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 MCAsmInfo
*createMCAsmInfo(const Target
&T
, StringRef TT
) {
26 switch (TheTriple
.getOS()) {
28 return new MBlazeMCAsmInfo();
32 static MCStreamer
*createMCStreamer(const Target
&T
, const std::string
&TT
,
33 MCContext
&Ctx
, TargetAsmBackend
&TAB
,
35 MCCodeEmitter
*_Emitter
,
38 switch (TheTriple
.getOS()) {
40 llvm_unreachable("MBlaze does not support Darwin MACH-O format");
46 llvm_unreachable("ARM does not support Windows COFF format");
49 return createELFStreamer(Ctx
, TAB
, _OS
, _Emitter
, RelaxAll
);
54 extern "C" void LLVMInitializeMBlazeTarget() {
55 // Register the target.
56 RegisterTargetMachine
<MBlazeTargetMachine
> X(TheMBlazeTarget
);
58 // Register the target asm info.
59 RegisterAsmInfoFn
A(TheMBlazeTarget
, createMCAsmInfo
);
61 // Register the MC code emitter
62 TargetRegistry::RegisterCodeEmitter(TheMBlazeTarget
,
63 llvm::createMBlazeMCCodeEmitter
);
65 // Register the asm backend
66 TargetRegistry::RegisterAsmBackend(TheMBlazeTarget
,
67 createMBlazeAsmBackend
);
69 // Register the object streamer
70 TargetRegistry::RegisterObjectStreamer(TheMBlazeTarget
,
75 // DataLayout --> Big-endian, 32-bit pointer/ABI/alignment
76 // The stack is always 8 byte aligned
77 // On function prologue, the stack is created by decrementing
78 // its pointer. Once decremented, all references are done with positive
79 // offset from the stack/frame pointer, using StackGrowsUp enables
80 // an easier handling.
82 MBlazeTargetMachine(const Target
&T
, const std::string
&TT
,
83 const std::string
&FS
):
84 LLVMTargetMachine(T
, TT
),
86 DataLayout("E-p:32:32:32-i8:8:8-i16:16:16"),
88 FrameInfo(TargetFrameInfo::StackGrowsUp
, 8, 0),
89 TLInfo(*this), TSInfo(*this), ELFWriterInfo(*this) {
90 if (getRelocationModel() == Reloc::Default
) {
91 setRelocationModel(Reloc::Static
);
94 if (getCodeModel() == CodeModel::Default
)
95 setCodeModel(CodeModel::Small
);
98 // Install an instruction selector pass using
99 // the ISelDag to gen MBlaze code.
100 bool MBlazeTargetMachine::
101 addInstSelector(PassManagerBase
&PM
, CodeGenOpt::Level OptLevel
) {
102 PM
.add(createMBlazeISelDag(*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 MBlazeTargetMachine::
110 addPreEmitPass(PassManagerBase
&PM
, CodeGenOpt::Level OptLevel
) {
111 PM
.add(createMBlazeDelaySlotFillerPass(*this));