namespace llvm {
+class Target;
class TargetAsmInfo;
class TargetData;
class TargetSubtarget;
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 raw_ostream;
+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(0) { }
+ 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.
///
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
/// is not supported.
///
virtual FileModel::Model addPassesToEmitFile(PassManagerBase &,
- raw_ostream &,
+ formatted_raw_ostream &,
CodeGenFileType,
- unsigned /* OptLevel */) {
+ CodeGenOpt::Level) {
return FileModel::None;
}
///
virtual bool addPassesToEmitFileFinish(PassManagerBase &,
MachineCodeEmitter *,
- unsigned /* OptLevel */) {
+ 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;
}
///
virtual bool addPassesToEmitMachineCode(PassManagerBase &,
MachineCodeEmitter &,
- unsigned /* OptLevel */) {
+ 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 &, raw_ostream &,
+ virtual bool addPassesToEmitWholeFile(PassManager &, formatted_raw_ostream &,
CodeGenFileType,
- unsigned /* OptLevel */) {
+ 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 &, unsigned /* OptLevel */);
+ 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 OptLevel is 0, the code generator should emit code as fast
+ /// 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.
/// target-specific passes in standard locations.
///
virtual FileModel::Model addPassesToEmitFile(PassManagerBase &PM,
- raw_ostream &Out,
+ formatted_raw_ostream &Out,
CodeGenFileType FileType,
- unsigned OptLevel);
+ 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
///
virtual bool addPassesToEmitFileFinish(PassManagerBase &PM,
MachineCodeEmitter *MCE,
- unsigned OptLevel);
+ 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
///
virtual bool addPassesToEmitMachineCode(PassManagerBase &PM,
MachineCodeEmitter &MCE,
- unsigned OptLevel);
+ 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,
+ 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(PassManagerBase &, unsigned /* OptLevel */) {
+ 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 &, unsigned /* OptLevel */) {
+ virtual bool addPreRegAlloc(PassManagerBase &, CodeGenOpt::Level) {
return false;
}
/// 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 &, unsigned /* OptLevel */) {
+ 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(PassManagerBase &, unsigned /* OptLevel */) {
+ 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(PassManagerBase &, unsigned /* OptLevel */,
- bool /* VerboseAsmDefault */, raw_ostream &) {
+ /// 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(PassManagerBase &, unsigned /* OptLevel */,
- bool /*DumpAsm*/, MachineCodeEmitter &) {
+ /// 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(PassManagerBase &, unsigned /* OptLevel */,
- bool /*DumpAsm*/, MachineCodeEmitter &) {
+ /// 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