class TargetInstrInfo;
class TargetInstrDescriptor;
+class TargetJITInfo;
class TargetSchedInfo;
class TargetRegInfo;
class TargetFrameInfo;
-class TargetCacheInfo;
class MachineCodeEmitter;
class MRegisterInfo;
class FunctionPassManager;
class PassManager;
class Pass;
+class IntrinsicLowering;
//===----------------------------------------------------------------------===//
///
///
class TargetMachine {
const std::string Name;
- const TargetData DataLayout; // Calculates type size & alignment
+ const TargetData DataLayout; // Calculates type size & alignment
+ IntrinsicLowering *IL; // Specifies how to lower intrinsic calls
TargetMachine(const TargetMachine&); // DO NOT IMPLEMENT
void operator=(const TargetMachine&); // DO NOT IMPLEMENT
-protected:
- TargetMachine(const std::string &name, // Can only create subclasses...
+protected: // Can only create subclasses...
+ TargetMachine(const std::string &name, IntrinsicLowering *IL,
bool LittleEndian = false,
unsigned char PtrSize = 8, unsigned char PtrAl = 8,
unsigned char DoubleAl = 8, unsigned char FloatAl = 4,
unsigned char LongAl = 8, unsigned char IntAl = 4,
- unsigned char ShortAl = 2, unsigned char ByteAl = 1)
- : Name(name), DataLayout(name, LittleEndian,
- PtrSize, PtrAl, DoubleAl, FloatAl, LongAl,
- IntAl, ShortAl, ByteAl) {}
+ unsigned char ShortAl = 2, unsigned char ByteAl = 1);
+
+ // This constructor is used for targets that support arbitrary TargetData
+ // layouts, like the C backend. It initializes the TargetData to match that
+ // of the specified module.
+ TargetMachine(const std::string &name, IntrinsicLowering *IL,
+ const Module &M);
public:
- virtual ~TargetMachine() {}
+ virtual ~TargetMachine();
const std::string &getName() const { return Name; }
+
+ // getIntrinsicLowering - This method returns a reference to an
+ // IntrinsicLowering instance which should be used by the code generator to
+ // lower unknown intrinsic functions to the equivalent LLVM expansion.
+ IntrinsicLowering &getIntrinsicLowering() const { return *IL; }
// Interfaces to the major aspects of target machine information:
// -- Instruction opcode and operand information
virtual const TargetSchedInfo& getSchedInfo() const = 0;
virtual const TargetRegInfo& getRegInfo() const = 0;
virtual const TargetFrameInfo& getFrameInfo() const = 0;
- virtual const TargetCacheInfo& getCacheInfo() const = 0;
const TargetData &getTargetData() const { return DataLayout; }
/// getRegisterInfo - If register information is available, return it. If
///
virtual const MRegisterInfo* getRegisterInfo() const { return 0; }
- // Data storage information
+ /// getJITInfo - If this target supports a JIT, return information for it,
+ /// otherwise return null.
+ ///
+ virtual TargetJITInfo *getJITInfo() { return 0; }
+
+ // Data storage information. FIXME, this should be moved out to sparc
+ // specific code.
//
virtual unsigned findOptimalStorageSize(const Type* ty) const;
- /// addPassesToJITCompile - Add passes to the specified pass manager to
- /// implement a fast dynamic compiler for this target. Return true if this is
- /// not supported for this target.
- ///
- virtual bool addPassesToJITCompile(FunctionPassManager &PM) { return true; }
-
/// addPassesToEmitAssembly - Add passes to the specified pass manager to get
/// assembly langage code emitted. Typically this will involve several steps
/// of code generation. This method should return true if assembly emission
MachineCodeEmitter &MCE) {
return true;
}
-
- /// replaceMachineCodeForFunction - Make it so that calling the
- /// function whose machine code is at OLD turns into a call to NEW,
- /// perhaps by overwriting OLD with a branch to NEW. FIXME: this is
- /// JIT-specific.
- ///
- virtual void replaceMachineCodeForFunction (void *Old, void *New) {
- assert (0 && "Current target cannot replace machine code for functions");
- }
};
} // End llvm namespace