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/Target/TargetMachineRegistry.h"
22 #include "llvm/Target/TargetOptions.h"
25 static cl::opt<bool> DisableLdStOpti("disable-arm-loadstore-opti", cl::Hidden,
26 cl::desc("Disable load store optimization pass"));
27 static cl::opt<bool> DisableIfConversion("disable-arm-if-conversion",cl::Hidden,
28 cl::desc("Disable if-conversion pass"));
30 // Register the target.
31 static RegisterTarget<ARMTargetMachine> X("arm", " ARM");
32 static RegisterTarget<ThumbTargetMachine> Y("thumb", " Thumb");
34 // No assembler printer by default
35 ARMTargetMachine::AsmPrinterCtorFn ARMTargetMachine::AsmPrinterCtor = 0;
37 /// ThumbTargetMachine - Create an Thumb architecture model.
39 unsigned ThumbTargetMachine::getJITMatchQuality() {
40 #if defined(__thumb__)
46 unsigned ThumbTargetMachine::getModuleMatchQuality(const Module &M) {
47 std::string TT = M.getTargetTriple();
48 if (TT.size() >= 6 && std::string(TT.begin(), TT.begin()+6) == "thumb-")
51 // If the target triple is something non-thumb, we don't match.
52 if (!TT.empty()) return 0;
54 if (M.getEndianness() == Module::LittleEndian &&
55 M.getPointerSize() == Module::Pointer32)
56 return 10; // Weak match
57 else if (M.getEndianness() != Module::AnyEndianness ||
58 M.getPointerSize() != Module::AnyPointerSize)
59 return 0; // Match for some other target
61 return getJITMatchQuality()/2;
64 ThumbTargetMachine::ThumbTargetMachine(const Module &M, const std::string &FS)
65 : ARMTargetMachine(M, FS, true) {
68 /// TargetMachine ctor - Create an ARM architecture model.
70 ARMTargetMachine::ARMTargetMachine(const Module &M, const std::string &FS,
72 : Subtarget(M, FS, isThumb),
73 DataLayout(Subtarget.isAPCS_ABI() ?
76 std::string("e-p:32:32-f64:32:32-i64:32:32-"
77 "i16:16:32-i8:8:32-i1:8:32-a:0:32") :
78 std::string("e-p:32:32-f64:32:32-i64:32:32")) :
81 std::string("e-p:32:32-f64:64:64-i64:64:64-"
82 "i16:16:32-i8:8:32-i1:8:32-a:0:32") :
83 std::string("e-p:32:32-f64:64:64-i64:64:64"))),
89 unsigned ARMTargetMachine::getJITMatchQuality() {
96 unsigned ARMTargetMachine::getModuleMatchQuality(const Module &M) {
97 std::string TT = M.getTargetTriple();
98 if (TT.size() >= 4 && // Match arm-foo-bar, as well as things like armv5blah-*
99 (TT.substr(0, 4) == "arm-" || TT.substr(0, 4) == "armv"))
101 // If the target triple is something non-arm, we don't match.
102 if (!TT.empty()) return 0;
104 if (M.getEndianness() == Module::LittleEndian &&
105 M.getPointerSize() == Module::Pointer32)
106 return 10; // Weak match
107 else if (M.getEndianness() != Module::AnyEndianness ||
108 M.getPointerSize() != Module::AnyPointerSize)
109 return 0; // Match for some other target
111 return getJITMatchQuality()/2;
115 const TargetAsmInfo *ARMTargetMachine::createTargetAsmInfo() const {
116 switch (Subtarget.TargetType) {
117 case ARMSubtarget::isDarwin:
118 return new ARMDarwinTargetAsmInfo(*this);
119 case ARMSubtarget::isELF:
120 return new ARMELFTargetAsmInfo(*this);
122 return new ARMTargetAsmInfo(*this);
127 // Pass Pipeline Configuration
128 bool ARMTargetMachine::addInstSelector(PassManagerBase &PM, bool Fast) {
129 PM.add(createARMISelDag(*this));
133 bool ARMTargetMachine::addPreEmitPass(PassManagerBase &PM, bool Fast) {
134 // FIXME: temporarily disabling load / store optimization pass for Thumb mode.
135 if (!Fast && !DisableLdStOpti && !Subtarget.isThumb())
136 PM.add(createARMLoadStoreOptimizationPass());
138 if (!Fast && !DisableIfConversion && !Subtarget.isThumb())
139 PM.add(createIfConverterPass());
141 PM.add(createARMConstantIslandPass());
145 bool ARMTargetMachine::addAssemblyEmitter(PassManagerBase &PM, bool Fast,
147 // Output assembly language.
148 assert(AsmPrinterCtor && "AsmPrinter was not linked in");
150 PM.add(AsmPrinterCtor(Out, *this));
156 bool ARMTargetMachine::addCodeEmitter(PassManagerBase &PM, bool Fast,
157 bool DumpAsm, MachineCodeEmitter &MCE) {
158 // FIXME: Move this to TargetJITInfo!
159 setRelocationModel(Reloc::Static);
161 // Machine code emitter pass for ARM.
162 PM.add(createARMCodeEmitterPass(*this, MCE));
164 assert(AsmPrinterCtor && "AsmPrinter was not linked in");
166 PM.add(AsmPrinterCtor(*cerr.stream(), *this));
172 bool ARMTargetMachine::addSimpleCodeEmitter(PassManagerBase &PM, bool Fast,
173 bool DumpAsm, MachineCodeEmitter &MCE) {
174 // Machine code emitter pass for ARM.
175 PM.add(createARMCodeEmitterPass(*this, MCE));
177 assert(AsmPrinterCtor && "AsmPrinter was not linked in");
179 PM.add(AsmPrinterCtor(*cerr.stream(), *this));