#define LLVM_TARGET_TARGETMACHINE_H
#include "llvm/ADT/StringRef.h"
+#include "llvm/ADT/Triple.h"
+#include "llvm/IR/DataLayout.h"
#include "llvm/Pass.h"
#include "llvm/Support/CodeGen.h"
#include "llvm/Target/TargetOptions.h"
class InstrItineraryData;
class GlobalValue;
class Mangler;
+class MachineFunctionInitializer;
class MCAsmInfo;
class MCCodeGenInfo;
class MCContext;
+class MCInstrInfo;
+class MCRegisterInfo;
+class MCSubtargetInfo;
class MCSymbol;
class Target;
class DataLayout;
class TargetLibraryInfo;
class TargetFrameLowering;
+class TargetIRAnalysis;
class TargetIntrinsicInfo;
class TargetLowering;
class TargetPassConfig;
class TargetRegisterInfo;
class TargetSelectionDAGInfo;
class TargetSubtargetInfo;
-class ScalarTargetTransformInfo;
-class VectorTargetTransformInfo;
+class TargetTransformInfo;
class formatted_raw_ostream;
class raw_ostream;
+class raw_pwrite_stream;
+class TargetLoweringObjectFile;
// The old pass manager infrastructure is hidden in a legacy namespace now.
namespace legacy {
//===----------------------------------------------------------------------===//
///
-/// TargetMachine - Primary interface to the complete machine description for
-/// the target machine. All target-specific information should be accessible
-/// through this interface.
+/// Primary interface to the complete machine description for the target
+/// machine. All target-specific information should be accessible through this
+/// interface.
///
class TargetMachine {
- TargetMachine(const TargetMachine &) LLVM_DELETED_FUNCTION;
- void operator=(const TargetMachine &) LLVM_DELETED_FUNCTION;
+ TargetMachine(const TargetMachine &) = delete;
+ void operator=(const TargetMachine &) = delete;
protected: // Can only create subclasses.
- TargetMachine(const Target &T, StringRef TargetTriple,
- StringRef CPU, StringRef FS, const TargetOptions &Options);
+ TargetMachine(const Target &T, StringRef DataLayoutString,
+ const Triple &TargetTriple, StringRef CPU, StringRef FS,
+ const TargetOptions &Options);
- /// TheTarget - The Target that this machine was created for.
+ /// The Target that this machine was created for.
const Target &TheTarget;
- /// TargetTriple, TargetCPU, TargetFS - Triple string, CPU name, and target
- /// feature strings the TargetMachine instance is created with.
- std::string TargetTriple;
+ /// DataLayout for the target: keep ABI type size and alignment.
+ ///
+ /// The DataLayout is created based on the string representation provided
+ /// during construction. It is kept here only to avoid reparsing the string
+ /// but should not really be used during compilation, because it has an
+ /// internal cache that is context specific.
+ const DataLayout DL;
+
+ /// Triple string, CPU name, and target feature strings the TargetMachine
+ /// instance is created with.
+ Triple TargetTriple;
std::string TargetCPU;
std::string TargetFS;
- /// CodeGenInfo - Low level target information such as relocation model.
- /// Non-const to allow resetting optimization level per-function.
+ /// Low level target information such as relocation model. Non-const to
+ /// allow resetting optimization level per-function.
MCCodeGenInfo *CodeGenInfo;
- /// AsmInfo - Contains target specific asm information.
- ///
+ /// Contains target specific asm information.
const MCAsmInfo *AsmInfo;
+ const MCRegisterInfo *MRI;
+ const MCInstrInfo *MII;
+ const MCSubtargetInfo *STI;
+
unsigned RequireStructuredCFG : 1;
public:
const Target &getTarget() const { return TheTarget; }
- StringRef getTargetTriple() const { return TargetTriple; }
+ const Triple &getTargetTriple() const { return TargetTriple; }
StringRef getTargetCPU() const { return TargetCPU; }
StringRef getTargetFeatureString() const { return TargetFS; }
- /// getSubtargetImpl - virtual method implemented by subclasses that returns
- /// a reference to that target's TargetSubtargetInfo-derived member variable.
- virtual const TargetSubtargetInfo *getSubtargetImpl() const {
+ /// Virtual method implemented by subclasses that returns a reference to that
+ /// target's TargetSubtargetInfo-derived member variable.
+ virtual const TargetSubtargetInfo *getSubtargetImpl(const Function &) const {
return nullptr;
}
- virtual const TargetSubtargetInfo *getSubtargetImpl(const Function *) const {
- return getSubtargetImpl();
+ virtual TargetLoweringObjectFile *getObjFileLowering() const {
+ return nullptr;
}
- /// getSubtarget - This method returns a pointer to the specified type of
+ /// This method returns a pointer to the specified type of
/// TargetSubtargetInfo. In debug builds, it verifies that the object being
/// returned is of the correct type.
- template<typename STC> const STC &getSubtarget() const {
- return *static_cast<const STC*>(getSubtargetImpl());
+ template <typename STC> const STC &getSubtarget(const Function &F) const {
+ return *static_cast<const STC*>(getSubtargetImpl(F));
}
- template <typename STC> const STC &getSubtarget(const Function *) const {
- return *static_cast<const STC*>(getSubtargetImpl());
+
+ /// Create a DataLayout.
+ const DataLayout createDataLayout() const { return DL; }
+
+ /// Test if a DataLayout if compatible with the CodeGen for this target.
+ ///
+ /// The LLVM Module owns a DataLayout that is used for the target independent
+ /// optimizations and code generation. This hook provides a target specific
+ /// check on the validity of this DataLayout.
+ bool isCompatibleDataLayout(const DataLayout &Candidate) const {
+ return DL == Candidate;
}
+ /// Get the pointer size for this target.
+ ///
+ /// This is the only time the DataLayout in the TargetMachine is used.
+ unsigned getPointerSize() const { return DL.getPointerSize(); }
+
/// \brief Reset the target options based on the function's attributes.
- void resetTargetOptions(const MachineFunction *MF) const;
+ // FIXME: Remove TargetOptions that affect per-function code generation
+ // from TargetMachine.
+ void resetTargetOptions(const Function &F) const;
- /// getMCAsmInfo - Return target specific asm information.
- ///
+ /// Return target specific asm information.
const MCAsmInfo *getMCAsmInfo() const { return AsmInfo; }
- /// getIntrinsicInfo - If intrinsic information is available, return it. If
- /// not, return null.
- ///
+ const MCRegisterInfo *getMCRegisterInfo() const { return MRI; }
+ const MCInstrInfo *getMCInstrInfo() const { return MII; }
+ const MCSubtargetInfo *getMCSubtargetInfo() const { return STI; }
+
+ /// If intrinsic information is available, return it. If not, return null.
virtual const TargetIntrinsicInfo *getIntrinsicInfo() const {
return nullptr;
}
bool requiresStructuredCFG() const { return RequireStructuredCFG; }
void setRequiresStructuredCFG(bool Value) { RequireStructuredCFG = Value; }
- /// getRelocationModel - Returns the code generation relocation model. The
- /// choices are static, PIC, and dynamic-no-pic, and target default.
+ /// Returns the code generation relocation model. The choices are static, PIC,
+ /// and dynamic-no-pic, and target default.
Reloc::Model getRelocationModel() const;
- /// getCodeModel - Returns the code model. The choices are small, kernel,
- /// medium, large, and target default.
+ /// Returns the code model. The choices are small, kernel, medium, large, and
+ /// target default.
CodeModel::Model getCodeModel() const;
- /// getTLSModel - Returns the TLS model which should be used for the given
- /// global variable.
+ /// Returns the TLS model which should be used for the given global variable.
TLSModel::Model getTLSModel(const GlobalValue *GV) const;
- /// getOptLevel - Returns the optimization level: None, Less,
- /// Default, or Aggressive.
+ /// Returns the optimization level: None, Less, Default, or Aggressive.
CodeGenOpt::Level getOptLevel() const;
/// \brief Overrides the optimization level.
bool shouldPrintMachineCode() const { return Options.PrintMachineCode; }
- /// getAsmVerbosityDefault - Returns the default value of asm verbosity.
+ /// Returns the default value of asm verbosity.
///
- bool getAsmVerbosityDefault() const ;
-
- /// setAsmVerbosityDefault - Set the default value of asm verbosity. Default
- /// is false.
- void setAsmVerbosityDefault(bool);
-
- /// getDataSections - Return true if data objects should be emitted into their
- /// own section, corresponds to -fdata-sections.
- bool getDataSections() const;
-
- /// getFunctionSections - Return true if functions should be emitted into
- /// their own section, corresponding to -ffunction-sections.
- bool getFunctionSections() const;
+ bool getAsmVerbosityDefault() const {
+ return Options.MCOptions.AsmVerbose;
+ }
- /// setDataSections - Set if the data are emit into separate sections.
- void setDataSections(bool);
+ bool getUniqueSectionNames() const { return Options.UniqueSectionNames; }
- /// setFunctionSections - Set if the functions are emit into separate
- /// sections.
- void setFunctionSections(bool);
+ /// Return true if data objects should be emitted into their own section,
+ /// corresponds to -fdata-sections.
+ bool getDataSections() const {
+ return Options.DataSections;
+ }
- /// \brief Register analysis passes for this target with a pass manager.
- virtual void addAnalysisPasses(PassManagerBase &) {}
+ /// Return true if functions should be emitted into their own section,
+ /// corresponding to -ffunction-sections.
+ bool getFunctionSections() const {
+ return Options.FunctionSections;
+ }
- /// CodeGenFileType - These enums are meant to be passed into
- /// addPassesToEmitFile to indicate what type of file to emit, and returned by
- /// it to indicate what type of file could actually be made.
+ /// \brief Get a \c TargetIRAnalysis appropriate for the target.
+ ///
+ /// This is used to construct the new pass manager's target IR analysis pass,
+ /// set up appropriately for this target machine. Even the old pass manager
+ /// uses this to answer queries about the IR.
+ virtual TargetIRAnalysis getTargetIRAnalysis();
+
+ /// These enums are meant to be passed into 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 {
CGFT_AssemblyFile,
CGFT_ObjectFile,
CGFT_Null // Do not emit any output.
};
- /// addPassesToEmitFile - Add passes to the specified pass manager to get the
- /// specified file emitted. Typically this will involve several steps of code
- /// 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,
- bool /*DisableVerify*/ = true,
- AnalysisID /*StartAfter*/ = nullptr,
- AnalysisID /*StopAfter*/ = nullptr) {
+ /// Add passes to the specified pass manager to get the specified file
+ /// emitted. Typically this will involve several steps of code generation.
+ /// This method should return true if emission of this file type is not
+ /// supported, or false on success.
+ virtual bool addPassesToEmitFile(
+ PassManagerBase &, raw_pwrite_stream &, CodeGenFileType,
+ bool /*DisableVerify*/ = true, AnalysisID /*StartBefore*/ = nullptr,
+ AnalysisID /*StartAfter*/ = nullptr, AnalysisID /*StopAfter*/ = nullptr,
+ MachineFunctionInitializer * /*MFInitializer*/ = nullptr) {
return 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.
+ /// 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 &,
+ virtual bool addPassesToEmitMC(PassManagerBase &, MCContext *&,
+ raw_pwrite_stream &,
bool /*DisableVerify*/ = true) {
return true;
}
MCSymbol *getSymbol(const GlobalValue *GV, Mangler &Mang) const;
};
-/// LLVMTargetMachine - This class describes a target machine that is
-/// implemented with the LLVM target-independent code generator.
+/// This class describes a target machine that is implemented with the LLVM
+/// target-independent code generator.
///
class LLVMTargetMachine : public TargetMachine {
protected: // Can only create subclasses.
- LLVMTargetMachine(const Target &T, StringRef TargetTriple,
- StringRef CPU, StringRef FS, TargetOptions Options,
- Reloc::Model RM, CodeModel::Model CM,
+ LLVMTargetMachine(const Target &T, StringRef DataLayoutString,
+ const Triple &TargetTriple, StringRef CPU, StringRef FS,
+ TargetOptions Options, Reloc::Model RM, CodeModel::Model CM,
CodeGenOpt::Level OL);
void initAsmInfo();
public:
- /// \brief Register analysis passes for this target with a pass manager.
+ /// \brief Get a TargetIRAnalysis implementation for the target.
///
- /// This registers target independent analysis passes.
- void addAnalysisPasses(PassManagerBase &PM) override;
+ /// This analysis will produce a TTI result which uses the common code
+ /// generator to answer queries about the IR.
+ TargetIRAnalysis getTargetIRAnalysis() override;
- /// createPassConfig - Create a pass configuration object to be used by
- /// addPassToEmitX methods for generating a pipeline of CodeGen passes.
+ /// Create a pass configuration object to be used by addPassToEmitX methods
+ /// for generating a pipeline of CodeGen passes.
virtual TargetPassConfig *createPassConfig(PassManagerBase &PM);
- /// addPassesToEmitFile - Add passes to the specified pass manager to get the
- /// specified file emitted. Typically this will involve several steps of code
- /// generation.
- bool addPassesToEmitFile(PassManagerBase &PM, formatted_raw_ostream &Out,
- CodeGenFileType FileType, bool DisableVerify = true,
- AnalysisID StartAfter = nullptr,
- AnalysisID StopAfter = nullptr) override;
-
- /// 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.
- ///
+ /// Add passes to the specified pass manager to get the specified file
+ /// emitted. Typically this will involve several steps of code generation.
+ bool addPassesToEmitFile(
+ PassManagerBase &PM, raw_pwrite_stream &Out, CodeGenFileType FileType,
+ bool DisableVerify = true, AnalysisID StartBefore = nullptr,
+ AnalysisID StartAfter = nullptr, AnalysisID StopAfter = nullptr,
+ MachineFunctionInitializer *MFInitializer = nullptr) override;
+
+ /// 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.
bool addPassesToEmitMC(PassManagerBase &PM, MCContext *&Ctx,
- raw_ostream &OS, bool DisableVerify = true) override;
+ raw_pwrite_stream &OS,
+ bool DisableVerify = true) override;
};
} // End llvm namespace
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