1 //===-- XCoreTargetMachine.cpp - Define TargetMachine for XCore -----------===//
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 "XCoreTargetMachine.h"
14 #include "XCore.h"
15 #include "llvm/CodeGen/Passes.h"
16 #include "llvm/IR/Module.h"
17 #include "llvm/PassManager.h"
18 #include "llvm/Support/TargetRegistry.h"
19 using namespace llvm;
20 
21 /// XCoreTargetMachine ctor - Create an ILP32 architecture model
22 ///
23 XCoreTargetMachine::XCoreTargetMachine(const Target &T, StringRef TT,
24                                        StringRef CPU, StringRef FS,
25                                        const TargetOptions &Options,
26                                        Reloc::Model RM, CodeModel::Model CM,
27                                        CodeGenOpt::Level OL)
28   : LLVMTargetMachine(T, TT, CPU, FS, Options, RM, CM, OL),
29     Subtarget(TT, CPU, FS),
30     DL("e-m:e-p:32:32-i1:8:32-i8:8:32-i16:16:32-i64:32-f64:32-a:0:32-n32"),
31     InstrInfo(),
32     FrameLowering(Subtarget),
33     TLInfo(*this),
34     TSInfo(*this) {
35   initAsmInfo();
36 }
37 
38 namespace {
39 /// XCore Code Generator Pass Configuration Options.
40 class XCorePassConfig : public TargetPassConfig {
41 public:
42   XCorePassConfig(XCoreTargetMachine *TM, PassManagerBase &PM)
43     : TargetPassConfig(TM, PM) {}
44 
45   XCoreTargetMachine &getXCoreTargetMachine() const {
46     return getTM<XCoreTargetMachine>();
47   }
48 
49   virtual bool addPreISel();
50   virtual bool addInstSelector();
51   virtual bool addPreEmitPass();
52 };
53 } // namespace
54 
55 TargetPassConfig *XCoreTargetMachine::createPassConfig(PassManagerBase &PM) {
56   return new XCorePassConfig(this, PM);
57 }
58 
59 bool XCorePassConfig::addPreISel() {
60   addPass(createXCoreLowerThreadLocalPass());
61   return false;
62 }
63 
64 bool XCorePassConfig::addInstSelector() {
65   addPass(createXCoreISelDag(getXCoreTargetMachine(), getOptLevel()));
66   return false;
67 }
68 
69 bool XCorePassConfig::addPreEmitPass() {
70   addPass(createXCoreFrameToArgsOffsetEliminationPass());
71   return false;
72 }
73 
74 // Force static initialization.
75 extern "C" void LLVMInitializeXCoreTarget() {
76   RegisterTargetMachine<XCoreTargetMachine> X(TheXCoreTarget);
77 }
78 
79 void XCoreTargetMachine::addAnalysisPasses(PassManagerBase &PM) {
80   // Add first the target-independent BasicTTI pass, then our XCore pass. This
81   // allows the XCore pass to delegate to the target independent layer when
82   // appropriate.
83   PM.add(createBasicTargetTransformInfoPass(this));
84   PM.add(createXCoreTargetTransformInfoPass(this));
85 }
86