Introduce new headers whose inclusion forces linking and
[oota-llvm.git] / lib / Target / IA64 / IA64TargetMachine.cpp
1 //===-- IA64TargetMachine.cpp - Define TargetMachine for IA64 -------------===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 //
10 // This file implements the IA64 specific subclass of TargetMachine.
11 //
12 //===----------------------------------------------------------------------===//
13
14 #include "IA64TargetAsmInfo.h"
15 #include "IA64TargetMachine.h"
16 #include "IA64.h"
17 #include "llvm/Module.h"
18 #include "llvm/PassManager.h"
19 #include "llvm/Target/TargetMachineRegistry.h"
20 using namespace llvm;
21
22 /// IA64TargetMachineModule - Note that this is used on hosts that cannot link
23 /// in a library unless there are references into the library.  In particular,
24 /// it seems that it is not possible to get things to work on Win32 without
25 /// this.  Though it is unused, do not remove it.
26 extern "C" int IA64TargetMachineModule;
27 int IA64TargetMachineModule = 0;
28
29 static RegisterTarget<IA64TargetMachine> X("ia64", 
30                                            "IA-64 (Itanium) [experimental]");
31
32 // Force static initialization when called from llvm/InitializeAllTargets.h
33 namespace llvm {
34   void InitializeIA64Target() { }
35 }
36
37 const TargetAsmInfo *IA64TargetMachine::createTargetAsmInfo() const {
38   return new IA64TargetAsmInfo(*this);
39 }
40
41 unsigned IA64TargetMachine::getModuleMatchQuality(const Module &M) {
42   // we match [iI][aA]*64
43   bool seenIA64=false;
44   std::string TT = M.getTargetTriple();
45
46   if (TT.size() >= 4) {
47     if( (TT[0]=='i' || TT[0]=='I') &&
48         (TT[1]=='a' || TT[1]=='A') ) {
49       for(unsigned int i=2; i<(TT.size()-1); i++)
50         if(TT[i]=='6' && TT[i+1]=='4')
51           seenIA64=true;
52     }
53
54     if (seenIA64)
55       return 20; // strong match
56   }
57   // If the target triple is something non-ia64, we don't match.
58   if (!TT.empty()) return 0;
59
60 #if defined(__ia64__) || defined(__IA64__)
61   return 5;
62 #else
63   return 0;
64 #endif
65 }
66
67 /// IA64TargetMachine ctor - Create an LP64 architecture model
68 ///
69 IA64TargetMachine::IA64TargetMachine(const Module &M, const std::string &FS)
70   : DataLayout("e-f80:128:128"),
71     FrameInfo(TargetFrameInfo::StackGrowsDown, 16, 0),
72     TLInfo(*this) { // FIXME? check this stuff
73 }
74
75
76 //===----------------------------------------------------------------------===//
77 // Pass Pipeline Configuration
78 //===----------------------------------------------------------------------===//
79
80 bool IA64TargetMachine::addInstSelector(PassManagerBase &PM,
81                                         CodeGenOpt::Level OptLevel){
82   PM.add(createIA64DAGToDAGInstructionSelector(*this));
83   return false;
84 }
85
86 bool IA64TargetMachine::addPreEmitPass(PassManagerBase &PM,
87                                        CodeGenOpt::Level OptLevel) {
88   // Make sure everything is bundled happily
89   PM.add(createIA64BundlingPass(*this));
90   return true;
91 }
92 bool IA64TargetMachine::addAssemblyEmitter(PassManagerBase &PM,
93                                            CodeGenOpt::Level OptLevel,
94                                            bool Verbose,
95                                            raw_ostream &Out) {
96   PM.add(createIA64CodePrinterPass(Out, *this, OptLevel, Verbose));
97   return false;
98 }
99