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"
19 using namespace llvm;
20 
21 extern Target TheSystemZTarget;
22 namespace {
23   // Register the target.
24   RegisterTarget<SystemZTargetMachine> X(TheSystemZTarget,
25                                          "systemz",
26                                          "SystemZ [experimental]");
27 }
28 
29 // Force static initialization.
30 extern "C" void LLVMInitializeSystemZTarget() {
31 
32 }
33 
34 const TargetAsmInfo *SystemZTargetMachine::createTargetAsmInfo() const {
35   // FIXME: Handle Solaris subtarget someday :)
36   return new SystemZTargetAsmInfo(*this);
37 }
38 
39 /// SystemZTargetMachine ctor - Create an ILP64 architecture model
40 ///
41 SystemZTargetMachine::SystemZTargetMachine(const Target &T,
42                                            const Module &M,
43                                            const std::string &FS)
44   : LLVMTargetMachine(T),
45     Subtarget(*this, M, FS),
46     DataLayout("E-p:64:64:64-i8:8:16-i16:16:16-i32:32:32-i64:64:64-f32:32:32"
47                "-f64:64:64-f128:128:128-a0:16:16"),
48     InstrInfo(*this), TLInfo(*this),
49     FrameInfo(TargetFrameInfo::StackGrowsDown, 8, -160) {
50 
51   if (getRelocationModel() == Reloc::Default)
52     setRelocationModel(Reloc::Static);
53 }
54 
55 bool SystemZTargetMachine::addInstSelector(PassManagerBase &PM,
56                                           CodeGenOpt::Level OptLevel) {
57   // Install an instruction selector.
58   PM.add(createSystemZISelDag(*this, OptLevel));
59   return false;
60 }
61 
62 unsigned SystemZTargetMachine::getModuleMatchQuality(const Module &M) {
63   std::string TT = M.getTargetTriple();
64 
65   // We strongly match s390x
66   if (TT.size() >= 5 && TT[0] == 's' && TT[1] == '3' && TT[2] == '9' &&
67       TT[3] == '0' &&  TT[4] == 'x')
68     return 20;
69 
70   return 0;
71 }
72