValue. This is called
- /// from Value::print or Value's operator<<.
- ///
- virtual void printCustom(raw_ostream &O) const;
-
- public:
- PseudoSourceValue();
-
- /// isConstant - Test whether the memory pointed to by this
- /// PseudoSourceValue has a constant value.
- ///
- virtual bool isConstant(const MachineFrameInfo *) const;
-
- /// isAliased - Test whether the memory pointed to by this
- /// PseudoSourceValue may also be pointed to by an LLVM IR Value.
- virtual bool isAliased(const MachineFrameInfo *) const;
-
- /// classof - Methods for support type inquiry through isa, cast, and
- /// dyn_cast:
- ///
- static inline bool classof(const PseudoSourceValue *) { return true; }
- static inline bool classof(const Value *V) {
- return V->getValueID() == PseudoSourceValueVal;
- }
-
- /// A pseudo source value referencing a fixed stack frame entry,
- /// e.g., a spill slot.
- static const PseudoSourceValue *getFixedStack(int FI);
-
- /// A pseudo source value referencing the area below the stack frame of
- /// a function, e.g., the argument space.
- static const PseudoSourceValue *getStack();
-
- /// A pseudo source value referencing the global offset table
- /// (or something the like).
- static const PseudoSourceValue *getGOT();
-
- /// A pseudo source value referencing the constant pool. Since constant
- /// pools are constant, this doesn't need to identify a specific constant
- /// pool entry.
- static const PseudoSourceValue *getConstantPool();
-
- /// A pseudo source value referencing a jump table. Since jump tables are
- /// constant, this doesn't need to identify a specific jump table.
- static const PseudoSourceValue *getJumpTable();
+
+class MachineFrameInfo;
+class MachineMemOperand;
+class raw_ostream;
+
+raw_ostream &operator<<(raw_ostream &OS, const MachineMemOperand &MMO);
+
+/// Special value supplied for machine level alias analysis. It indicates that
+/// a memory access references the functions stack frame (e.g., a spill slot),
+/// below the stack frame (e.g., argument space), or constant pool.
+class PseudoSourceValue {
+public:
+ enum PSVKind {
+ Stack,
+ GOT,
+ JumpTable,
+ ConstantPool,
+ FixedStack,
+ GlobalValueCallEntry,
+ ExternalSymbolCallEntry
};
-} // End llvm namespace
+
+private:
+ PSVKind Kind;
+
+ friend class MachineMemOperand; // For printCustom().
+
+ /// Implement printing for PseudoSourceValue. This is called from
+ /// Value::print or Value's operator<<.
+ virtual void printCustom(raw_ostream &O) const;
+
+public:
+ explicit PseudoSourceValue(PSVKind Kind);
+
+ virtual ~PseudoSourceValue();
+
+ PSVKind kind() const { return Kind; }
+
+ bool isStack() const { return Kind == Stack; }
+ bool isGOT() const { return Kind == GOT; }
+ bool isConstantPool() const { return Kind == ConstantPool; }
+ bool isJumpTable() const { return Kind == JumpTable; }
+
+ /// Test whether the memory pointed to by this PseudoSourceValue has a
+ /// constant value.
+ virtual bool isConstant(const MachineFrameInfo *) const;
+
+ /// Test whether the memory pointed to by this PseudoSourceValue may also be
+ /// pointed to by an LLVM IR Value.
+ virtual bool isAliased(const MachineFrameInfo *) const;
+
+ /// Return true if the memory pointed to by this PseudoSourceValue can ever
+ /// alias an LLVM IR Value.
+ virtual bool mayAlias(const MachineFrameInfo *) const;
+};
+
+/// A specialized PseudoSourceValue for holding FixedStack values, which must
+/// include a frame index.
+class FixedStackPseudoSourceValue : public PseudoSourceValue {
+ const int FI;
+
+public:
+ explicit FixedStackPseudoSourceValue(int FI)
+ : PseudoSourceValue(FixedStack), FI(FI) {}
+
+ static inline bool classof(const PseudoSourceValue *V) {
+ return V->kind() == FixedStack;
+ }
+
+ bool isConstant(const MachineFrameInfo *MFI) const override;
+
+ bool isAliased(const MachineFrameInfo *MFI) const override;
+
+ bool mayAlias(const MachineFrameInfo *) const override;
+
+ void printCustom(raw_ostream &OS) const override;
+
+ int getFrameIndex() const { return FI; }
+};
+
+class CallEntryPseudoSourceValue : public PseudoSourceValue {
+protected:
+ CallEntryPseudoSourceValue(PSVKind Kind);
+
+public:
+ bool isConstant(const MachineFrameInfo *) const override;
+ bool isAliased(const MachineFrameInfo *) const override;
+ bool mayAlias(const MachineFrameInfo *) const override;
+};
+
+/// A specialized pseudo soruce value for holding GlobalValue values.
+class GlobalValuePseudoSourceValue : public CallEntryPseudoSourceValue {
+ const GlobalValue *GV;
+
+public:
+ GlobalValuePseudoSourceValue(const GlobalValue *GV);
+
+ static inline bool classof(const PseudoSourceValue *V) {
+ return V->kind() == GlobalValueCallEntry;
+ }
+
+ const GlobalValue *getValue() const { return GV; }
+};
+
+/// A specialized pseudo source value for holding external symbol values.
+class ExternalSymbolPseudoSourceValue : public CallEntryPseudoSourceValue {
+ const char *ES;
+
+public:
+ ExternalSymbolPseudoSourceValue(const char *ES);
+
+ static inline bool classof(const PseudoSourceValue *V) {
+ return V->kind() == ExternalSymbolCallEntry;
+ }
+
+ const char *getSymbol() const { return ES; }
+};
+
+/// Manages creation of pseudo source values.
+class PseudoSourceValueManager {
+ const PseudoSourceValue StackPSV, GOTPSV, JumpTablePSV, ConstantPoolPSV;
+ std::map<int, std::unique_ptr<FixedStackPseudoSourceValue>> FSValues;
+ StringMap<std::unique_ptr<const ExternalSymbolPseudoSourceValue>>
+ ExternalCallEntries;
+ ValueMap<const GlobalValue *,
+ std::unique_ptr<const GlobalValuePseudoSourceValue>>
+ GlobalCallEntries;
+
+public:
+ PseudoSourceValueManager();
+
+ /// Return a pseudo source value referencing the area below the stack frame of
+ /// a function, e.g., the argument space.
+ const PseudoSourceValue *getStack();
+
+ /// Return a pseudo source value referencing the global offset table
+ /// (or something the like).
+ const PseudoSourceValue *getGOT();
+
+ /// Return a pseudo source value referencing the constant pool. Since constant
+ /// pools are constant, this doesn't need to identify a specific constant
+ /// pool entry.
+ const PseudoSourceValue *getConstantPool();
+
+ /// Return a pseudo source value referencing a jump table. Since jump tables
+ /// are constant, this doesn't need to identify a specific jump table.
+ const PseudoSourceValue *getJumpTable();
+
+ /// Return a pseudo source value referencing a fixed stack frame entry,
+ /// e.g., a spill slot.
+ const PseudoSourceValue *getFixedStack(int FI);
+
+ const PseudoSourceValue *getGlobalValueCallEntry(const GlobalValue *GV);
+
+ const PseudoSourceValue *getExternalSymbolCallEntry(const char *ES);
+};
+
+} // end namespace llvm
#endif
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