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 // Register the target.
32 static RegisterTarget<ARMTargetMachine> X("arm", " ARM");
33 static RegisterTarget<ThumbTargetMachine> Y("thumb", " Thumb");
35 // No assembler printer by default
36 ARMTargetMachine::AsmPrinterCtorFn ARMTargetMachine::AsmPrinterCtor = 0;
38 /// ThumbTargetMachine - Create an Thumb architecture model.
40 unsigned ThumbTargetMachine::getJITMatchQuality() {
41 #if defined(__thumb__)
47 unsigned ThumbTargetMachine::getModuleMatchQuality(const Module &M) {
48 std::string TT = M.getTargetTriple();
49 if (TT.size() >= 6 && std::string(TT.begin(), TT.begin()+6) == "thumb-")
52 // If the target triple is something non-thumb, we don't match.
53 if (!TT.empty()) return 0;
55 if (M.getEndianness() == Module::LittleEndian &&
56 M.getPointerSize() == Module::Pointer32)
57 return 10; // Weak match
58 else if (M.getEndianness() != Module::AnyEndianness ||
59 M.getPointerSize() != Module::AnyPointerSize)
60 return 0; // Match for some other target
62 return getJITMatchQuality()/2;
65 ThumbTargetMachine::ThumbTargetMachine(const Module &M, const std::string &FS)
66 : ARMTargetMachine(M, FS, true) {
69 /// TargetMachine ctor - Create an ARM architecture model.
71 ARMTargetMachine::ARMTargetMachine(const Module &M, const std::string &FS,
73 : Subtarget(M, FS, isThumb),
74 DataLayout(Subtarget.isAPCS_ABI() ?
77 std::string("e-p:32:32-f64:32:32-i64:32:32-"
78 "i16:16:32-i8:8:32-i1:8:32-a:0:32") :
79 std::string("e-p:32:32-f64:32:32-i64:32:32")) :
82 std::string("e-p:32:32-f64:64:64-i64:64:64-"
83 "i16:16:32-i8:8:32-i1:8:32-a:0:32") :
84 std::string("e-p:32:32-f64:64:64-i64:64:64"))),
90 unsigned ARMTargetMachine::getJITMatchQuality() {
97 unsigned ARMTargetMachine::getModuleMatchQuality(const Module &M) {
98 std::string TT = M.getTargetTriple();
99 if (TT.size() >= 4 && // Match arm-foo-bar, as well as things like armv5blah-*
100 (TT.substr(0, 4) == "arm-" || TT.substr(0, 4) == "armv"))
102 // If the target triple is something non-arm, we don't match.
103 if (!TT.empty()) return 0;
105 if (M.getEndianness() == Module::LittleEndian &&
106 M.getPointerSize() == Module::Pointer32)
107 return 10; // Weak match
108 else if (M.getEndianness() != Module::AnyEndianness ||
109 M.getPointerSize() != Module::AnyPointerSize)
110 return 0; // Match for some other target
112 return getJITMatchQuality()/2;
116 const TargetAsmInfo *ARMTargetMachine::createTargetAsmInfo() const {
117 switch (Subtarget.TargetType) {
118 case ARMSubtarget::isDarwin:
119 return new ARMDarwinTargetAsmInfo(*this);
120 case ARMSubtarget::isELF:
121 return new ARMELFTargetAsmInfo(*this);
123 return new ARMTargetAsmInfo(*this);
128 // Pass Pipeline Configuration
129 bool ARMTargetMachine::addInstSelector(PassManagerBase &PM, bool Fast) {
130 PM.add(createARMISelDag(*this));
134 bool ARMTargetMachine::addPreEmitPass(PassManagerBase &PM, bool Fast) {
135 // FIXME: temporarily disabling load / store optimization pass for Thumb mode.
136 if (!Fast && !DisableLdStOpti && !Subtarget.isThumb())
137 PM.add(createARMLoadStoreOptimizationPass());
139 if (!Fast && !DisableIfConversion && !Subtarget.isThumb())
140 PM.add(createIfConverterPass());
142 PM.add(createARMConstantIslandPass());
146 bool ARMTargetMachine::addAssemblyEmitter(PassManagerBase &PM, bool Fast,
148 // Output assembly language.
149 assert(AsmPrinterCtor && "AsmPrinter was not linked in");
151 PM.add(AsmPrinterCtor(Out, *this));
157 bool ARMTargetMachine::addCodeEmitter(PassManagerBase &PM, bool Fast,
158 bool DumpAsm, MachineCodeEmitter &MCE) {
159 // FIXME: Move this to TargetJITInfo!
160 setRelocationModel(Reloc::Static);
162 // Machine code emitter pass for ARM.
163 PM.add(createARMCodeEmitterPass(*this, MCE));
165 assert(AsmPrinterCtor && "AsmPrinter was not linked in");
167 PM.add(AsmPrinterCtor(errs(), *this));
173 bool ARMTargetMachine::addSimpleCodeEmitter(PassManagerBase &PM, bool Fast,
174 bool DumpAsm, MachineCodeEmitter &MCE) {
175 // Machine code emitter pass for ARM.
176 PM.add(createARMCodeEmitterPass(*this, MCE));
178 assert(AsmPrinterCtor && "AsmPrinter was not linked in");
180 PM.add(AsmPrinterCtor(errs(), *this));