#define LLVM_TARGET_TARGETREGISTRY_H
#include "llvm/ADT/Triple.h"
-// FIXME: We shouldn't need this header, but we need it until there is a
-// different interface to get the TargetAsmInfo.
-#include "llvm/Target/TargetMachine.h"
-// FIXME: We shouldn't need this header, but we need it until there is a
-// different interface to the target machines.
-#include "llvm/Module.h"
#include <string>
#include <cassert>
namespace llvm {
- class FunctionPass;
+ class AsmPrinter;
class MCAsmParser;
+ class MCCodeEmitter;
class Module;
+ class MCAsmInfo;
class TargetAsmParser;
class TargetMachine;
class formatted_raw_ostream;
/// will be zero initialized), and pass that instance to the TargetRegistry as
/// part of their initialization.
class Target {
- private:
- typedef unsigned (*TripleMatchQualityFnTy)(const std::string &TT);
+ public:
+ friend struct TargetRegistry;
- typedef TargetMachine *(*TargetMachineCtorTy)(const Target &,
- const Module &,
- const std::string &,
- const std::string &);
- typedef FunctionPass *(*AsmPrinterCtorTy)(formatted_raw_ostream &,
- TargetMachine &,
- bool);
- typedef TargetAsmParser *(*AsmParserCtorTy)(const Target &,
- MCAsmParser &);
+ typedef unsigned (*TripleMatchQualityFnTy)(const std::string &TT);
- friend struct TargetRegistry;
+ typedef const MCAsmInfo *(*AsmInfoCtorFnTy)(const Target &T,
+ const StringRef &TT);
+ typedef TargetMachine *(*TargetMachineCtorTy)(const Target &T,
+ const std::string &TT,
+ const std::string &Features);
+ typedef AsmPrinter *(*AsmPrinterCtorTy)(formatted_raw_ostream &OS,
+ TargetMachine &TM,
+ const MCAsmInfo *MAI,
+ bool VerboseAsm);
+ typedef TargetAsmParser *(*AsmParserCtorTy)(const Target &T,
+ MCAsmParser &P);
+ typedef MCCodeEmitter *(*CodeEmitterCtorTy)(const Target &T,
+ TargetMachine &TM,
+ const MCAsmInfo &MAI);
+ private:
/// Next - The next registered target in the linked list, maintained by the
/// TargetRegistry.
Target *Next;
/// HasJIT - Whether this target supports the JIT.
bool HasJIT;
+ AsmInfoCtorFnTy AsmInfoCtorFn;
+
/// TargetMachineCtorFn - Construction function for this target's
/// TargetMachine, if registered.
TargetMachineCtorTy TargetMachineCtorFn;
/// if registered.
AsmParserCtorTy AsmParserCtorFn;
+ /// CodeEmitterCtorFn - Construction function for this target's CodeEmitter,
+ /// if registered.
+ CodeEmitterCtorTy CodeEmitterCtorFn;
+
public:
+ /// @name Target Information
+ /// @{
+
// getNext - Return the next registered target.
const Target *getNext() const { return Next; }
/// getShortDescription - Get a short description of the target.
const char *getShortDescription() const { return ShortDesc; }
+ /// @}
+ /// @name Feature Predicates
+ /// @{
+
+ /// hasJIT - Check if this targets supports the just-in-time compilation.
bool hasJIT() const { return HasJIT; }
/// hasTargetMachine - Check if this target supports code generation.
/// hasAsmParser - Check if this target supports .s parsing.
bool hasAsmParser() const { return AsmParserCtorFn != 0; }
+ /// hasCodeEmitter - Check if this target supports instruction encoding.
+ bool hasCodeEmitter() const { return CodeEmitterCtorFn != 0; }
+
+ /// @}
+ /// @name Feature Constructors
+ /// @{
+
+ /// createAsmInfo - Create a MCAsmInfo implementation for the specified
+ /// target triple.
+ ///
+ /// \arg Triple - This argument is used to determine the target machine
+ /// feature set; it should always be provided. Generally this should be
+ /// either the target triple from the module, or the target triple of the
+ /// host if that does not exist.
+ const MCAsmInfo *createAsmInfo(const StringRef &Triple) const {
+ if (!AsmInfoCtorFn)
+ return 0;
+ return AsmInfoCtorFn(*this, Triple);
+ }
+
/// createTargetMachine - Create a target specific machine implementation
- /// for the module \arg M and \arg Triple.
+ /// for the specified \arg Triple.
///
- /// \arg M - This argument is used for some machines to access the target
- /// data.
/// \arg Triple - This argument is used to determine the target machine
/// feature set; it should always be provided. Generally this should be
/// either the target triple from the module, or the target triple of the
/// host if that does not exist.
- TargetMachine *createTargetMachine(const Module &M,
- const std::string &Triple,
+ TargetMachine *createTargetMachine(const std::string &Triple,
const std::string &Features) const {
if (!TargetMachineCtorFn)
return 0;
- return TargetMachineCtorFn(*this, M, Triple, Features);
+ return TargetMachineCtorFn(*this, Triple, Features);
}
/// createAsmPrinter - Create a target specific assembly printer pass.
- FunctionPass *createAsmPrinter(formatted_raw_ostream &OS,
- TargetMachine &M,
- bool Verbose) const {
+ AsmPrinter *createAsmPrinter(formatted_raw_ostream &OS, TargetMachine &TM,
+ const MCAsmInfo *MAI, bool Verbose) const {
if (!AsmPrinterCtorFn)
return 0;
- return AsmPrinterCtorFn(OS, M, Verbose);
+ return AsmPrinterCtorFn(OS, TM, MAI, Verbose);
}
/// createAsmParser - Create a target specific assembly parser.
return 0;
return AsmParserCtorFn(*this, Parser);
}
+
+ /// createCodeEmitter - Create a target specific code emitter.
+ MCCodeEmitter *createCodeEmitter(TargetMachine &TM,
+ const MCAsmInfo *MAI) const {
+ if (!CodeEmitterCtorFn)
+ return 0;
+ return CodeEmitterCtorFn(*this, TM, *MAI);
+ }
+
+ /// @}
};
/// TargetRegistry - Generic interface to target specific features.
- //
- // FIXME: Provide Target* iterator.
struct TargetRegistry {
class iterator {
const Target *Current;
/// lookupTarget - Lookup a target based on a target triple.
///
/// \param Triple - The triple to use for finding a target.
- /// \param FallbackToHost - If true and no target is found for the given
- /// \arg Triple, then the host's triple will be used.
- /// \param RequireJIT - Require the target to support JIT compilation.
/// \param Error - On failure, an error string describing why no target was
/// found.
static const Target *lookupTarget(const std::string &Triple,
- bool FallbackToHost,
- bool RequireJIT,
std::string &Error);
/// getClosestTargetForJIT - Pick the best target that is compatible with
/// the current host. If no close target can be found, this returns null
/// and sets the Error string to a reason.
///
- /// Mainted for compatibility through 2.6.
- static const Target *getClosestTargetForJIT(std::string &Error) {
- return lookupTarget("", true, true, Error);
- }
+ /// Maintained for compatibility through 2.6.
+ static const Target *getClosestTargetForJIT(std::string &Error);
/// @}
/// @name Target Registration
const char *ShortDesc,
Target::TripleMatchQualityFnTy TQualityFn,
bool HasJIT = false);
-
+
+ /// RegisterAsmInfo - Register a MCAsmInfo implementation for the
+ /// given target.
+ ///
+ /// Clients are responsible for ensuring that registration doesn't occur
+ /// while another thread is attempting to access the registry. Typically
+ /// this is done by initializing all targets at program startup.
+ ///
+ /// @param T - The target being registered.
+ /// @param Fn - A function to construct a MCAsmInfo for the target.
+ static void RegisterAsmInfo(Target &T, Target::AsmInfoCtorFnTy Fn) {
+ // Ignore duplicate registration.
+ if (!T.AsmInfoCtorFn)
+ T.AsmInfoCtorFn = Fn;
+ }
+
/// RegisterTargetMachine - Register a TargetMachine implementation for the
/// given target.
///
T.AsmParserCtorFn = Fn;
}
+ /// RegisterCodeEmitter - Register a MCCodeEmitter implementation for the
+ /// given target.
+ ///
+ /// Clients are responsible for ensuring that registration doesn't occur
+ /// while another thread is attempting to access the registry. Typically
+ /// this is done by initializing all targets at program startup.
+ ///
+ /// @param T - The target being registered.
+ /// @param Fn - A function to construct an AsmPrinter for the target.
+ static void RegisterCodeEmitter(Target &T, Target::CodeEmitterCtorTy Fn) {
+ if (!T.CodeEmitterCtorFn)
+ T.CodeEmitterCtorFn = Fn;
+ }
+
/// @}
};
}
};
+ /// RegisterAsmInfo - Helper template for registering a target assembly info
+ /// implementation. This invokes the static "Create" method on the class to
+ /// actually do the construction. Usage:
+ ///
+ /// extern "C" void LLVMInitializeFooTarget() {
+ /// extern Target TheFooTarget;
+ /// RegisterAsmInfo<FooMCAsmInfo> X(TheFooTarget);
+ /// }
+ template<class MCAsmInfoImpl>
+ struct RegisterAsmInfo {
+ RegisterAsmInfo(Target &T) {
+ TargetRegistry::RegisterAsmInfo(T, &Allocator);
+ }
+ private:
+ static const MCAsmInfo *Allocator(const Target &T, const StringRef &TT) {
+ return new MCAsmInfoImpl(T, TT);
+ }
+
+ };
+
+ /// RegisterAsmInfoFn - Helper template for registering a target assembly info
+ /// implementation. This invokes the specified function to do the
+ /// construction. Usage:
+ ///
+ /// extern "C" void LLVMInitializeFooTarget() {
+ /// extern Target TheFooTarget;
+ /// RegisterAsmInfoFn X(TheFooTarget, TheFunction);
+ /// }
+ struct RegisterAsmInfoFn {
+ RegisterAsmInfoFn(Target &T, Target::AsmInfoCtorFnTy Fn) {
+ TargetRegistry::RegisterAsmInfo(T, Fn);
+ }
+ };
+
+
/// RegisterTargetMachine - Helper template for registering a target machine
/// implementation, for use in the target machine initialization
/// function. Usage:
}
private:
- static TargetMachine *Allocator(const Target &T, const Module &M,
- const std::string &TT,
+ static TargetMachine *Allocator(const Target &T, const std::string &TT,
const std::string &FS) {
return new TargetMachineImpl(T, TT, FS);
}
};
- template<class TargetMachineImpl>
- struct RegisterTargetMachineDeprecated {
- RegisterTargetMachineDeprecated(Target &T) {
- TargetRegistry::RegisterTargetMachine(T, &Allocator);
- }
-
- private:
- static TargetMachine *Allocator(const Target &T, const Module &M,
- const std::string &TT,
- const std::string &FS) {
- return new TargetMachineImpl(T, M, FS);
- }
- };
-
/// RegisterAsmPrinter - Helper template for registering a target specific
/// assembly printer, for use in the target machine initialization
/// function. Usage:
}
private:
- static FunctionPass *Allocator(formatted_raw_ostream &OS,
- TargetMachine &TM,
- bool Verbose) {
- return new AsmPrinterImpl(OS, TM, TM.getTargetAsmInfo(), Verbose);
+ static AsmPrinter *Allocator(formatted_raw_ostream &OS, TargetMachine &TM,
+ const MCAsmInfo *MAI, bool Verbose) {
+ return new AsmPrinterImpl(OS, TM, MAI, Verbose);
}
};
}
};
+ /// RegisterCodeEmitter - Helper template for registering a target specific
+ /// machine code emitter, for use in the target initialization
+ /// function. Usage:
+ ///
+ /// extern "C" void LLVMInitializeFooCodeEmitter() {
+ /// extern Target TheFooTarget;
+ /// RegisterCodeEmitter<FooCodeEmitter> X(TheFooTarget);
+ /// }
+ template<class CodeEmitterImpl>
+ struct RegisterCodeEmitter {
+ RegisterCodeEmitter(Target &T) {
+ TargetRegistry::RegisterCodeEmitter(T, &Allocator);
+ }
+
+ private:
+ static MCCodeEmitter *Allocator(const Target &T, TargetMachine &TM,
+ const MCAsmInfo &MAI) {
+ return new CodeEmitterImpl(T, TM, MAI);
+ }
+ };
+
}
#endif
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