//===-- MBlazeTargetMachine.cpp - Define TargetMachine for MBlaze ---------===// // // The LLVM Compiler Infrastructure // // This file is distributed under the University of Illinois Open Source // License. See LICENSE.TXT for details. // //===----------------------------------------------------------------------===// // // Implements the info about MBlaze target spec. // //===----------------------------------------------------------------------===// #include "MBlaze.h" #include "MBlazeTargetMachine.h" #include "llvm/PassManager.h" #include "llvm/CodeGen/Passes.h" #include "llvm/Support/FormattedStream.h" #include "llvm/Support/TargetRegistry.h" #include "llvm/Target/TargetOptions.h" using namespace llvm; extern "C" void LLVMInitializeMBlazeTarget() { // Register the target. RegisterTargetMachine<MBlazeTargetMachine> X(TheMBlazeTarget); } // DataLayout --> Big-endian, 32-bit pointer/ABI/alignment // The stack is always 8 byte aligned // On function prologue, the stack is created by decrementing // its pointer. Once decremented, all references are done with positive // offset from the stack/frame pointer, using StackGrowsUp enables // an easier handling. MBlazeTargetMachine:: MBlazeTargetMachine(const Target &T, StringRef TT, StringRef CPU, StringRef FS, Reloc::Model RM, CodeModel::Model CM): LLVMTargetMachine(T, TT, CPU, FS, RM, CM), Subtarget(TT, CPU, FS), DataLayout("E-p:32:32:32-i8:8:8-i16:16:16"), InstrInfo(*this), FrameLowering(Subtarget), TLInfo(*this), TSInfo(*this), ELFWriterInfo(*this), InstrItins(Subtarget.getInstrItineraryData()) { } // Install an instruction selector pass using // the ISelDag to gen MBlaze code. bool MBlazeTargetMachine::addInstSelector(PassManagerBase &PM, CodeGenOpt::Level OptLevel) { PM.add(createMBlazeISelDag(*this)); return false; } // Implemented by targets that want to run passes immediately before // machine code is emitted. return true if -print-machineinstrs should // print out the code after the passes. bool MBlazeTargetMachine::addPreEmitPass(PassManagerBase &PM, CodeGenOpt::Level OptLevel) { PM.add(createMBlazeDelaySlotFillerPass(*this)); return true; }