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, *this) {
30   initAsmInfo();
31 }
32 
33 namespace {
34 /// XCore Code Generator Pass Configuration Options.
35 class XCorePassConfig : public TargetPassConfig {
36 public:
37   XCorePassConfig(XCoreTargetMachine *TM, PassManagerBase &PM)
38     : TargetPassConfig(TM, PM) {}
39 
40   XCoreTargetMachine &getXCoreTargetMachine() const {
41     return getTM<XCoreTargetMachine>();
42   }
43 
44   void addIRPasses() override;
45   bool addPreISel() override;
46   bool addInstSelector() override;
47   bool addPreEmitPass() override;
48 };
49 } // namespace
50 
51 TargetPassConfig *XCoreTargetMachine::createPassConfig(PassManagerBase &PM) {
52   return new XCorePassConfig(this, PM);
53 }
54 
55 void XCorePassConfig::addIRPasses() {
56   addPass(createAtomicExpandPass(&getXCoreTargetMachine()));
57 
58   TargetPassConfig::addIRPasses();
59 }
60 
61 bool XCorePassConfig::addPreISel() {
62   addPass(createXCoreLowerThreadLocalPass());
63   return false;
64 }
65 
66 bool XCorePassConfig::addInstSelector() {
67   addPass(createXCoreISelDag(getXCoreTargetMachine(), getOptLevel()));
68   return false;
69 }
70 
71 bool XCorePassConfig::addPreEmitPass() {
72   addPass(createXCoreFrameToArgsOffsetEliminationPass());
73   return false;
74 }
75 
76 // Force static initialization.
77 extern "C" void LLVMInitializeXCoreTarget() {
78   RegisterTargetMachine<XCoreTargetMachine> X(TheXCoreTarget);
79 }
80 
81 void XCoreTargetMachine::addAnalysisPasses(PassManagerBase &PM) {
82   // Add first the target-independent BasicTTI pass, then our XCore pass. This
83   // allows the XCore pass to delegate to the target independent layer when
84   // appropriate.
85   PM.add(createBasicTargetTransformInfoPass(this));
86   PM.add(createXCoreTargetTransformInfoPass(this));
87 }
88