SparcTargetMachine.cpp revision be8cc2a3dedeb7685f07e68cdc4b9502eb97eb2b 
1//===-- SparcTargetMachine.cpp - Define TargetMachine for Sparc -----------===//
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//
11//===----------------------------------------------------------------------===//
12
13#include "SparcTargetAsmInfo.h"
14#include "SparcTargetMachine.h"
15#include "Sparc.h"
16#include "llvm/Module.h"
17#include "llvm/PassManager.h"
18#include "llvm/Target/TargetMachineRegistry.h"
19using namespace llvm;
20
21/// SparcTargetMachineModule - Note that this is used on hosts that
22/// cannot link in a library unless there are references into the
23/// library.  In particular, it seems that it is not possible to get
24/// things to work on Win32 without this.  Though it is unused, do not
25/// remove it.
26extern "C" int SparcTargetMachineModule;
27int SparcTargetMachineModule = 0;
28
29// Register the target.
30static RegisterTarget<SparcTargetMachine> X("sparc", "SPARC");
31
32const TargetAsmInfo *SparcTargetMachine::createTargetAsmInfo() const {
33  // FIXME: Handle Solaris subtarget someday :)
34  return new SparcELFTargetAsmInfo(*this);
35}
36
37/// SparcTargetMachine ctor - Create an ILP32 architecture model
38///
39SparcTargetMachine::SparcTargetMachine(const Module &M, const std::string &FS)
40  : DataLayout("E-p:32:32-f128:128:128"),
41    Subtarget(M, FS), TLInfo(*this), InstrInfo(Subtarget),
42    FrameInfo(TargetFrameInfo::StackGrowsDown, 8, 0) {
43}
44
45unsigned SparcTargetMachine::getModuleMatchQuality(const Module &M) {
46  std::string TT = M.getTargetTriple();
47  if (TT.size() >= 6 && std::string(TT.begin(), TT.begin()+6) == "sparc-")
48    return 20;
49
50  // If the target triple is something non-sparc, we don't match.
51  if (!TT.empty()) return 0;
52
53  if (M.getEndianness()  == Module::BigEndian &&
54      M.getPointerSize() == Module::Pointer32)
55#ifdef __sparc__
56    return 20;   // BE/32 ==> Prefer sparc on sparc
57#else
58    return 5;    // BE/32 ==> Prefer ppc elsewhere
59#endif
60  else if (M.getEndianness() != Module::AnyEndianness ||
61           M.getPointerSize() != Module::AnyPointerSize)
62    return 0;                                    // Match for some other target
63
64#if defined(__sparc__)
65  return 10;
66#else
67  return 0;
68#endif
69}
70
71bool SparcTargetMachine::addInstSelector(PassManagerBase &PM,
72                                         unsigned OptLevel) {
73  PM.add(createSparcISelDag(*this));
74  return false;
75}
76
77/// addPreEmitPass - This pass may be implemented by targets that want to run
78/// passes immediately before machine code is emitted.  This should return
79/// true if -print-machineinstrs should print out the code after the passes.
80bool SparcTargetMachine::addPreEmitPass(PassManagerBase &PM, unsigned OptLevel){
81  PM.add(createSparcFPMoverPass(*this));
82  PM.add(createSparcDelaySlotFillerPass(*this));
83  return true;
84}
85
86bool SparcTargetMachine::addAssemblyEmitter(PassManagerBase &PM,
87                                            unsigned OptLevel,
88                                            bool Verbose,
89                                            raw_ostream &Out) {
90  // Output assembly language.
91  PM.add(createSparcCodePrinterPass(Out, *this, OptLevel, Verbose));
92  return false;
93}
94