SparcTargetMachine.cpp revision b5f662fa0314f7e7e690aae8ebff7136cc3a5ab0 
1//===-- SparcV8TargetMachine.cpp - Define TargetMachine for SparcV8 -------===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file was developed by the LLVM research group and is distributed under
6// the University of Illinois Open Source License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9//
10//
11//===----------------------------------------------------------------------===//
12
13#include "SparcV8TargetMachine.h"
14#include "SparcV8.h"
15#include "llvm/Assembly/PrintModulePass.h"
16#include "llvm/Module.h"
17#include "llvm/PassManager.h"
18#include "llvm/CodeGen/MachineFunction.h"
19#include "llvm/CodeGen/Passes.h"
20#include "llvm/Target/TargetOptions.h"
21#include "llvm/Target/TargetMachineRegistry.h"
22#include "llvm/Transforms/Scalar.h"
23#include <iostream>
24using namespace llvm;
25
26namespace {
27  // Register the target.
28  RegisterTarget<SparcV8TargetMachine> X("sparcv8","  SPARC V8 (experimental)");
29}
30
31/// SparcV8TargetMachine ctor - Create an ILP32 architecture model
32///
33SparcV8TargetMachine::SparcV8TargetMachine(const Module &M,
34                                           IntrinsicLowering *IL)
35  : TargetMachine("SparcV8", IL, false, 4, 4),
36    FrameInfo(TargetFrameInfo::StackGrowsDown, 8, 0), JITInfo(*this) {
37}
38
39unsigned SparcV8TargetMachine::getJITMatchQuality() {
40  return 0; // No JIT yet.
41}
42
43unsigned SparcV8TargetMachine::getModuleMatchQuality(const Module &M) {
44  std::string TT = M.getTargetTriple();
45  if (TT.size() >= 6 && std::string(TT.begin(), TT.begin()+6) == "sparc-")
46    return 20;
47
48  if (M.getEndianness()  == Module::BigEndian &&
49      M.getPointerSize() == Module::Pointer32)
50#ifdef __sparc__
51    return 20;   // BE/32 ==> Prefer sparcv8 on sparc
52#else
53    return 5;    // BE/32 ==> Prefer ppc elsewhere
54#endif
55  else if (M.getEndianness() != Module::AnyEndianness ||
56           M.getPointerSize() != Module::AnyPointerSize)
57    return 0;                                    // Match for some other target
58
59  return getJITMatchQuality()/2;
60}
61
62/// addPassesToEmitAssembly - Add passes to the specified pass manager
63/// to implement a static compiler for this target.
64///
65bool SparcV8TargetMachine::addPassesToEmitAssembly(PassManager &PM,
66					       std::ostream &Out) {
67  // FIXME: Implement efficient support for garbage collection intrinsics.
68  PM.add(createLowerGCPass());
69
70  // Replace malloc and free instructions with library calls.
71  PM.add(createLowerAllocationsPass());
72
73  // FIXME: implement the switch instruction in the instruction selector.
74  PM.add(createLowerSwitchPass());
75
76  // FIXME: implement the invoke/unwind instructions!
77  PM.add(createLowerInvokePass());
78
79  PM.add(createLowerConstantExpressionsPass());
80
81  // Make sure that no unreachable blocks are instruction selected.
82  PM.add(createUnreachableBlockEliminationPass());
83
84  // FIXME: implement the select instruction in the instruction selector.
85  PM.add(createLowerSelectPass());
86
87  // Print LLVM code input to instruction selector:
88  if (PrintMachineCode)
89    PM.add(new PrintFunctionPass());
90
91  PM.add(createSparcV8SimpleInstructionSelector(*this));
92
93  // Print machine instructions as they were initially generated.
94  if (PrintMachineCode)
95    PM.add(createMachineFunctionPrinterPass(&std::cerr));
96
97  PM.add(createRegisterAllocator());
98  PM.add(createPrologEpilogCodeInserter());
99
100  // Print machine instructions after register allocation and prolog/epilog
101  // insertion.
102  if (PrintMachineCode)
103    PM.add(createMachineFunctionPrinterPass(&std::cerr));
104
105  PM.add(createSparcV8FPMoverPass(*this));
106  PM.add(createSparcV8DelaySlotFillerPass(*this));
107
108  // Print machine instructions after filling delay slots.
109  if (PrintMachineCode)
110    PM.add(createMachineFunctionPrinterPass(&std::cerr));
111
112  // Output assembly language.
113  PM.add(createSparcV8CodePrinterPass(Out, *this));
114
115  // Delete the MachineInstrs we generated, since they're no longer needed.
116  PM.add(createMachineCodeDeleter());
117  return false;
118}
119
120/// addPassesToJITCompile - Add passes to the specified pass manager to
121/// implement a fast dynamic compiler for this target.
122///
123void SparcV8JITInfo::addPassesToJITCompile(FunctionPassManager &PM) {
124  // FIXME: Implement efficient support for garbage collection intrinsics.
125  PM.add(createLowerGCPass());
126
127  // Replace malloc and free instructions with library calls.
128  PM.add(createLowerAllocationsPass());
129
130  // FIXME: implement the switch instruction in the instruction selector.
131  PM.add(createLowerSwitchPass());
132
133  // FIXME: implement the invoke/unwind instructions!
134  PM.add(createLowerInvokePass());
135
136  PM.add(createLowerConstantExpressionsPass());
137
138  // Make sure that no unreachable blocks are instruction selected.
139  PM.add(createUnreachableBlockEliminationPass());
140
141  // FIXME: implement the select instruction in the instruction selector.
142  PM.add(createLowerSelectPass());
143
144  // Print LLVM code input to instruction selector:
145  if (PrintMachineCode)
146    PM.add(new PrintFunctionPass());
147
148  PM.add(createSparcV8SimpleInstructionSelector(TM));
149
150  // Print machine instructions as they were initially generated.
151  if (PrintMachineCode)
152    PM.add(createMachineFunctionPrinterPass(&std::cerr));
153
154  PM.add(createRegisterAllocator());
155  PM.add(createPrologEpilogCodeInserter());
156
157  // Print machine instructions after register allocation and prolog/epilog
158  // insertion.
159  if (PrintMachineCode)
160    PM.add(createMachineFunctionPrinterPass(&std::cerr));
161
162  PM.add(createSparcV8FPMoverPass(TM));
163  PM.add(createSparcV8DelaySlotFillerPass(TM));
164
165  // Print machine instructions after filling delay slots.
166  if (PrintMachineCode)
167    PM.add(createMachineFunctionPrinterPass(&std::cerr));
168}
169