1 //===-- MBlazeTargetMachine.cpp - Define TargetMachine for MBlaze ---------===//
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 MBlaze target spec.
12 //===----------------------------------------------------------------------===//
15 #include "MBlazeMCAsmInfo.h"
16 #include "MBlazeTargetMachine.h"
17 #include "llvm/PassManager.h"
18 #include "llvm/CodeGen/Passes.h"
19 #include "llvm/Support/FormattedStream.h"
20 #include "llvm/Target/TargetOptions.h"
21 #include "llvm/Target/TargetRegistry.h"
24 static MCStreamer *createMCStreamer(const Target &T, const std::string &TT,
25 MCContext &Ctx, TargetAsmBackend &TAB,
27 MCCodeEmitter *_Emitter,
30 switch (TheTriple.getOS()) {
32 llvm_unreachable("MBlaze does not support Darwin MACH-O format");
38 llvm_unreachable("ARM does not support Windows COFF format");
41 return createELFStreamer(Ctx, TAB, _OS, _Emitter, RelaxAll);
46 extern "C" void LLVMInitializeMBlazeTarget() {
47 // Register the target.
48 RegisterTargetMachine<MBlazeTargetMachine> X(TheMBlazeTarget);
49 RegisterAsmInfo<MBlazeMCAsmInfo> A(TheMBlazeTarget);
51 // Register the MC code emitter
52 TargetRegistry::RegisterCodeEmitter(TheMBlazeTarget,
53 llvm::createMBlazeMCCodeEmitter);
55 // Register the asm backend
56 TargetRegistry::RegisterAsmBackend(TheMBlazeTarget,
57 createMBlazeAsmBackend);
59 // Register the object streamer
60 TargetRegistry::RegisterObjectStreamer(TheMBlazeTarget,
65 // DataLayout --> Big-endian, 32-bit pointer/ABI/alignment
66 // The stack is always 8 byte aligned
67 // On function prologue, the stack is created by decrementing
68 // its pointer. Once decremented, all references are done with positive
69 // offset from the stack/frame pointer, using StackGrowsUp enables
70 // an easier handling.
72 MBlazeTargetMachine(const Target &T, const std::string &TT,
73 const std::string &FS):
74 LLVMTargetMachine(T, TT),
76 DataLayout("E-p:32:32-i8:8:8-i16:16:16-i64:32:32-"
77 "f64:32:32-v64:32:32-v128:32:32-n32"),
79 FrameInfo(TargetFrameInfo::StackGrowsUp, 8, 0),
80 TLInfo(*this), TSInfo(*this), ELFWriterInfo(*this) {
81 if (getRelocationModel() == Reloc::Default) {
82 setRelocationModel(Reloc::Static);
85 if (getCodeModel() == CodeModel::Default)
86 setCodeModel(CodeModel::Small);
89 // Install an instruction selector pass using
90 // the ISelDag to gen MBlaze code.
91 bool MBlazeTargetMachine::
92 addInstSelector(PassManagerBase &PM, CodeGenOpt::Level OptLevel) {
93 PM.add(createMBlazeISelDag(*this));
97 // Implemented by targets that want to run passes immediately before
98 // machine code is emitted. return true if -print-machineinstrs should
99 // print out the code after the passes.
100 bool MBlazeTargetMachine::
101 addPreEmitPass(PassManagerBase &PM, CodeGenOpt::Level OptLevel) {
102 PM.add(createMBlazeDelaySlotFillerPass(*this));