ARMTargetMachine.cpp revision ec46ea34dcc615558294e9e0dbd0dd0f2894f574
1//===-- ARMTargetMachine.cpp - Define TargetMachine for ARM ---------------===// 2// 3// The LLVM Compiler Infrastructure 4// 5// This file was developed by the "Instituto Nokia de Tecnologia" and 6// is distributed under the University of Illinois Open Source 7// License. See LICENSE.TXT for details. 8// 9//===----------------------------------------------------------------------===// 10// 11// 12//===----------------------------------------------------------------------===// 13 14#include "ARMTargetMachine.h" 15#include "ARMFrameInfo.h" 16#include "ARM.h" 17#include "llvm/Assembly/PrintModulePass.h" 18#include "llvm/Module.h" 19#include "llvm/PassManager.h" 20#include "llvm/CodeGen/MachineFunction.h" 21#include "llvm/CodeGen/Passes.h" 22#include "llvm/Target/TargetOptions.h" 23#include "llvm/Target/TargetMachineRegistry.h" 24#include "llvm/Transforms/Scalar.h" 25#include <iostream> 26using namespace llvm; 27 28namespace { 29 // Register the target. 30 RegisterTarget<ARMTargetMachine> X("arm", " ARM"); 31} 32 33/// TargetMachine ctor - Create an ILP32 architecture model 34/// 35ARMTargetMachine::ARMTargetMachine(const Module &M, const std::string &FS) 36 : TargetMachine("ARM"), DataLayout("E-p:32:32"), 37 FrameInfo() { 38} 39 40unsigned ARMTargetMachine::getModuleMatchQuality(const Module &M) { 41 std::string TT = M.getTargetTriple(); 42 if (TT.size() >= 4 && std::string(TT.begin(), TT.begin()+4) == "arm-") 43 return 20; 44 45 if (M.getPointerSize() == Module::Pointer32) 46 return 1; 47 else 48 return 0; 49} 50 51/// addPassesToEmitFile - Add passes to the specified pass manager 52/// to implement a static compiler for this target. 53/// 54bool ARMTargetMachine::addPassesToEmitFile(PassManager &PM, std::ostream &Out, 55 CodeGenFileType FileType, 56 bool Fast) { 57 if (FileType != TargetMachine::AssemblyFile) 58 return true; 59 60 // Run loop strength reduction before anything else. 61 if (!Fast) 62 PM.add(createLoopStrengthReducePass()); 63 64 // FIXME: Implement efficient support for garbage collection intrinsics. 65 PM.add(createLowerGCPass()); 66 67 // FIXME: implement the invoke/unwind instructions! 68 PM.add(createLowerInvokePass()); 69 70 // Print LLVM code input to instruction selector: 71 if (PrintMachineCode) 72 PM.add(new PrintFunctionPass()); 73 74 // Make sure that no unreachable blocks are instruction selected. 75 PM.add(createUnreachableBlockEliminationPass()); 76 77 PM.add(createARMISelDag(*this)); 78 79 // Print machine instructions as they were initially generated. 80 if (PrintMachineCode) 81 PM.add(createMachineFunctionPrinterPass(&std::cerr)); 82 83 PM.add(createRegisterAllocator()); 84 PM.add(createPrologEpilogCodeInserter()); 85 86 // Print machine instructions after register allocation and prolog/epilog 87 // insertion. 88 if (PrintMachineCode) 89 PM.add(createMachineFunctionPrinterPass(&std::cerr)); 90 91 // Output assembly language. 92 PM.add(createARMCodePrinterPass(Out, *this)); 93 94 // Delete the MachineInstrs we generated, since they're no longer needed. 95 PM.add(createMachineCodeDeleter()); 96 return false; 97} 98 99