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 "ARMMCAsmInfo.h"
15 #include "ARMFrameInfo.h"
17 #include "llvm/PassManager.h"
18 #include "llvm/CodeGen/Passes.h"
19 #include "llvm/Support/FormattedStream.h"
20 #include "llvm/Target/TargetOptions.h"
21 #include "llvm/Target/TargetRegistry.h"
24 static MCAsmInfo *createMCAsmInfo(const Target &T, StringRef TT) {
26 switch (TheTriple.getOS()) {
28 return new ARMMCAsmInfoDarwin();
30 return new ARMELFMCAsmInfo();
35 extern "C" void LLVMInitializeARMTarget() {
36 // Register the target.
37 RegisterTargetMachine<ARMTargetMachine> X(TheARMTarget);
38 RegisterTargetMachine<ThumbTargetMachine> Y(TheThumbTarget);
40 // Register the target asm info.
41 RegisterAsmInfoFn A(TheARMTarget, createMCAsmInfo);
42 RegisterAsmInfoFn B(TheThumbTarget, createMCAsmInfo);
45 /// TargetMachine ctor - Create an ARM architecture model.
47 ARMBaseTargetMachine::ARMBaseTargetMachine(const Target &T,
48 const std::string &TT,
49 const std::string &FS,
51 : LLVMTargetMachine(T, TT),
52 Subtarget(TT, FS, isThumb),
55 InstrItins(Subtarget.getInstrItineraryData()) {
56 DefRelocModel = getRelocationModel();
59 ARMTargetMachine::ARMTargetMachine(const Target &T, const std::string &TT,
60 const std::string &FS)
61 : ARMBaseTargetMachine(T, TT, FS, false), InstrInfo(Subtarget),
62 DataLayout(Subtarget.isAPCS_ABI() ?
63 std::string("e-p:32:32-f64:32:32-i64:32:32-n32") :
64 std::string("e-p:32:32-f64:64:64-i64:64:64-n32")),
69 ThumbTargetMachine::ThumbTargetMachine(const Target &T, const std::string &TT,
70 const std::string &FS)
71 : ARMBaseTargetMachine(T, TT, FS, true),
72 InstrInfo(Subtarget.hasThumb2()
73 ? ((ARMBaseInstrInfo*)new Thumb2InstrInfo(Subtarget))
74 : ((ARMBaseInstrInfo*)new Thumb1InstrInfo(Subtarget))),
75 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-n32") :
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-n32")),
86 // Pass Pipeline Configuration
87 bool ARMBaseTargetMachine::addInstSelector(PassManagerBase &PM,
88 CodeGenOpt::Level OptLevel) {
89 PM.add(createARMISelDag(*this, OptLevel));
93 bool ARMBaseTargetMachine::addPreRegAlloc(PassManagerBase &PM,
94 CodeGenOpt::Level OptLevel) {
95 if (Subtarget.hasNEON())
96 PM.add(createNEONPreAllocPass());
98 // FIXME: temporarily disabling load / store optimization pass for Thumb1.
99 if (OptLevel != CodeGenOpt::None && !Subtarget.isThumb1Only())
100 PM.add(createARMLoadStoreOptimizationPass(true));
104 bool ARMBaseTargetMachine::addPreSched2(PassManagerBase &PM,
105 CodeGenOpt::Level OptLevel) {
106 // FIXME: temporarily disabling load / store optimization pass for Thumb1.
107 if (OptLevel != CodeGenOpt::None) {
108 if (!Subtarget.isThumb1Only())
109 PM.add(createARMLoadStoreOptimizationPass());
110 if (Subtarget.hasNEON())
111 PM.add(createNEONMoveFixPass());
114 // Expand some pseudo instructions into multiple instructions to allow
115 // proper scheduling.
116 PM.add(createARMExpandPseudoPass());
121 bool ARMBaseTargetMachine::addPreEmitPass(PassManagerBase &PM,
122 CodeGenOpt::Level OptLevel) {
123 // FIXME: temporarily disabling load / store optimization pass for Thumb1.
124 if (OptLevel != CodeGenOpt::None) {
125 if (!Subtarget.isThumb1Only())
126 PM.add(createIfConverterPass());
129 if (Subtarget.isThumb2()) {
130 PM.add(createThumb2ITBlockPass());
131 PM.add(createThumb2SizeReductionPass());
134 PM.add(createARMConstantIslandPass());
138 bool ARMBaseTargetMachine::addCodeEmitter(PassManagerBase &PM,
139 CodeGenOpt::Level OptLevel,
140 JITCodeEmitter &JCE) {
141 // FIXME: Move this to TargetJITInfo!
142 if (DefRelocModel == Reloc::Default)
143 setRelocationModel(Reloc::Static);
145 // Machine code emitter pass for ARM.
146 PM.add(createARMJITCodeEmitterPass(*this, JCE));