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, using StackGrowsUp enables
37 // an easier handling.
38 // Using CodeModel::Large enables different CALL behavior.
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-i8:8:32-i16:16:32") :
43 std::string("E-p:32:32:32-i8:8:32-i16:16:32")),
45 FrameInfo(TargetFrameInfo::StackGrowsUp, 8, 0),
48 // Abicall enables PIC by default
49 if (Subtarget.hasABICall())
50 setRelocationModel(Reloc::PIC_);
52 // TODO: create an option to enable long calls, like -mlong-calls,
53 // that would be our CodeModel::Large. It must not work with Abicall.
54 if (getCodeModel() == CodeModel::Default)
55 setCodeModel(CodeModel::Small);
59 MipselTargetMachine(const Module &M, const std::string &FS) :
60 MipsTargetMachine(M, FS, true) {}
62 // return 0 and must specify -march to gen MIPS code.
63 unsigned MipsTargetMachine::
64 getModuleMatchQuality(const Module &M)
66 // We strongly match "mips*-*".
67 std::string TT = M.getTargetTriple();
68 if (TT.size() >= 5 && std::string(TT.begin(), TT.begin()+5) == "mips-")
71 if (TT.size() >= 13 && std::string(TT.begin(),
72 TT.begin()+13) == "mipsallegrex-")
78 // return 0 and must specify -march to gen MIPSEL code.
79 unsigned MipselTargetMachine::
80 getModuleMatchQuality(const Module &M)
82 // We strongly match "mips*el-*".
83 std::string TT = M.getTargetTriple();
84 if (TT.size() >= 7 && std::string(TT.begin(), TT.begin()+7) == "mipsel-")
87 if (TT.size() >= 15 && std::string(TT.begin(),
88 TT.begin()+15) == "mipsallegrexel-")
91 if (TT.size() == 3 && std::string(TT.begin(), TT.begin()+3) == "psp")
97 // Install an instruction selector pass using
98 // the ISelDag to gen Mips code.
99 bool MipsTargetMachine::
100 addInstSelector(PassManagerBase &PM, bool Fast)
102 PM.add(createMipsISelDag(*this));
106 // Implemented by targets that want to run passes immediately before
107 // machine code is emitted. return true if -print-machineinstrs should
108 // print out the code after the passes.
109 bool MipsTargetMachine::
110 addPreEmitPass(PassManagerBase &PM, bool Fast)
112 PM.add(createMipsDelaySlotFillerPass(*this));
116 // Implements the AssemblyEmitter for the target. Must return
117 // true if AssemblyEmitter is supported
118 bool MipsTargetMachine::
119 addAssemblyEmitter(PassManagerBase &PM, bool Fast,
122 // Output assembly language.
123 PM.add(createMipsCodePrinterPass(Out, *this));