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 /// ThumbTargetMachine - Create an Thumb architecture model.
36 unsigned ThumbTargetMachine::getJITMatchQuality() {
37 #if defined(__thumb__)
43 unsigned ThumbTargetMachine::getModuleMatchQuality(const Module &M) {
44 std::string TT = M.getTargetTriple();
45 if (TT.size() >= 6 && std::string(TT.begin(), TT.begin()+6) == "thumb-")
48 // If the target triple is something non-thumb, we don't match.
49 if (!TT.empty()) return 0;
51 if (M.getEndianness() == Module::LittleEndian &&
52 M.getPointerSize() == Module::Pointer32)
53 return 10; // Weak match
54 else if (M.getEndianness() != Module::AnyEndianness ||
55 M.getPointerSize() != Module::AnyPointerSize)
56 return 0; // Match for some other target
58 return getJITMatchQuality()/2;
61 ThumbTargetMachine::ThumbTargetMachine(const Module &M, const std::string &FS)
62 : ARMTargetMachine(M, FS, true) {
65 /// TargetMachine ctor - Create an ARM architecture model.
67 ARMTargetMachine::ARMTargetMachine(const Module &M, const std::string &FS,
69 : Subtarget(M, FS, isThumb),
70 DataLayout(Subtarget.isAPCS_ABI() ?
73 std::string("e-p:32:32-f64:32:32-i64:32:32-"
74 "i16:16:32-i8:8:32-i1:8:32-a:0:32") :
75 std::string("e-p:32:32-f64:32:32-i64:32:32")) :
78 std::string("e-p:32:32-f64:64:64-i64:64:64-"
79 "i16:16:32-i8:8:32-i1:8:32-a:0:32") :
80 std::string("e-p:32:32-f64:64:64-i64:64:64"))),
86 unsigned ARMTargetMachine::getJITMatchQuality() {
93 unsigned ARMTargetMachine::getModuleMatchQuality(const Module &M) {
94 std::string TT = M.getTargetTriple();
95 if (TT.size() >= 4 && // Match arm-foo-bar, as well as things like armv5blah-*
96 (TT.substr(0, 4) == "arm-" || TT.substr(0, 4) == "armv"))
98 // If the target triple is something non-arm, we don't match.
99 if (!TT.empty()) return 0;
101 if (M.getEndianness() == Module::LittleEndian &&
102 M.getPointerSize() == Module::Pointer32)
103 return 10; // Weak match
104 else if (M.getEndianness() != Module::AnyEndianness ||
105 M.getPointerSize() != Module::AnyPointerSize)
106 return 0; // Match for some other target
108 return getJITMatchQuality()/2;
112 const TargetAsmInfo *ARMTargetMachine::createTargetAsmInfo() const {
113 return new ARMTargetAsmInfo(*this);
117 // Pass Pipeline Configuration
118 bool ARMTargetMachine::addInstSelector(PassManagerBase &PM, bool Fast) {
119 PM.add(createARMISelDag(*this));
123 bool ARMTargetMachine::addPreEmitPass(PassManagerBase &PM, bool Fast) {
124 // FIXME: temporarily disabling load / store optimization pass for Thumb mode.
125 if (!Fast && !DisableLdStOpti && !Subtarget.isThumb())
126 PM.add(createARMLoadStoreOptimizationPass());
128 if (!Fast && !DisableIfConversion && !Subtarget.isThumb())
129 PM.add(createIfConverterPass());
131 PM.add(createARMConstantIslandPass());
135 bool ARMTargetMachine::addAssemblyEmitter(PassManagerBase &PM, bool Fast,
137 // Output assembly language.
138 PM.add(createARMCodePrinterPass(Out, *this));
143 bool ARMTargetMachine::addCodeEmitter(PassManagerBase &PM, bool Fast,
144 bool DumpAsm, MachineCodeEmitter &MCE) {
145 // FIXME: Move this to TargetJITInfo!
146 setRelocationModel(Reloc::Static);
148 // Machine code emitter pass for ARM.
149 PM.add(createARMCodeEmitterPass(*this, MCE));
151 PM.add(createARMCodePrinterPass(*cerr.stream(), *this));
155 bool ARMTargetMachine::addSimpleCodeEmitter(PassManagerBase &PM, bool Fast,
156 bool DumpAsm, MachineCodeEmitter &MCE) {
157 // Machine code emitter pass for ARM.
158 PM.add(createARMCodeEmitterPass(*this, MCE));
160 PM.add(createARMCodePrinterPass(*cerr.stream(), *this));