SparcTargetInfo.cpp revision 4cb1e13769856716261a4d315f8202bd918502c3 
1//===-- SparcTargetInfo.cpp - Sparc Target Implementation -----------------===//
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#include "Sparc.h"
11#include "llvm/Module.h"
12#include "llvm/Target/TargetRegistry.h"
13using namespace llvm;
14
15Target llvm::TheSparcTarget;
16
17static unsigned Sparc_JITMatchQuality() {
18  return 0;
19}
20
21static unsigned Sparc_TripleMatchQuality(const std::string &TT) {
22  if (TT.size() >= 6 && std::string(TT.begin(), TT.begin()+6) == "sparc-")
23    return 20;
24
25  return 0;
26}
27
28static unsigned Sparc_ModuleMatchQuality(const Module &M) {
29  // Check for a triple match.
30  if (unsigned Q = Sparc_TripleMatchQuality(M.getTargetTriple()))
31    return Q;
32
33  // Otherwise if the target triple is non-empty, we don't match.
34  if (!M.getTargetTriple().empty()) return 0;
35
36  // FIXME: This is bad, the target matching algorithm shouldn't depend on the
37  // host.
38  if (M.getEndianness()  == Module::BigEndian &&
39      M.getPointerSize() == Module::Pointer32)
40#ifdef __sparc__
41    return 20;   // BE/32 ==> Prefer sparc on sparc
42#else
43    return 5;    // BE/32 ==> Prefer ppc elsewhere
44#endif
45  else if (M.getEndianness() != Module::AnyEndianness ||
46           M.getPointerSize() != Module::AnyPointerSize)
47    return 0;                                    // Match for some other target
48
49#if defined(__sparc__)
50  return 10;
51#else
52  return 0;
53#endif
54}
55
56extern "C" void LLVMInitializeSparcTargetInfo() {
57  TargetRegistry::RegisterTarget(TheSparcTarget, "sparc",
58                                  "Sparc",
59                                  &Sparc_TripleMatchQuality,
60                                  &Sparc_ModuleMatchQuality,
61                                  &Sparc_JITMatchQuality);
62}
63