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 // Using CodeModel::Large enables different CALL behavior.
39 MipsTargetMachine(const Module &M, const std::string &FS, bool isLittle=false):
40 Subtarget(*this, M, FS, isLittle),
41 DataLayout(isLittle ? std::string("e-p:32:32:32") :
42 std::string("E-p:32:32:32")),
44 FrameInfo(TargetFrameInfo::StackGrowsUp, 8, 0),
47 // Abicall enables PIC by default
48 if (Subtarget.hasABICall() && (getRelocationModel() != Reloc::Static))
49 setRelocationModel(Reloc::PIC_);
51 // TODO: create an option to enable long calls, like -mlong-calls,
52 // that would be our CodeModel::Large. It must not work with Abicall.
53 if (getCodeModel() == CodeModel::Default)
54 setCodeModel(CodeModel::Small);
58 MipselTargetMachine(const Module &M, const std::string &FS) :
59 MipsTargetMachine(M, FS, true) {}
61 // return 0 and must specify -march to gen MIPS code.
62 unsigned MipsTargetMachine::
63 getModuleMatchQuality(const Module &M)
65 // We strongly match "mips*-*".
66 std::string TT = M.getTargetTriple();
67 if (TT.size() >= 5 && std::string(TT.begin(), TT.begin()+5) == "mips-")
70 if (TT.size() >= 13 && std::string(TT.begin(),
71 TT.begin()+13) == "mipsallegrex-")
77 // return 0 and must specify -march to gen MIPSEL code.
78 unsigned MipselTargetMachine::
79 getModuleMatchQuality(const Module &M)
81 // We strongly match "mips*el-*".
82 std::string TT = M.getTargetTriple();
83 if (TT.size() >= 7 && std::string(TT.begin(), TT.begin()+7) == "mipsel-")
86 if (TT.size() >= 15 && std::string(TT.begin(),
87 TT.begin()+15) == "mipsallegrexel-")
90 if (TT.size() == 3 && std::string(TT.begin(), TT.begin()+3) == "psp")
96 // Install an instruction selector pass using
97 // the ISelDag to gen Mips code.
98 bool MipsTargetMachine::
99 addInstSelector(PassManagerBase &PM, bool Fast)
101 PM.add(createMipsISelDag(*this));
105 // Implemented by targets that want to run passes immediately before
106 // machine code is emitted. return true if -print-machineinstrs should
107 // print out the code after the passes.
108 bool MipsTargetMachine::
109 addPreEmitPass(PassManagerBase &PM, bool Fast)
111 PM.add(createMipsDelaySlotFillerPass(*this));
115 // Implements the AssemblyEmitter for the target. Must return
116 // true if AssemblyEmitter is supported
117 bool MipsTargetMachine::
118 addAssemblyEmitter(PassManagerBase &PM, bool Fast,
121 // Output assembly language.
122 PM.add(createMipsCodePrinterPass(Out, *this));