1 //===-- PPCTargetMachine.cpp - Define TargetMachine for PowerPC -----------===//
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 // 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"
20 #include "llvm/Target/TargetOptions.h"
21 #include "llvm/Support/raw_ostream.h"
24 /// PowerPCTargetMachineModule - Note that this is used on hosts that
25 /// cannot link in a library unless there are references into the
26 /// library. In particular, it seems that it is not possible to get
27 /// things to work on Win32 without this. Though it is unused, do not
29 extern "C" int PowerPCTargetMachineModule;
30 int PowerPCTargetMachineModule = 0;
32 // Register the targets
33 static RegisterTarget<PPC32TargetMachine>
34 X("ppc32", "PowerPC 32");
35 static RegisterTarget<PPC64TargetMachine>
36 Y("ppc64", "PowerPC 64");
38 // Force static initialization.
39 extern "C" void LLVMInitializePowerPCTarget() { }
41 // No assembler printer by default
42 PPCTargetMachine::AsmPrinterCtorFn PPCTargetMachine::AsmPrinterCtor = 0;
44 const TargetAsmInfo *PPCTargetMachine::createTargetAsmInfo() const {
45 if (Subtarget.isDarwin())
46 return new PPCDarwinTargetAsmInfo(*this);
48 return new PPCLinuxTargetAsmInfo(*this);
51 unsigned PPC32TargetMachine::getJITMatchQuality() {
52 #if defined(__POWERPC__) || defined (__ppc__) || defined(_POWER) || defined(__PPC__)
53 if (sizeof(void*) == 4)
58 unsigned PPC64TargetMachine::getJITMatchQuality() {
59 #if defined(__POWERPC__) || defined (__ppc__) || defined(_POWER) || defined(__PPC__)
60 if (sizeof(void*) == 8)
66 unsigned PPC32TargetMachine::getModuleMatchQuality(const Module &M) {
67 // We strongly match "powerpc-*".
68 std::string TT = M.getTargetTriple();
69 if (TT.size() >= 8 && std::string(TT.begin(), TT.begin()+8) == "powerpc-")
72 // If the target triple is something non-powerpc, we don't match.
73 if (!TT.empty()) return 0;
75 if (M.getEndianness() == Module::BigEndian &&
76 M.getPointerSize() == Module::Pointer32)
77 return 10; // Weak match
78 else if (M.getEndianness() != Module::AnyEndianness ||
79 M.getPointerSize() != Module::AnyPointerSize)
80 return 0; // Match for some other target
82 return getJITMatchQuality()/2;
85 unsigned PPC64TargetMachine::getModuleMatchQuality(const Module &M) {
86 // We strongly match "powerpc64-*".
87 std::string TT = M.getTargetTriple();
88 if (TT.size() >= 10 && std::string(TT.begin(), TT.begin()+10) == "powerpc64-")
91 if (M.getEndianness() == Module::BigEndian &&
92 M.getPointerSize() == Module::Pointer64)
93 return 10; // Weak match
94 else if (M.getEndianness() != Module::AnyEndianness ||
95 M.getPointerSize() != Module::AnyPointerSize)
96 return 0; // Match for some other target
98 return getJITMatchQuality()/2;
102 PPCTargetMachine::PPCTargetMachine(const Module &M, const std::string &FS,
104 : Subtarget(*this, M, FS, is64Bit),
105 DataLayout(Subtarget.getTargetDataString()), InstrInfo(*this),
106 FrameInfo(*this, is64Bit), JITInfo(*this, is64Bit), TLInfo(*this),
107 InstrItins(Subtarget.getInstrItineraryData()), MachOWriterInfo(*this) {
109 if (getRelocationModel() == Reloc::Default) {
110 if (Subtarget.isDarwin())
111 setRelocationModel(Reloc::DynamicNoPIC);
113 setRelocationModel(Reloc::Static);
117 /// Override this for PowerPC. Tail merging happily breaks up instruction issue
118 /// groups, which typically degrades performance.
119 bool PPCTargetMachine::getEnableTailMergeDefault() const { return false; }
121 PPC32TargetMachine::PPC32TargetMachine(const Module &M, const std::string &FS)
122 : PPCTargetMachine(M, FS, false) {
126 PPC64TargetMachine::PPC64TargetMachine(const Module &M, const std::string &FS)
127 : PPCTargetMachine(M, FS, true) {
131 //===----------------------------------------------------------------------===//
132 // Pass Pipeline Configuration
133 //===----------------------------------------------------------------------===//
135 bool PPCTargetMachine::addInstSelector(PassManagerBase &PM,
136 CodeGenOpt::Level OptLevel) {
137 // Install an instruction selector.
138 PM.add(createPPCISelDag(*this));
142 bool PPCTargetMachine::addPreEmitPass(PassManagerBase &PM,
143 CodeGenOpt::Level OptLevel) {
144 // Must run branch selection immediately preceding the asm printer.
145 PM.add(createPPCBranchSelectionPass());
149 bool PPCTargetMachine::addAssemblyEmitter(PassManagerBase &PM,
150 CodeGenOpt::Level OptLevel,
153 assert(AsmPrinterCtor && "AsmPrinter was not linked in");
155 PM.add(AsmPrinterCtor(Out, *this, Verbose));
160 bool PPCTargetMachine::addCodeEmitter(PassManagerBase &PM,
161 CodeGenOpt::Level OptLevel,
162 bool DumpAsm, MachineCodeEmitter &MCE) {
163 // The JIT should use the static relocation model in ppc32 mode, PIC in ppc64.
164 // FIXME: This should be moved to TargetJITInfo!!
165 if (Subtarget.isPPC64()) {
166 // We use PIC codegen in ppc64 mode, because otherwise we'd have to use many
167 // instructions to materialize arbitrary global variable + function +
168 // constant pool addresses.
169 setRelocationModel(Reloc::PIC_);
170 // Temporary workaround for the inability of PPC64 JIT to handle jump
172 DisableJumpTables = true;
174 setRelocationModel(Reloc::Static);
177 // Inform the subtarget that we are in JIT mode. FIXME: does this break macho
179 Subtarget.SetJITMode();
181 // Machine code emitter pass for PowerPC.
182 PM.add(createPPCCodeEmitterPass(*this, MCE));
184 assert(AsmPrinterCtor && "AsmPrinter was not linked in");
186 PM.add(AsmPrinterCtor(errs(), *this, true));
192 bool PPCTargetMachine::addCodeEmitter(PassManagerBase &PM,
193 CodeGenOpt::Level OptLevel,
194 bool DumpAsm, JITCodeEmitter &JCE) {
195 // The JIT should use the static relocation model in ppc32 mode, PIC in ppc64.
196 // FIXME: This should be moved to TargetJITInfo!!
197 if (Subtarget.isPPC64()) {
198 // We use PIC codegen in ppc64 mode, because otherwise we'd have to use many
199 // instructions to materialize arbitrary global variable + function +
200 // constant pool addresses.
201 setRelocationModel(Reloc::PIC_);
202 // Temporary workaround for the inability of PPC64 JIT to handle jump
204 DisableJumpTables = true;
206 setRelocationModel(Reloc::Static);
209 // Inform the subtarget that we are in JIT mode. FIXME: does this break macho
211 Subtarget.SetJITMode();
213 // Machine code emitter pass for PowerPC.
214 PM.add(createPPCJITCodeEmitterPass(*this, JCE));
216 assert(AsmPrinterCtor && "AsmPrinter was not linked in");
218 PM.add(AsmPrinterCtor(errs(), *this, true));
224 bool PPCTargetMachine::addCodeEmitter(PassManagerBase &PM,
225 CodeGenOpt::Level OptLevel,
226 bool DumpAsm, ObjectCodeEmitter &OCE) {
227 // The JIT should use the static relocation model in ppc32 mode, PIC in ppc64.
228 // FIXME: This should be moved to TargetJITInfo!!
229 if (Subtarget.isPPC64()) {
230 // We use PIC codegen in ppc64 mode, because otherwise we'd have to use many
231 // instructions to materialize arbitrary global variable + function +
232 // constant pool addresses.
233 setRelocationModel(Reloc::PIC_);
234 // Temporary workaround for the inability of PPC64 JIT to handle jump
236 DisableJumpTables = true;
238 setRelocationModel(Reloc::Static);
241 // Inform the subtarget that we are in JIT mode. FIXME: does this break macho
243 Subtarget.SetJITMode();
245 // Machine code emitter pass for PowerPC.
246 PM.add(createPPCObjectCodeEmitterPass(*this, OCE));
248 assert(AsmPrinterCtor && "AsmPrinter was not linked in");
250 PM.add(AsmPrinterCtor(errs(), *this, true));
256 bool PPCTargetMachine::addSimpleCodeEmitter(PassManagerBase &PM,
257 CodeGenOpt::Level OptLevel,
259 MachineCodeEmitter &MCE) {
260 // Machine code emitter pass for PowerPC.
261 PM.add(createPPCCodeEmitterPass(*this, MCE));
263 assert(AsmPrinterCtor && "AsmPrinter was not linked in");
265 PM.add(AsmPrinterCtor(errs(), *this, true));
271 bool PPCTargetMachine::addSimpleCodeEmitter(PassManagerBase &PM,
272 CodeGenOpt::Level OptLevel,
274 JITCodeEmitter &JCE) {
275 // Machine code emitter pass for PowerPC.
276 PM.add(createPPCJITCodeEmitterPass(*this, JCE));
278 assert(AsmPrinterCtor && "AsmPrinter was not linked in");
280 PM.add(AsmPrinterCtor(errs(), *this, true));
286 bool PPCTargetMachine::addSimpleCodeEmitter(PassManagerBase &PM,
287 CodeGenOpt::Level OptLevel,
289 ObjectCodeEmitter &OCE) {
290 // Machine code emitter pass for PowerPC.
291 PM.add(createPPCObjectCodeEmitterPass(*this, OCE));
293 assert(AsmPrinterCtor && "AsmPrinter was not linked in");
295 PM.add(AsmPrinterCtor(errs(), *this, true));