1 //===-- MipsTargetMachine.cpp - Define TargetMachine for Mips -------------===//
3 // The LLVM Compiler Infrastructure
5 // This file was developed by Bruno Cardoso Lopes and is distributed under the
6 // University of Illinois Open Source License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // Implements the info about Mips target spec.
12 //===----------------------------------------------------------------------===//
15 #include "MipsTargetAsmInfo.h"
16 #include "MipsTargetMachine.h"
17 #include "llvm/Module.h"
18 #include "llvm/PassManager.h"
19 #include "llvm/Target/TargetMachineRegistry.h"
23 // Register the target.
24 RegisterTarget<MipsTargetMachine> X("mips", " Mips");
27 const TargetAsmInfo *MipsTargetMachine::
28 createTargetAsmInfo() const
30 return new MipsTargetAsmInfo(*this);
33 // DataLayout --> Big-endian, 32-bit pointer/ABI/alignment
34 // The stack is always 8 byte aligned
35 // On function prologue, the stack is created by decrementing
36 // its pointer. Once decremented, all references are done with positive
37 // offset from the stack/frame pointer, so StackGrowsUp is used.
39 MipsTargetMachine(const Module &M, const std::string &FS):
40 Subtarget(*this, M, FS), DataLayout("E-p:32:32:32"),
41 InstrInfo(*this), FrameInfo(TargetFrameInfo::StackGrowsUp, 8, 0),
44 if (getRelocationModel() != Reloc::Static)
45 setRelocationModel(Reloc::PIC_);
48 // return 0 and must specify -march to gen MIPS code.
49 unsigned MipsTargetMachine::
50 getModuleMatchQuality(const Module &M)
52 // We strongly match "mips-*".
53 std::string TT = M.getTargetTriple();
54 if (TT.size() >= 5 && std::string(TT.begin(), TT.begin()+5) == "mips-")
60 // Install an instruction selector pass using
61 // the ISelDag to gen Mips code.
62 bool MipsTargetMachine::
63 addInstSelector(FunctionPassManager &PM, bool Fast)
65 PM.add(createMipsISelDag(*this));
69 // Implemented by targets that want to run passes immediately before
70 // machine code is emitted. return true if -print-machineinstrs should
71 // print out the code after the passes.
72 bool MipsTargetMachine::
73 addPreEmitPass(FunctionPassManager &PM, bool Fast)
75 PM.add(createMipsDelaySlotFillerPass(*this));
79 // Implements the AssemblyEmitter for the target. Must return
80 // true if AssemblyEmitter is supported
81 bool MipsTargetMachine::
82 addAssemblyEmitter(FunctionPassManager &PM, bool Fast,
85 // Output assembly language.
86 PM.add(createMipsCodePrinterPass(Out, *this));