SystemZTargetMachine.cpp revision e6483e3097a6ed11e4b406536b6c977c42b5f69b 
1//===-- SystemZTargetMachine.cpp - Define TargetMachine for SystemZ -------===//
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 "SystemZTargetAsmInfo.h"
14#include "SystemZTargetMachine.h"
15#include "SystemZ.h"
16#include "llvm/Module.h"
17#include "llvm/PassManager.h"
18#include "llvm/Target/TargetRegistry.h"
19using namespace llvm;
20
21extern "C" void LLVMInitializeSystemZTarget() {
22  // Register the target.
23  RegisterTargetMachine<SystemZTargetMachine> X(TheSystemZTarget);
24}
25
26const TargetAsmInfo *SystemZTargetMachine::createTargetAsmInfo() const {
27  return new SystemZTargetAsmInfo();
28}
29
30/// SystemZTargetMachine ctor - Create an ILP64 architecture model
31///
32SystemZTargetMachine::SystemZTargetMachine(const Target &T,
33                                           const Module &M,
34                                           const std::string &FS)
35  : LLVMTargetMachine(T),
36    Subtarget(*this, M, FS),
37    DataLayout("E-p:64:64:64-i8:8:16-i16:16:16-i32:32:32-i64:64:64-f32:32:32"
38               "-f64:64:64-f128:128:128-a0:16:16"),
39    InstrInfo(*this), TLInfo(*this),
40    FrameInfo(TargetFrameInfo::StackGrowsDown, 8, -160) {
41
42  if (getRelocationModel() == Reloc::Default)
43    setRelocationModel(Reloc::Static);
44}
45
46bool SystemZTargetMachine::addInstSelector(PassManagerBase &PM,
47                                          CodeGenOpt::Level OptLevel) {
48  // Install an instruction selector.
49  PM.add(createSystemZISelDag(*this, OptLevel));
50  return false;
51}
52
53unsigned SystemZTargetMachine::getModuleMatchQuality(const Module &M) {
54  std::string TT = M.getTargetTriple();
55
56  // We strongly match s390x
57  if (TT.size() >= 5 && TT[0] == 's' && TT[1] == '3' && TT[2] == '9' &&
58      TT[3] == '0' &&  TT[4] == 'x')
59    return 20;
60
61  return 0;
62}
63