SystemZTargetMachine.cpp revision 51f613fb2b177a19fcc92c38cc58c99de4c330b0 
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/TargetMachineRegistry.h"
19using namespace llvm;
20
21/// SystemZTargetMachineModule - 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 SystemZTargetMachineModule;
27int SystemZTargetMachineModule = 0;
28
29// Register the target.
30static RegisterTarget<SystemZTargetMachine>
31X("systemz", "SystemZ [experimental]");
32
33const TargetAsmInfo *SystemZTargetMachine::createTargetAsmInfo() const {
34  // FIXME: Handle Solaris subtarget someday :)
35  return new SystemZTargetAsmInfo(*this);
36}
37
38/// SystemZTargetMachine ctor - Create an ILP64 architecture model
39///
40SystemZTargetMachine::SystemZTargetMachine(const Module &M, const std::string &FS)
41  : Subtarget(*this, M, FS),
42    DataLayout("E-p:64:64:64-i1:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-f128:128:128"),
43    InstrInfo(*this), TLInfo(*this),
44    FrameInfo(TargetFrameInfo::StackGrowsDown, 8, -160) {
45}
46
47bool SystemZTargetMachine::addInstSelector(PassManagerBase &PM,
48                                          CodeGenOpt::Level OptLevel) {
49  // Install an instruction selector.
50  PM.add(createSystemZISelDag(*this, OptLevel));
51  return false;
52}
53
54bool SystemZTargetMachine::addAssemblyEmitter(PassManagerBase &PM,
55                                             CodeGenOpt::Level OptLevel,
56                                             bool Verbose,
57                                             raw_ostream &Out) {
58  // Output assembly language.
59  PM.add(createSystemZCodePrinterPass(Out, *this, OptLevel, Verbose));
60  return false;
61}
62
63unsigned SystemZTargetMachine::getModuleMatchQuality(const Module &M) {
64  std::string TT = M.getTargetTriple();
65
66  // We strongly match s390x
67  if (TT.size() >= 5 && TT[0] == 's' && TT[1] == '3' && TT[2] == '9' &&
68      TT[3] == '0' &&  TT[4] == 'x')
69    return 20;
70
71  return 0;
72}
73