1 //===-- ARMTargetMachine.cpp - Define TargetMachine for ARM ---------------===//
3 // The LLVM Compiler Infrastructure
5 // This file was developed by the "Instituto Nokia de Tecnologia" and
6 // is distributed under the University of Illinois Open Source
7 // License. See LICENSE.TXT for details.
9 //===----------------------------------------------------------------------===//
12 //===----------------------------------------------------------------------===//
14 #include "ARMTargetMachine.h"
15 #include "ARMTargetAsmInfo.h"
16 #include "ARMFrameInfo.h"
18 #include "llvm/Module.h"
19 #include "llvm/PassManager.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"));
29 // Register the target.
30 RegisterTarget<ARMTargetMachine> X("arm", " ARM");
31 RegisterTarget<ThumbTargetMachine> Y("thumb", " Thumb");
34 /// ThumbTargetMachine - Create an Thumb architecture model.
36 unsigned ThumbTargetMachine::getModuleMatchQuality(const Module &M) {
37 std::string TT = M.getTargetTriple();
38 if (TT.size() >= 6 && std::string(TT.begin(), TT.begin()+6) == "thumb-")
41 return M.getPointerSize() == Module::Pointer32;
44 ThumbTargetMachine::ThumbTargetMachine(const Module &M, const std::string &FS)
45 : ARMTargetMachine(M, FS, true) {
48 /// TargetMachine ctor - Create an ARM architecture model.
50 ARMTargetMachine::ARMTargetMachine(const Module &M, const std::string &FS,
52 : Subtarget(M, FS, isThumb),
53 DataLayout(Subtarget.isAPCS_ABI() ?
56 std::string("e-p:32:32-f64:32:32-i64:32:32-"
57 "i16:16:32-i8:8:32-i1:8:32-a:0:32") :
58 std::string("e-p:32:32-f64:32:32-i64:32:32")) :
61 std::string("e-p:32:32-f64:64:64-i64:64:64-"
62 "i16:16:32-i8:8:32-i1:8:32-a:0:32") :
63 std::string("e-p:32:32-f64:64:64-i64:64:64"))),
68 unsigned ARMTargetMachine::getModuleMatchQuality(const Module &M) {
69 std::string TT = M.getTargetTriple();
70 if (TT.size() >= 4 && std::string(TT.begin(), TT.begin()+4) == "arm-")
73 return M.getPointerSize() == Module::Pointer32;
77 const TargetAsmInfo *ARMTargetMachine::createTargetAsmInfo() const {
78 return new ARMTargetAsmInfo(*this);
82 // Pass Pipeline Configuration
83 bool ARMTargetMachine::addInstSelector(FunctionPassManager &PM, bool Fast) {
84 PM.add(createARMISelDag(*this));
88 bool ARMTargetMachine::addPreEmitPass(FunctionPassManager &PM, bool Fast) {
89 // FIXME: temporarily disabling load / store optimization pass for Thumb mode.
90 if (!Fast && !DisableLdStOpti && !Subtarget.isThumb())
91 PM.add(createARMLoadStoreOptimizationPass());
93 PM.add(createARMConstantIslandPass());
97 bool ARMTargetMachine::addAssemblyEmitter(FunctionPassManager &PM, bool Fast,
99 // Output assembly language.
100 PM.add(createARMCodePrinterPass(Out, *this));