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