1 //===-- PPCTargetMachine.cpp - Define TargetMachine for PowerPC -----------===//
3 // The LLVM Compiler Infrastructure
5 // This file was developed by the LLVM research group and is distributed under
6 // the University of Illinois Open Source License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // Top-level implementation for the PowerPC target.
12 //===----------------------------------------------------------------------===//
15 #include "PPCTargetAsmInfo.h"
16 #include "PPCTargetMachine.h"
17 #include "llvm/Module.h"
18 #include "llvm/PassManager.h"
19 #include "llvm/Target/TargetMachineRegistry.h"
23 // Register the targets
24 RegisterTarget<PPC32TargetMachine>
25 X("ppc32", " PowerPC 32");
26 RegisterTarget<PPC64TargetMachine>
27 Y("ppc64", " PowerPC 64");
30 const TargetAsmInfo *PPCTargetMachine::createTargetAsmInfo() const {
31 if (Subtarget.isDarwin())
32 return new DarwinTargetAsmInfo(*this);
34 return new LinuxTargetAsmInfo(*this);
37 unsigned PPC32TargetMachine::getJITMatchQuality() {
38 #if defined(__POWERPC__) || defined (__ppc__) || defined(_POWER)
39 if (sizeof(void*) == 4)
44 unsigned PPC64TargetMachine::getJITMatchQuality() {
45 #if defined(__POWERPC__) || defined (__ppc__) || defined(_POWER)
46 if (sizeof(void*) == 8)
52 unsigned PPC32TargetMachine::getModuleMatchQuality(const Module &M) {
53 // We strongly match "powerpc-*".
54 std::string TT = M.getTargetTriple();
55 if (TT.size() >= 8 && std::string(TT.begin(), TT.begin()+8) == "powerpc-")
58 if (M.getEndianness() == Module::BigEndian &&
59 M.getPointerSize() == Module::Pointer32)
60 return 10; // Weak match
61 else if (M.getEndianness() != Module::AnyEndianness ||
62 M.getPointerSize() != Module::AnyPointerSize)
63 return 0; // Match for some other target
65 return getJITMatchQuality()/2;
68 unsigned PPC64TargetMachine::getModuleMatchQuality(const Module &M) {
69 // We strongly match "powerpc64-*".
70 std::string TT = M.getTargetTriple();
71 if (TT.size() >= 10 && std::string(TT.begin(), TT.begin()+10) == "powerpc64-")
74 if (M.getEndianness() == Module::BigEndian &&
75 M.getPointerSize() == Module::Pointer64)
76 return 10; // Weak match
77 else if (M.getEndianness() != Module::AnyEndianness ||
78 M.getPointerSize() != Module::AnyPointerSize)
79 return 0; // Match for some other target
81 return getJITMatchQuality()/2;
85 PPCTargetMachine::PPCTargetMachine(const Module &M, const std::string &FS,
87 : Subtarget(*this, M, FS, is64Bit),
88 DataLayout(Subtarget.getTargetDataString()), InstrInfo(*this),
89 FrameInfo(*this, is64Bit), JITInfo(*this, is64Bit), TLInfo(*this),
90 InstrItins(Subtarget.getInstrItineraryData()) {
92 if (getRelocationModel() == Reloc::Default)
93 if (Subtarget.isDarwin())
94 setRelocationModel(Reloc::DynamicNoPIC);
96 setRelocationModel(Reloc::Static);
99 PPC32TargetMachine::PPC32TargetMachine(const Module &M, const std::string &FS)
100 : PPCTargetMachine(M, FS, false) {
104 PPC64TargetMachine::PPC64TargetMachine(const Module &M, const std::string &FS)
105 : PPCTargetMachine(M, FS, true) {
109 //===----------------------------------------------------------------------===//
110 // Pass Pipeline Configuration
111 //===----------------------------------------------------------------------===//
113 bool PPCTargetMachine::addInstSelector(FunctionPassManager &PM, bool Fast) {
114 // Install an instruction selector.
115 PM.add(createPPCISelDag(*this));
119 bool PPCTargetMachine::addPreEmitPass(FunctionPassManager &PM, bool Fast) {
121 // Must run branch selection immediately preceding the asm printer.
122 PM.add(createPPCBranchSelectionPass());
126 bool PPCTargetMachine::addAssemblyEmitter(FunctionPassManager &PM, bool Fast,
128 PM.add(createPPCAsmPrinterPass(Out, *this));
132 bool PPCTargetMachine::addObjectWriter(FunctionPassManager &PM, bool Fast,
134 // FIXME: until the macho writer is 100% functional, diable this by default.
137 // FIXME: support PPC ELF files at some point
138 addPPCMachOObjectWriterPass(PM, Out, *this);
142 bool PPCTargetMachine::addCodeEmitter(FunctionPassManager &PM, bool Fast,
143 MachineCodeEmitter &MCE) {
144 // The JIT should use the static relocation model in ppc32 mode, PIC in ppc64.
145 // FIXME: This should be moved to TargetJITInfo!!
146 if (Subtarget.isPPC64()) {
147 // We use PIC codegen in ppc64 mode, because otherwise we'd have to use many
148 // instructions to materialize arbitrary global variable + function +
149 // constant pool addresses.
150 setRelocationModel(Reloc::PIC_);
152 setRelocationModel(Reloc::Static);
155 // Inform the subtarget that we are in JIT mode. FIXME: does this break macho
157 Subtarget.SetJITMode();
159 // Machine code emitter pass for PowerPC.
160 PM.add(createPPCCodeEmitterPass(*this, MCE));