#include "llvm/Target/TargetInstrItineraries.h"
#include <cassert>
-#include <string>
namespace llvm {
+class Target;
class TargetAsmInfo;
class TargetData;
class TargetSubtarget;
class TargetInstrInfo;
-class TargetInstrDescriptor;
+class TargetIntrinsicInfo;
class TargetJITInfo;
class TargetLowering;
class TargetFrameInfo;
class MachineCodeEmitter;
-class MRegisterInfo;
-class Module;
-class FunctionPassManager;
+class JITCodeEmitter;
+class ObjectCodeEmitter;
+class TargetRegisterInfo;
+class PassManagerBase;
class PassManager;
class Pass;
class TargetMachOWriterInfo;
class TargetELFWriterInfo;
+class formatted_raw_ostream;
// Relocation model types.
namespace Reloc {
};
}
+// Code generation optimization level.
+namespace CodeGenOpt {
+ enum Level {
+ Default,
+ None,
+ Aggressive
+ };
+}
+
+
+// Possible float ABI settings. Used with FloatABIType in TargetOptions.h.
+namespace FloatABI {
+ enum ABIType {
+ Default, // Target-specific (either soft of hard depending on triple, etc).
+ Soft, // Soft float.
+ Hard // Hard float.
+ };
+}
+
//===----------------------------------------------------------------------===//
///
/// TargetMachine - Primary interface to the complete machine description for
TargetMachine(const TargetMachine &); // DO NOT IMPLEMENT
void operator=(const TargetMachine &); // DO NOT IMPLEMENT
protected: // Can only create subclasses.
- TargetMachine() : AsmInfo(NULL) { }
+ TargetMachine(const Target &);
/// getSubtargetImpl - virtual method implemented by subclasses that returns
/// a reference to that target's TargetSubtarget-derived member variable.
virtual const TargetSubtarget *getSubtargetImpl() const { return 0; }
+
+ /// TheTarget - The Target that this machine was created for.
+ const Target &TheTarget;
/// AsmInfo - Contains target specific asm information.
///
/// createTargetAsmInfo - Create a new instance of target specific asm
/// information.
- virtual const TargetAsmInfo *createTargetAsmInfo() const { return NULL; }
+ virtual const TargetAsmInfo *createTargetAsmInfo() const { return 0; }
public:
virtual ~TargetMachine();
- /// getModuleMatchQuality - This static method should be implemented by
- /// targets to indicate how closely they match the specified module. This is
- /// used by the LLC tool to determine which target to use when an explicit
- /// -march option is not specified. If a target returns zero, it will never
- /// be chosen without an explicit -march option.
- static unsigned getModuleMatchQuality(const Module &M) { return 0; }
-
- /// getJITMatchQuality - This static method should be implemented by targets
- /// that provide JIT capabilities to indicate how suitable they are for
- /// execution on the current host. If a value of 0 is returned, the target
- /// will not be used unless an explicit -march option is used.
- static unsigned getJITMatchQuality() { return 0; }
+ const Target &getTarget() const { return TheTarget; }
// Interfaces to the major aspects of target machine information:
// -- Instruction opcode and operand information
virtual TargetLowering *getTargetLowering() const { return 0; }
virtual const TargetData *getTargetData() const { return 0; }
-
/// getTargetAsmInfo - Return target specific asm information.
///
const TargetAsmInfo *getTargetAsmInfo() const {
/// not, return null. This is kept separate from RegInfo until RegInfo has
/// details of graph coloring register allocation removed from it.
///
- virtual const MRegisterInfo *getRegisterInfo() const { return 0; }
+ virtual const TargetRegisterInfo *getRegisterInfo() const { return 0; }
+
+ /// getIntrinsicInfo - If intrinsic information is available, return it. If
+ /// not, return null.
+ ///
+ virtual const TargetIntrinsicInfo *getIntrinsicInfo() const { return 0; }
/// getJITInfo - If this target supports a JIT, return information for it,
/// otherwise return null.
static Reloc::Model getRelocationModel();
/// setRelocationModel - Sets the code generation relocation model.
+ ///
static void setRelocationModel(Reloc::Model Model);
/// getCodeModel - Returns the code model. The choices are small, kernel,
static CodeModel::Model getCodeModel();
/// setCodeModel - Sets the code model.
+ ///
static void setCodeModel(CodeModel::Model Model);
+ /// getAsmVerbosityDefault - Returns the default value of asm verbosity.
+ ///
+ static bool getAsmVerbosityDefault();
+
+ /// setAsmVerbosityDefault - Set the default value of asm verbosity. Default
+ /// is false.
+ static void setAsmVerbosityDefault(bool);
+
/// CodeGenFileType - These enums are meant to be passed into
/// addPassesToEmitFile to indicate what type of file to emit.
enum CodeGenFileType {
/// This method should return FileModel::Error if emission of this file type
/// is not supported.
///
- virtual FileModel::Model addPassesToEmitFile(FunctionPassManager &PM,
- std::ostream &Out,
- CodeGenFileType FileType,
- bool Fast) {
+ virtual FileModel::Model addPassesToEmitFile(PassManagerBase &,
+ formatted_raw_ostream &,
+ CodeGenFileType,
+ CodeGenOpt::Level) {
return FileModel::None;
}
/// to be split up (e.g., to add an object writer pass), this method can be
/// used to finish up adding passes to emit the file, if necessary.
///
- virtual bool addPassesToEmitFileFinish(FunctionPassManager &PM,
- MachineCodeEmitter *MCE, bool Fast) {
+ virtual bool addPassesToEmitFileFinish(PassManagerBase &,
+ MachineCodeEmitter *,
+ CodeGenOpt::Level) {
+ return true;
+ }
+
+ /// addPassesToEmitFileFinish - If the passes to emit the specified file had
+ /// to be split up (e.g., to add an object writer pass), this method can be
+ /// used to finish up adding passes to emit the file, if necessary.
+ ///
+ virtual bool addPassesToEmitFileFinish(PassManagerBase &,
+ JITCodeEmitter *,
+ CodeGenOpt::Level) {
+ return true;
+ }
+
+ /// addPassesToEmitFileFinish - If the passes to emit the specified file had
+ /// to be split up (e.g., to add an object writer pass), this method can be
+ /// used to finish up adding passes to emit the file, if necessary.
+ ///
+ virtual bool addPassesToEmitFileFinish(PassManagerBase &,
+ ObjectCodeEmitter *,
+ CodeGenOpt::Level) {
return true;
}
/// of functions. This method returns true if machine code emission is
/// not supported.
///
- virtual bool addPassesToEmitMachineCode(FunctionPassManager &PM,
- MachineCodeEmitter &MCE, bool Fast) {
+ virtual bool addPassesToEmitMachineCode(PassManagerBase &,
+ MachineCodeEmitter &,
+ CodeGenOpt::Level) {
+ return true;
+ }
+
+ /// addPassesToEmitMachineCode - Add passes to the specified pass manager to
+ /// get machine code emitted. This uses a MachineCodeEmitter object to handle
+ /// actually outputting the machine code and resolving things like the address
+ /// of functions. This method returns true if machine code emission is
+ /// not supported.
+ ///
+ virtual bool addPassesToEmitMachineCode(PassManagerBase &,
+ JITCodeEmitter &,
+ CodeGenOpt::Level) {
return true;
}
/// require having the entire module at once. This is not recommended, do not
/// use this.
virtual bool WantsWholeFile() const { return false; }
- virtual bool addPassesToEmitWholeFile(PassManager &PM, std::ostream &Out,
- CodeGenFileType FileType, bool Fast) {
+ virtual bool addPassesToEmitWholeFile(PassManager &, formatted_raw_ostream &,
+ CodeGenFileType,
+ CodeGenOpt::Level) {
return true;
}
};
///
class LLVMTargetMachine : public TargetMachine {
protected: // Can only create subclasses.
- LLVMTargetMachine() { }
+ LLVMTargetMachine(const Target &T) : TargetMachine(T) { }
+
+ /// addCommonCodeGenPasses - Add standard LLVM codegen passes used for
+ /// both emitting to assembly files or machine code output.
+ ///
+ bool addCommonCodeGenPasses(PassManagerBase &, CodeGenOpt::Level);
+
public:
/// addPassesToEmitFile - Add passes to the specified pass manager to get the
/// specified file emitted. Typically this will involve several steps of code
- /// generation. If Fast is set to true, the code generator should emit code
- /// as fast as possible, though the generated code may be less efficient.
- /// This method should return FileModel::Error if emission of this file type
- /// is not supported.
+ /// generation. If OptLevel is None, the code generator should emit code as fast
+ /// as possible, though the generated code may be less efficient. This method
+ /// should return FileModel::Error if emission of this file type is not
+ /// supported.
///
/// The default implementation of this method adds components from the
/// LLVM retargetable code generator, invoking the methods below to get
/// target-specific passes in standard locations.
///
- virtual FileModel::Model addPassesToEmitFile(FunctionPassManager &PM,
- std::ostream &Out,
+ virtual FileModel::Model addPassesToEmitFile(PassManagerBase &PM,
+ formatted_raw_ostream &Out,
CodeGenFileType FileType,
- bool Fast);
+ CodeGenOpt::Level);
/// addPassesToEmitFileFinish - If the passes to emit the specified file had
/// to be split up (e.g., to add an object writer pass), this method can be
/// used to finish up adding passes to emit the file, if necessary.
///
- virtual bool addPassesToEmitFileFinish(FunctionPassManager &PM,
- MachineCodeEmitter *MCE, bool Fast);
+ virtual bool addPassesToEmitFileFinish(PassManagerBase &PM,
+ MachineCodeEmitter *MCE,
+ CodeGenOpt::Level);
+
+ /// addPassesToEmitFileFinish - If the passes to emit the specified file had
+ /// to be split up (e.g., to add an object writer pass), this method can be
+ /// used to finish up adding passes to emit the file, if necessary.
+ ///
+ virtual bool addPassesToEmitFileFinish(PassManagerBase &PM,
+ JITCodeEmitter *JCE,
+ CodeGenOpt::Level);
+ /// addPassesToEmitFileFinish - If the passes to emit the specified file had
+ /// to be split up (e.g., to add an object writer pass), this method can be
+ /// used to finish up adding passes to emit the file, if necessary.
+ ///
+ virtual bool addPassesToEmitFileFinish(PassManagerBase &PM,
+ ObjectCodeEmitter *OCE,
+ CodeGenOpt::Level);
+
+ /// addPassesToEmitMachineCode - Add passes to the specified pass manager to
+ /// get machine code emitted. This uses a MachineCodeEmitter object to handle
+ /// actually outputting the machine code and resolving things like the address
+ /// of functions. This method returns true if machine code emission is
+ /// not supported.
+ ///
+ virtual bool addPassesToEmitMachineCode(PassManagerBase &PM,
+ MachineCodeEmitter &MCE,
+ CodeGenOpt::Level);
+
/// addPassesToEmitMachineCode - Add passes to the specified pass manager to
/// get machine code emitted. This uses a MachineCodeEmitter object to handle
/// actually outputting the machine code and resolving things like the address
/// of functions. This method returns true if machine code emission is
/// not supported.
///
- virtual bool addPassesToEmitMachineCode(FunctionPassManager &PM,
- MachineCodeEmitter &MCE, bool Fast);
+ virtual bool addPassesToEmitMachineCode(PassManagerBase &PM,
+ JITCodeEmitter &MCE,
+ CodeGenOpt::Level);
/// Target-Independent Code Generator Pass Configuration Options.
/// addInstSelector - This method should add any "last minute" LLVM->LLVM
/// passes, then install an instruction selector pass, which converts from
/// LLVM code to machine instructions.
- virtual bool addInstSelector(FunctionPassManager &PM, bool Fast) {
+ virtual bool addInstSelector(PassManagerBase &, CodeGenOpt::Level) {
return true;
}
-
+
+ /// addPreRegAllocPasses - This method may be implemented by targets that want
+ /// to run passes immediately before register allocation. This should return
+ /// true if -print-machineinstrs should print after these passes.
+ virtual bool addPreRegAlloc(PassManagerBase &, CodeGenOpt::Level) {
+ return false;
+ }
+
/// addPostRegAllocPasses - This method may be implemented by targets that
/// want to run passes after register allocation but before prolog-epilog
/// insertion. This should return true if -print-machineinstrs should print
/// after these passes.
- virtual bool addPostRegAlloc(FunctionPassManager &PM, bool Fast) {
+ virtual bool addPostRegAlloc(PassManagerBase &, CodeGenOpt::Level) {
return false;
}
/// addPreEmitPass - This pass may be implemented by targets that want to run
/// passes immediately before machine code is emitted. This should return
/// true if -print-machineinstrs should print out the code after the passes.
- virtual bool addPreEmitPass(FunctionPassManager &PM, bool Fast) {
+ virtual bool addPreEmitPass(PassManagerBase &, CodeGenOpt::Level) {
return false;
}
- /// addAssemblyEmitter - This pass should be overridden by the target to add
- /// the asmprinter, if asm emission is supported. If this is not supported,
- /// 'true' should be returned.
- virtual bool addAssemblyEmitter(FunctionPassManager &PM, bool Fast,
- std::ostream &Out) {
+ /// addCodeEmitter - This pass should be overridden by the target to add a
+ /// code emitter, if supported. If this is not supported, 'true' should be
+ /// returned.
+ virtual bool addCodeEmitter(PassManagerBase &, CodeGenOpt::Level,
+ MachineCodeEmitter &) {
return true;
}
-
+
/// addCodeEmitter - This pass should be overridden by the target to add a
/// code emitter, if supported. If this is not supported, 'true' should be
- /// returned. If DumpAsm is true, the generated assembly is printed to cerr.
- virtual bool addCodeEmitter(FunctionPassManager &PM, bool Fast, bool DumpAsm,
- MachineCodeEmitter &MCE) {
+ /// returned.
+ virtual bool addCodeEmitter(PassManagerBase &, CodeGenOpt::Level,
+ JITCodeEmitter &) {
+ return true;
+ }
+
+ /// addSimpleCodeEmitter - This pass should be overridden by the target to add
+ /// a code emitter (without setting flags), if supported. If this is not
+ /// supported, 'true' should be returned.
+ virtual bool addSimpleCodeEmitter(PassManagerBase &, CodeGenOpt::Level,
+ MachineCodeEmitter &) {
return true;
}
/// addSimpleCodeEmitter - This pass should be overridden by the target to add
/// a code emitter (without setting flags), if supported. If this is not
- /// supported, 'true' should be returned. If DumpAsm is true, the generated
- /// assembly is printed to cerr.
- virtual bool addSimpleCodeEmitter(FunctionPassManager &PM, bool Fast,
- bool DumpAsm, MachineCodeEmitter &MCE) {
+ /// supported, 'true' should be returned.
+ virtual bool addSimpleCodeEmitter(PassManagerBase &, CodeGenOpt::Level,
+ JITCodeEmitter &) {
+ return true;
+ }
+
+ /// addSimpleCodeEmitter - This pass should be overridden by the target to add
+ /// a code emitter (without setting flags), if supported. If this is not
+ /// supported, 'true' should be returned.
+ virtual bool addSimpleCodeEmitter(PassManagerBase &, CodeGenOpt::Level,
+ ObjectCodeEmitter &) {
return true;
}
/// getEnableTailMergeDefault - the default setting for -enable-tail-merge
/// on this target. User flag overrides.
virtual bool getEnableTailMergeDefault() const { return true; }
+
+ /// addAssemblyEmitter - Helper function which creates a target specific
+ /// assembly printer, if available.
+ ///
+ /// \return Returns 'false' on success.
+ bool addAssemblyEmitter(PassManagerBase &, CodeGenOpt::Level,
+ bool /* VerboseAsmDefault */,
+ formatted_raw_ostream &);
};
} // End llvm namespace
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