1 //===-- MipsTargetMachine.cpp - Define TargetMachine for Mips -------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // 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"
22 // Register the target.
23 static RegisterTarget<MipsTargetMachine> X("mips", " Mips");
24 static RegisterTarget<MipselTargetMachine> Y("mipsel", " Mipsel");
26 const TargetAsmInfo *MipsTargetMachine::
27 createTargetAsmInfo() const
29 return new MipsTargetAsmInfo(*this);
32 // DataLayout --> Big-endian, 32-bit pointer/ABI/alignment
33 // The stack is always 8 byte aligned
34 // On function prologue, the stack is created by decrementing
35 // its pointer. Once decremented, all references are done with positive
36 // offset from the stack/frame pointer, so StackGrowsUp is used.
37 // When using CodeModel::Large the behaviour
40 MipsTargetMachine(const Module &M, const std::string &FS, bool isLittle=false):
41 Subtarget(*this, M, FS, isLittle),
42 DataLayout(isLittle ? std::string("e-p:32:32:32") :
43 std::string("E-p:32:32:32")),
45 FrameInfo(TargetFrameInfo::StackGrowsUp, 8, 0),
48 if (getRelocationModel() != Reloc::Static)
49 setRelocationModel(Reloc::PIC_);
50 if (getCodeModel() == CodeModel::Default)
51 setCodeModel(CodeModel::Small);
55 MipselTargetMachine(const Module &M, const std::string &FS) :
56 MipsTargetMachine(M, FS, true) {}
58 // return 0 and must specify -march to gen MIPS code.
59 unsigned MipsTargetMachine::
60 getModuleMatchQuality(const Module &M)
62 // We strongly match "mips-*".
63 std::string TT = M.getTargetTriple();
64 if (TT.size() >= 5 && std::string(TT.begin(), TT.begin()+5) == "mips-")
70 // return 0 and must specify -march to gen MIPSel code.
71 unsigned MipselTargetMachine::
72 getModuleMatchQuality(const Module &M)
74 // We strongly match "mipsel-*".
75 std::string TT = M.getTargetTriple();
76 if (TT.size() >= 7 && std::string(TT.begin(), TT.begin()+7) == "mipsel-")
82 // Install an instruction selector pass using
83 // the ISelDag to gen Mips code.
84 bool MipsTargetMachine::
85 addInstSelector(PassManagerBase &PM, bool Fast)
87 PM.add(createMipsISelDag(*this));
91 // Implemented by targets that want to run passes immediately before
92 // machine code is emitted. return true if -print-machineinstrs should
93 // print out the code after the passes.
94 bool MipsTargetMachine::
95 addPreEmitPass(PassManagerBase &PM, bool Fast)
97 PM.add(createMipsDelaySlotFillerPass(*this));
101 // Implements the AssemblyEmitter for the target. Must return
102 // true if AssemblyEmitter is supported
103 bool MipsTargetMachine::
104 addAssemblyEmitter(PassManagerBase &PM, bool Fast,
107 // Output assembly language.
108 PM.add(createMipsCodePrinterPass(Out, *this));