#ifndef LLVM_TARGET_TARGETMACHINE_H
#define LLVM_TARGET_TARGETMACHINE_H
-#include "llvm/Target/TargetInstrItineraries.h"
#include <cassert>
+#include <string>
namespace llvm {
+class InstrItineraryData;
+class JITCodeEmitter;
+class MCAsmInfo;
+class MCContext;
+class Pass;
+class PassManager;
+class PassManagerBase;
class Target;
-class TargetAsmInfo;
class TargetData;
-class TargetSubtarget;
+class TargetELFWriterInfo;
+class TargetFrameLowering;
class TargetInstrInfo;
class TargetIntrinsicInfo;
class TargetJITInfo;
class TargetLowering;
-class TargetFrameInfo;
-class MachineCodeEmitter;
-class JITCodeEmitter;
-class ObjectCodeEmitter;
class TargetRegisterInfo;
-class Module;
-class PassManagerBase;
-class PassManager;
-class Pass;
-class TargetMachOWriterInfo;
-class TargetELFWriterInfo;
+class TargetSelectionDAGInfo;
+class TargetSubtarget;
class formatted_raw_ostream;
+class raw_ostream;
// Relocation model types.
namespace Reloc {
};
}
-namespace FileModel {
- enum Model {
- Error,
- None,
- AsmFile,
- MachOFile,
- ElfFile
- };
-}
-
// Code generation optimization level.
namespace CodeGenOpt {
enum Level {
- Default,
- None,
- Aggressive
+ None, // -O0
+ Less, // -O1
+ Default, // -O2, -Os
+ Aggressive // -O3
};
}
-
-// 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.
+namespace Sched {
+ enum Preference {
+ None, // No preference
+ Latency, // Scheduling for shortest total latency.
+ RegPressure, // Scheduling for lowest register pressure.
+ Hybrid, // Scheduling for both latency and register pressure.
+ ILP // Scheduling for ILP in low register pressure mode.
};
}
/// TheTarget - The Target that this machine was created for.
const Target &TheTarget;
-
+
/// AsmInfo - Contains target specific asm information.
///
- mutable const TargetAsmInfo *AsmInfo;
-
- /// createTargetAsmInfo - Create a new instance of target specific asm
- /// information.
- virtual const TargetAsmInfo *createTargetAsmInfo() const { return 0; }
+ const MCAsmInfo *AsmInfo;
+
+ unsigned MCRelaxAll : 1;
+ unsigned MCNoExecStack : 1;
+ unsigned MCSaveTempLabels : 1;
+ unsigned MCUseLoc : 1;
+ unsigned MCUseCFI : 1;
public:
virtual ~TargetMachine();
// -- Stack frame information
// -- Selection DAG lowering information
//
- virtual const TargetInstrInfo *getInstrInfo() const { return 0; }
- virtual const TargetFrameInfo *getFrameInfo() const { return 0; }
- virtual TargetLowering *getTargetLowering() const { return 0; }
- virtual const TargetData *getTargetData() const { return 0; }
-
- /// getTargetAsmInfo - Return target specific asm information.
+ virtual const TargetInstrInfo *getInstrInfo() const { return 0; }
+ virtual const TargetFrameLowering *getFrameLowering() const { return 0; }
+ virtual const TargetLowering *getTargetLowering() const { return 0; }
+ virtual const TargetSelectionDAGInfo *getSelectionDAGInfo() const{ return 0; }
+ virtual const TargetData *getTargetData() const { return 0; }
+
+ /// getMCAsmInfo - Return target specific asm information.
///
- const TargetAsmInfo *getTargetAsmInfo() const {
- if (!AsmInfo) AsmInfo = createTargetAsmInfo();
- return AsmInfo;
- }
-
+ const MCAsmInfo *getMCAsmInfo() const { return AsmInfo; }
+
/// getSubtarget - This method returns a pointer to the specified type of
/// TargetSubtarget. In debug builds, it verifies that the object being
/// returned is of the correct type.
template<typename STC> const STC &getSubtarget() const {
- const TargetSubtarget *TST = getSubtargetImpl();
- assert(TST && dynamic_cast<const STC*>(TST) &&
- "Not the right kind of subtarget!");
- return *static_cast<const STC*>(TST);
+ return *static_cast<const STC*>(getSubtargetImpl());
}
/// getRegisterInfo - If register information is available, return it. If
/// details of graph coloring register allocation removed from it.
///
virtual const TargetRegisterInfo *getRegisterInfo() const { return 0; }
-
+
/// getIntrinsicInfo - If intrinsic information is available, return it. If
/// not, return null.
///
/// otherwise return null.
///
virtual TargetJITInfo *getJITInfo() { return 0; }
-
+
/// getInstrItineraryData - Returns instruction itinerary data for the target
/// or specific subtarget.
///
- virtual const InstrItineraryData getInstrItineraryData() const {
- return InstrItineraryData();
+ virtual const InstrItineraryData *getInstrItineraryData() const {
+ return 0;
}
- /// getMachOWriterInfo - If this target supports a Mach-O writer, return
- /// information for it, otherwise return null.
- ///
- virtual const TargetMachOWriterInfo *getMachOWriterInfo() const { return 0; }
-
/// getELFWriterInfo - If this target supports an ELF writer, return
/// information for it, otherwise return null.
- ///
+ ///
virtual const TargetELFWriterInfo *getELFWriterInfo() const { return 0; }
+ /// hasMCRelaxAll - Check whether all machine code instructions should be
+ /// relaxed.
+ bool hasMCRelaxAll() const { return MCRelaxAll; }
+
+ /// setMCRelaxAll - Set whether all machine code instructions should be
+ /// relaxed.
+ void setMCRelaxAll(bool Value) { MCRelaxAll = Value; }
+
+ /// hasMCSaveTempLabels - Check whether temporary labels will be preserved
+ /// (i.e., not treated as temporary).
+ bool hasMCSaveTempLabels() const { return MCSaveTempLabels; }
+
+ /// setMCSaveTempLabels - Set whether temporary labels will be preserved
+ /// (i.e., not treated as temporary).
+ void setMCSaveTempLabels(bool Value) { MCSaveTempLabels = Value; }
+
+ /// hasMCNoExecStack - Check whether an executable stack is not needed.
+ bool hasMCNoExecStack() const { return MCNoExecStack; }
+
+ /// setMCNoExecStack - Set whether an executabel stack is not needed.
+ void setMCNoExecStack(bool Value) { MCNoExecStack = Value; }
+
+ /// hasMCUseLoc - Check whether we should use dwarf's .loc directive.
+ bool hasMCUseLoc() const { return MCUseLoc; }
+
+ /// setMCUseLoc - Set whether all we should use dwarf's .loc directive.
+ void setMCUseLoc(bool Value) { MCUseLoc = Value; }
+
+ /// hasMCUseCFI - Check whether we should use dwarf's .cfi_* directives.
+ bool hasMCUseCFI() const { return MCUseCFI; }
+
+ /// setMCUseCFI - Set whether all we should use dwarf's .cfi_* directives.
+ void setMCUseCFI(bool Value) { MCUseCFI = Value; }
+
/// getRelocationModel - Returns the code generation relocation model. The
/// choices are static, PIC, and dynamic-no-pic, and target default.
static Reloc::Model getRelocationModel();
/// is false.
static void setAsmVerbosityDefault(bool);
+ /// getDataSections - Return true if data objects should be emitted into their
+ /// own section, corresponds to -fdata-sections.
+ static bool getDataSections();
+
+ /// getFunctionSections - Return true if functions should be emitted into
+ /// their own section, corresponding to -ffunction-sections.
+ static bool getFunctionSections();
+
+ /// setDataSections - Set if the data are emit into separate sections.
+ static void setDataSections(bool);
+
+ /// setFunctionSections - Set if the functions are emit into separate
+ /// sections.
+ static void setFunctionSections(bool);
+
/// CodeGenFileType - These enums are meant to be passed into
- /// addPassesToEmitFile to indicate what type of file to emit.
+ /// addPassesToEmitFile to indicate what type of file to emit, and returned by
+ /// it to indicate what type of file could actually be made.
enum CodeGenFileType {
- AssemblyFile, ObjectFile, DynamicLibrary
+ CGFT_AssemblyFile,
+ CGFT_ObjectFile,
+ CGFT_Null // Do not emit any output.
};
/// getEnableTailMergeDefault - the default setting for -enable-tail-merge
/// 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.
- ///
- virtual FileModel::Model addPassesToEmitFile(PassManagerBase &,
- formatted_raw_ostream &,
- CodeGenFileType,
- CodeGenOpt::Level) {
- return FileModel::None;
- }
-
- /// 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 &,
- 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;
- }
-
- /// 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 &,
- MachineCodeEmitter &,
- CodeGenOpt::Level) {
+ /// generation. This method should return true if emission of this file type
+ /// is not supported, or false on success.
+ virtual bool addPassesToEmitFile(PassManagerBase &,
+ formatted_raw_ostream &,
+ CodeGenFileType,
+ CodeGenOpt::Level,
+ bool = true) {
return true;
}
/// addPassesToEmitMachineCode - Add passes to the specified pass manager to
- /// get machine code emitted. This uses a MachineCodeEmitter object to handle
+ /// get machine code emitted. This uses a JITCodeEmitter 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) {
+ CodeGenOpt::Level,
+ bool = true) {
return true;
}
- /// addPassesToEmitWholeFile - This method can be implemented by targets that
- /// 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 &, formatted_raw_ostream &,
- CodeGenFileType,
- CodeGenOpt::Level) {
+ /// addPassesToEmitMC - Add passes to the specified pass manager to get
+ /// machine code emitted with the MCJIT. This method returns true if machine
+ /// code is not supported. It fills the MCContext Ctx pointer which can be
+ /// used to build custom MCStreamer.
+ ///
+ virtual bool addPassesToEmitMC(PassManagerBase &,
+ MCContext *&,
+ raw_ostream &,
+ CodeGenOpt::Level,
+ bool = true) {
return true;
}
};
/// implemented with the LLVM target-independent code generator.
///
class LLVMTargetMachine : public TargetMachine {
+ std::string TargetTriple;
+
protected: // Can only create subclasses.
- LLVMTargetMachine(const Target &T) : TargetMachine(T) { }
+ LLVMTargetMachine(const Target &T, const std::string &TargetTriple);
+private:
/// addCommonCodeGenPasses - Add standard LLVM codegen passes used for
/// both emitting to assembly files or machine code output.
///
- bool addCommonCodeGenPasses(PassManagerBase &, CodeGenOpt::Level);
+ bool addCommonCodeGenPasses(PassManagerBase &, CodeGenOpt::Level,
+ bool DisableVerify, MCContext *&OutCtx);
+
+ virtual void setCodeModelForJIT();
+ virtual void setCodeModelForStatic();
public:
-
+
+ const std::string &getTargetTriple() const { return TargetTriple; }
+
/// addPassesToEmitFile - Add passes to the specified pass manager to get the
/// specified file emitted. Typically this will involve several steps of code
- /// 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(PassManagerBase &PM,
- formatted_raw_ostream &Out,
- CodeGenFileType FileType,
- 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,
- 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);
-
+ /// generation. If OptLevel is None, the code generator should emit code as
+ /// fast as possible, though the generated code may be less efficient.
+ virtual bool addPassesToEmitFile(PassManagerBase &PM,
+ formatted_raw_ostream &Out,
+ CodeGenFileType FileType,
+ CodeGenOpt::Level,
+ bool DisableVerify = true);
+
/// addPassesToEmitMachineCode - Add passes to the specified pass manager to
- /// get machine code emitted. This uses a MachineCodeEmitter object to handle
+ /// get machine code emitted. This uses a JITCodeEmitter 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,
JITCodeEmitter &MCE,
- CodeGenOpt::Level);
-
+ CodeGenOpt::Level,
+ bool DisableVerify = true);
+
+ /// addPassesToEmitMC - Add passes to the specified pass manager to get
+ /// machine code emitted with the MCJIT. This method returns true if machine
+ /// code is not supported. It fills the MCContext Ctx pointer which can be
+ /// used to build custom MCStreamer.
+ ///
+ virtual bool addPassesToEmitMC(PassManagerBase &PM,
+ MCContext *&Ctx,
+ raw_ostream &OS,
+ CodeGenOpt::Level OptLevel,
+ bool DisableVerify = true);
+
/// 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.
+
+ /// addPreISelPasses - This method should add any "last minute" LLVM->LLVM
+ /// passes (which are run just before instruction selector).
+ virtual bool addPreISel(PassManagerBase &, CodeGenOpt::Level) {
+ return true;
+ }
+
+ /// addInstSelector - This method should install an instruction selector pass,
+ /// which converts from LLVM code to machine instructions.
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
+ /// addPreRegAlloc - 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
+ /// addPostRegAlloc - 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(PassManagerBase &, CodeGenOpt::Level) {
return false;
}
-
+
+ /// addPreSched2 - This method may be implemented by targets that want to
+ /// run passes after prolog-epilog insertion and before the second instruction
+ /// scheduling pass. This should return true if -print-machineinstrs should
+ /// print after these passes.
+ virtual bool addPreSched2(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(PassManagerBase &, CodeGenOpt::Level) {
return false;
}
-
-
- /// 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
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.
- 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
projects / oota-llvm.git / blobdiff