1 //===-- ARMTargetMachine.cpp - Define TargetMachine for ARM ---------------===//
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 //===----------------------------------------------------------------------===//
11 //===----------------------------------------------------------------------===//
13 #include "ARMTargetMachine.h"
14 #include "ARMTargetAsmInfo.h"
15 #include "ARMFrameInfo.h"
17 #include "llvm/Module.h"
18 #include "llvm/PassManager.h"
19 #include "llvm/CodeGen/Passes.h"
20 #include "llvm/Support/CommandLine.h"
21 #include "llvm/Support/raw_ostream.h"
22 #include "llvm/Target/TargetMachineRegistry.h"
23 #include "llvm/Target/TargetOptions.h"
26 static cl::opt<bool> DisableLdStOpti("disable-arm-loadstore-opti", cl::Hidden,
27 cl::desc("Disable load store optimization pass"));
28 static cl::opt<bool> DisableIfConversion("disable-arm-if-conversion",cl::Hidden,
29 cl::desc("Disable if-conversion pass"));
31 /// ARMTargetMachineModule - Note that this is used on hosts that cannot link
32 /// in a library unless there are references into the library. In particular,
33 /// it seems that it is not possible to get things to work on Win32 without
34 /// this. Though it is unused, do not remove it.
35 extern "C" int ARMTargetMachineModule;
36 int ARMTargetMachineModule = 0;
38 // Register the target.
39 static RegisterTarget<ARMTargetMachine> X("arm", "ARM");
40 static RegisterTarget<ThumbTargetMachine> Y("thumb", "Thumb");
42 // Force static initialization.
43 extern "C" void LLVMInitializeARMTarget() { }
45 // No assembler printer by default
46 ARMBaseTargetMachine::AsmPrinterCtorFn ARMBaseTargetMachine::AsmPrinterCtor = 0;
48 /// ThumbTargetMachine - Create an Thumb architecture model.
50 unsigned ThumbTargetMachine::getJITMatchQuality() {
51 #if defined(__thumb__)
57 unsigned ThumbTargetMachine::getModuleMatchQuality(const Module &M) {
58 std::string TT = M.getTargetTriple();
59 // Match thumb-foo-bar, as well as things like thumbv5blah-*
61 (TT.substr(0, 6) == "thumb-" || TT.substr(0, 6) == "thumbv"))
64 // If the target triple is something non-thumb, we don't match.
65 if (!TT.empty()) return 0;
67 if (M.getEndianness() == Module::LittleEndian &&
68 M.getPointerSize() == Module::Pointer32)
69 return 10; // Weak match
70 else if (M.getEndianness() != Module::AnyEndianness ||
71 M.getPointerSize() != Module::AnyPointerSize)
72 return 0; // Match for some other target
74 return getJITMatchQuality()/2;
77 /// TargetMachine ctor - Create an ARM architecture model.
79 ARMBaseTargetMachine::ARMBaseTargetMachine(const Module &M,
80 const std::string &FS,
82 : Subtarget(M, FS, isThumb),
85 InstrItins(Subtarget.getInstrItineraryData()) {
86 DefRelocModel = getRelocationModel();
89 ARMTargetMachine::ARMTargetMachine(const Module &M, const std::string &FS)
90 : ARMBaseTargetMachine(M, FS, false), InstrInfo(Subtarget),
91 DataLayout(Subtarget.isAPCS_ABI() ?
92 std::string("e-p:32:32-f64:32:32-i64:32:32") :
93 std::string("e-p:32:32-f64:64:64-i64:64:64")),
97 ThumbTargetMachine::ThumbTargetMachine(const Module &M, const std::string &FS)
98 : ARMBaseTargetMachine(M, FS, true),
99 DataLayout(Subtarget.isAPCS_ABI() ?
100 std::string("e-p:32:32-f64:32:32-i64:32:32-"
101 "i16:16:32-i8:8:32-i1:8:32-a:0:32") :
102 std::string("e-p:32:32-f64:64:64-i64:64:64-"
103 "i16:16:32-i8:8:32-i1:8:32-a:0:32")),
105 // Create the approriate type of Thumb InstrInfo
106 if (Subtarget.hasThumb2())
107 InstrInfo = new Thumb2InstrInfo(Subtarget);
109 InstrInfo = new Thumb1InstrInfo(Subtarget);
112 unsigned ARMTargetMachine::getJITMatchQuality() {
119 unsigned ARMTargetMachine::getModuleMatchQuality(const Module &M) {
120 std::string TT = M.getTargetTriple();
121 // Match arm-foo-bar, as well as things like armv5blah-*
122 if (TT.size() >= 4 &&
123 (TT.substr(0, 4) == "arm-" || TT.substr(0, 4) == "armv"))
125 // If the target triple is something non-arm, we don't match.
126 if (!TT.empty()) return 0;
128 if (M.getEndianness() == Module::LittleEndian &&
129 M.getPointerSize() == Module::Pointer32)
130 return 10; // Weak match
131 else if (M.getEndianness() != Module::AnyEndianness ||
132 M.getPointerSize() != Module::AnyPointerSize)
133 return 0; // Match for some other target
135 return getJITMatchQuality()/2;
139 const TargetAsmInfo *ARMBaseTargetMachine::createTargetAsmInfo() const {
140 switch (Subtarget.TargetType) {
141 case ARMSubtarget::isDarwin:
142 return new ARMDarwinTargetAsmInfo(*this);
143 case ARMSubtarget::isELF:
144 return new ARMELFTargetAsmInfo(*this);
146 return new ARMGenericTargetAsmInfo(*this);
151 // Pass Pipeline Configuration
152 bool ARMBaseTargetMachine::addInstSelector(PassManagerBase &PM,
153 CodeGenOpt::Level OptLevel) {
154 PM.add(createARMISelDag(*this));
158 bool ARMBaseTargetMachine::addPreRegAlloc(PassManagerBase &PM,
159 CodeGenOpt::Level OptLevel) {
160 // FIXME: temporarily disabling load / store optimization pass for Thumb mode.
161 if (OptLevel != CodeGenOpt::None && !DisableLdStOpti && !Subtarget.isThumb())
162 PM.add(createARMLoadStoreOptimizationPass(true));
166 bool ARMBaseTargetMachine::addPreEmitPass(PassManagerBase &PM,
167 CodeGenOpt::Level OptLevel) {
168 // FIXME: temporarily disabling load / store optimization pass for Thumb mode.
169 if (OptLevel != CodeGenOpt::None && !DisableLdStOpti && !Subtarget.isThumb())
170 PM.add(createARMLoadStoreOptimizationPass());
172 if (OptLevel != CodeGenOpt::None &&
173 !DisableIfConversion && !Subtarget.isThumb())
174 PM.add(createIfConverterPass());
176 PM.add(createARMConstantIslandPass());
180 bool ARMBaseTargetMachine::addAssemblyEmitter(PassManagerBase &PM,
181 CodeGenOpt::Level OptLevel,
184 // Output assembly language.
185 assert(AsmPrinterCtor && "AsmPrinter was not linked in");
187 PM.add(AsmPrinterCtor(Out, *this, Verbose));
193 bool ARMBaseTargetMachine::addCodeEmitter(PassManagerBase &PM,
194 CodeGenOpt::Level OptLevel,
196 MachineCodeEmitter &MCE) {
197 // FIXME: Move this to TargetJITInfo!
198 if (DefRelocModel == Reloc::Default)
199 setRelocationModel(Reloc::Static);
201 // Machine code emitter pass for ARM.
202 PM.add(createARMCodeEmitterPass(*this, MCE));
204 assert(AsmPrinterCtor && "AsmPrinter was not linked in");
206 PM.add(AsmPrinterCtor(errs(), *this, true));
212 bool ARMBaseTargetMachine::addCodeEmitter(PassManagerBase &PM,
213 CodeGenOpt::Level OptLevel,
215 JITCodeEmitter &JCE) {
216 // FIXME: Move this to TargetJITInfo!
217 if (DefRelocModel == Reloc::Default)
218 setRelocationModel(Reloc::Static);
220 // Machine code emitter pass for ARM.
221 PM.add(createARMJITCodeEmitterPass(*this, JCE));
223 assert(AsmPrinterCtor && "AsmPrinter was not linked in");
225 PM.add(AsmPrinterCtor(errs(), *this, true));
231 bool ARMBaseTargetMachine::addSimpleCodeEmitter(PassManagerBase &PM,
232 CodeGenOpt::Level OptLevel,
234 MachineCodeEmitter &MCE) {
235 // Machine code emitter pass for ARM.
236 PM.add(createARMCodeEmitterPass(*this, MCE));
238 assert(AsmPrinterCtor && "AsmPrinter was not linked in");
240 PM.add(AsmPrinterCtor(errs(), *this, true));
246 bool ARMBaseTargetMachine::addSimpleCodeEmitter(PassManagerBase &PM,
247 CodeGenOpt::Level OptLevel,
249 JITCodeEmitter &JCE) {
250 // Machine code emitter pass for ARM.
251 PM.add(createARMJITCodeEmitterPass(*this, JCE));
253 assert(AsmPrinterCtor && "AsmPrinter was not linked in");
255 PM.add(AsmPrinterCtor(errs(), *this, true));