#include "llvm/Target/TargetInstrItineraries.h"
#include <cassert>
+#include <string>
namespace llvm {
-class TargetAsmInfo;
+class Target;
+class MCAsmInfo;
class TargetData;
class TargetSubtarget;
class TargetInstrInfo;
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 formatted_raw_ostream;
};
}
-namespace FileModel {
- enum Model {
- Error,
- None,
- AsmFile,
- MachOFile,
- ElfFile
- };
-}
-
// 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.
+ None, // -O0
+ Less, // -O1
+ Default, // -O2, -Os
+ Aggressive // -O3
};
}
TargetMachine(const TargetMachine &); // DO NOT IMPLEMENT
void operator=(const TargetMachine &); // DO NOT IMPLEMENT
protected: // Can only create subclasses.
- TargetMachine();
+ 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.
///
- mutable const TargetAsmInfo *AsmInfo;
+ const MCAsmInfo *AsmInfo;
- /// createTargetAsmInfo - Create a new instance of target specific asm
- /// information.
- 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 &) { 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.
+ /// 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
return InstrItineraryData();
}
- /// 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.
///
static void setAsmVerbosityDefault(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 DisableVerify = 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 DisableVerify = true) {
return true;
}
virtual bool WantsWholeFile() const { return false; }
virtual bool addPassesToEmitWholeFile(PassManager &, formatted_raw_ostream &,
CodeGenFileType,
- CodeGenOpt::Level) {
+ CodeGenOpt::Level,
+ bool DisableVerify = true) {
return true;
}
};
///
class LLVMTargetMachine : public TargetMachine {
protected: // Can only create subclasses.
- LLVMTargetMachine() { }
-
+ LLVMTargetMachine(const Target &T, const std::string &TargetTriple);
+
/// 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);
+private:
+ virtual void setCodeModelForJIT();
+ virtual void setCodeModelForStatic();
+
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 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);
/// Target-Independent Code Generator Pass Configuration Options.
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
}
- /// 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(PassManagerBase &, CodeGenOpt::Level,
- bool /* VerboseAsmDefault */,
- formatted_raw_ostream &) {
- 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.
+ /// returned.
virtual bool addCodeEmitter(PassManagerBase &, CodeGenOpt::Level,
- bool /*DumpAsm*/, 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(PassManagerBase &, CodeGenOpt::Level,
- bool /*DumpAsm*/, 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. If DumpAsm is true, the generated
- /// assembly is printed to cerr.
- virtual bool addSimpleCodeEmitter(PassManagerBase &, CodeGenOpt::Level,
- bool /*DumpAsm*/, 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(PassManagerBase &, CodeGenOpt::Level,
- bool /*DumpAsm*/, 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. If DumpAsm is true, the generated
- /// assembly is printed to cerr.
- virtual bool addSimpleCodeEmitter(PassManagerBase &, CodeGenOpt::Level,
- bool /*DumpAsm*/, ObjectCodeEmitter &) {
+ JITCodeEmitter &) {
return true;
}
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