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"
27 EnablePreLdStOpti("arm-pre-alloc-loadstore-opti", cl::Hidden,
28 cl::desc("Enable pre-regalloc load store optimization pass"));
29 static cl::opt<bool> DisableLdStOpti("disable-arm-loadstore-opti", cl::Hidden,
30 cl::desc("Disable load store optimization pass"));
31 static cl::opt<bool> DisableIfConversion("disable-arm-if-conversion",cl::Hidden,
32 cl::desc("Disable if-conversion pass"));
34 /// ARMTargetMachineModule - Note that this is used on hosts that cannot link
35 /// in a library unless there are references into the library. In particular,
36 /// it seems that it is not possible to get things to work on Win32 without
37 /// this. Though it is unused, do not remove it.
38 extern "C" int ARMTargetMachineModule;
39 int ARMTargetMachineModule = 0;
41 // Register the target.
42 static RegisterTarget<ARMTargetMachine> X("arm", "ARM");
43 static RegisterTarget<ThumbTargetMachine> Y("thumb", "Thumb");
45 // No assembler printer by default
46 ARMTargetMachine::AsmPrinterCtorFn ARMTargetMachine::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 ThumbTargetMachine::ThumbTargetMachine(const Module &M, const std::string &FS)
78 : ARMTargetMachine(M, FS, true) {
81 /// TargetMachine ctor - Create an ARM architecture model.
83 ARMTargetMachine::ARMTargetMachine(const Module &M, const std::string &FS,
85 : Subtarget(M, FS, isThumb),
86 DataLayout(Subtarget.isAPCS_ABI() ?
89 std::string("e-p:32:32-f64:32:32-i64:32:32-"
90 "i16:16:32-i8:8:32-i1:8:32-a:0:32") :
91 std::string("e-p:32:32-f64:32:32-i64:32:32")) :
94 std::string("e-p:32:32-f64:64:64-i64:64:64-"
95 "i16:16:32-i8:8:32-i1:8:32-a:0:32") :
96 std::string("e-p:32:32-f64:64:64-i64:64:64"))),
101 DefRelocModel = getRelocationModel();
104 unsigned ARMTargetMachine::getJITMatchQuality() {
111 unsigned ARMTargetMachine::getModuleMatchQuality(const Module &M) {
112 std::string TT = M.getTargetTriple();
113 // Match arm-foo-bar, as well as things like armv5blah-*
114 if (TT.size() >= 4 &&
115 (TT.substr(0, 4) == "arm-" || TT.substr(0, 4) == "armv"))
117 // If the target triple is something non-arm, we don't match.
118 if (!TT.empty()) return 0;
120 if (M.getEndianness() == Module::LittleEndian &&
121 M.getPointerSize() == Module::Pointer32)
122 return 10; // Weak match
123 else if (M.getEndianness() != Module::AnyEndianness ||
124 M.getPointerSize() != Module::AnyPointerSize)
125 return 0; // Match for some other target
127 return getJITMatchQuality()/2;
131 const TargetAsmInfo *ARMTargetMachine::createTargetAsmInfo() const {
132 switch (Subtarget.TargetType) {
133 case ARMSubtarget::isDarwin:
134 return new ARMDarwinTargetAsmInfo(*this);
135 case ARMSubtarget::isELF:
136 return new ARMELFTargetAsmInfo(*this);
138 return new ARMGenericTargetAsmInfo(*this);
143 // Pass Pipeline Configuration
144 bool ARMTargetMachine::addInstSelector(PassManagerBase &PM,
145 CodeGenOpt::Level OptLevel) {
146 PM.add(createARMISelDag(*this));
150 bool ARMTargetMachine::addPreRegAlloc(PassManagerBase &PM,
151 CodeGenOpt::Level OptLevel) {
152 if (!EnablePreLdStOpti)
154 // FIXME: temporarily disabling load / store optimization pass for Thumb mode.
155 if (OptLevel != CodeGenOpt::None && !DisableLdStOpti && !Subtarget.isThumb())
156 PM.add(createARMLoadStoreOptimizationPass(true));
160 bool ARMTargetMachine::addPreEmitPass(PassManagerBase &PM,
161 CodeGenOpt::Level OptLevel) {
162 // FIXME: temporarily disabling load / store optimization pass for Thumb mode.
163 if (OptLevel != CodeGenOpt::None && !DisableLdStOpti && !Subtarget.isThumb())
164 PM.add(createARMLoadStoreOptimizationPass());
166 if (OptLevel != CodeGenOpt::None &&
167 !DisableIfConversion && !Subtarget.isThumb())
168 PM.add(createIfConverterPass());
170 PM.add(createARMConstantIslandPass());
174 bool ARMTargetMachine::addAssemblyEmitter(PassManagerBase &PM,
175 CodeGenOpt::Level OptLevel,
178 // Output assembly language.
179 assert(AsmPrinterCtor && "AsmPrinter was not linked in");
181 PM.add(AsmPrinterCtor(Out, *this, OptLevel, Verbose));
187 bool ARMTargetMachine::addCodeEmitter(PassManagerBase &PM,
188 CodeGenOpt::Level OptLevel,
190 MachineCodeEmitter &MCE) {
191 // FIXME: Move this to TargetJITInfo!
192 if (DefRelocModel == Reloc::Default)
193 setRelocationModel(Reloc::Static);
195 // Machine code emitter pass for ARM.
196 PM.add(createARMCodeEmitterPass(*this, MCE));
198 assert(AsmPrinterCtor && "AsmPrinter was not linked in");
200 PM.add(AsmPrinterCtor(errs(), *this, OptLevel, true));
206 bool ARMTargetMachine::addCodeEmitter(PassManagerBase &PM,
207 CodeGenOpt::Level OptLevel,
209 JITCodeEmitter &JCE) {
210 // FIXME: Move this to TargetJITInfo!
211 if (DefRelocModel == Reloc::Default)
212 setRelocationModel(Reloc::Static);
214 // Machine code emitter pass for ARM.
215 PM.add(createARMJITCodeEmitterPass(*this, JCE));
217 assert(AsmPrinterCtor && "AsmPrinter was not linked in");
219 PM.add(AsmPrinterCtor(errs(), *this, OptLevel, true));
225 bool ARMTargetMachine::addSimpleCodeEmitter(PassManagerBase &PM,
226 CodeGenOpt::Level OptLevel,
228 MachineCodeEmitter &MCE) {
229 // Machine code emitter pass for ARM.
230 PM.add(createARMCodeEmitterPass(*this, MCE));
232 assert(AsmPrinterCtor && "AsmPrinter was not linked in");
234 PM.add(AsmPrinterCtor(errs(), *this, OptLevel, true));
240 bool ARMTargetMachine::addSimpleCodeEmitter(PassManagerBase &PM,
241 CodeGenOpt::Level OptLevel,
243 JITCodeEmitter &JCE) {
244 // Machine code emitter pass for ARM.
245 PM.add(createARMJITCodeEmitterPass(*this, JCE));
247 assert(AsmPrinterCtor && "AsmPrinter was not linked in");
249 PM.add(AsmPrinterCtor(errs(), *this, OptLevel, true));