SparcTargetMachine.cpp revision ce8eb0c16b7197eaa886f90c1ef9ab9bbf1957c4 
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                                           const std::string &FS)
36  : TargetMachine("SparcV8", IL, false, 4, 4),
37    FrameInfo(TargetFrameInfo::StackGrowsDown, 8, 0), JITInfo(*this) {
38}
39
40unsigned SparcV8TargetMachine::getJITMatchQuality() {
41  return 0; // No JIT yet.
42}
43
44unsigned SparcV8TargetMachine::getModuleMatchQuality(const Module &M) {
45  std::string TT = M.getTargetTriple();
46  if (TT.size() >= 6 && std::string(TT.begin(), TT.begin()+6) == "sparc-")
47    return 20;
48
49  if (M.getEndianness()  == Module::BigEndian &&
50      M.getPointerSize() == Module::Pointer32)
51#ifdef __sparc__
52    return 20;   // BE/32 ==> Prefer sparcv8 on sparc
53#else
54    return 5;    // BE/32 ==> Prefer ppc elsewhere
55#endif
56  else if (M.getEndianness() != Module::AnyEndianness ||
57           M.getPointerSize() != Module::AnyPointerSize)
58    return 0;                                    // Match for some other target
59
60  return getJITMatchQuality()/2;
61}
62
63/// addPassesToEmitFile - Add passes to the specified pass manager
64/// to implement a static compiler for this target.
65///
66bool SparcV8TargetMachine::addPassesToEmitFile(PassManager &PM,
67                                               std::ostream &Out,
68                                               CodeGenFileType FileType,
69                                               bool Fast) {
70  if (FileType != TargetMachine::AssemblyFile) return true;
71
72  // FIXME: Implement efficient support for garbage collection intrinsics.
73  PM.add(createLowerGCPass());
74
75  // Replace malloc and free instructions with library calls.
76  PM.add(createLowerAllocationsPass());
77
78  // FIXME: implement the switch instruction in the instruction selector.
79  PM.add(createLowerSwitchPass());
80
81  // FIXME: implement the invoke/unwind instructions!
82  PM.add(createLowerInvokePass());
83
84  // Make sure that no unreachable blocks are instruction selected.
85  PM.add(createUnreachableBlockEliminationPass());
86
87  // FIXME: implement the select instruction in the instruction selector.
88  PM.add(createLowerSelectPass());
89
90  // Print LLVM code input to instruction selector:
91  if (PrintMachineCode)
92    PM.add(new PrintFunctionPass());
93
94  PM.add(createSparcV8SimpleInstructionSelector(*this));
95
96  // Print machine instructions as they were initially generated.
97  if (PrintMachineCode)
98    PM.add(createMachineFunctionPrinterPass(&std::cerr));
99
100  PM.add(createRegisterAllocator());
101  PM.add(createPrologEpilogCodeInserter());
102
103  // Print machine instructions after register allocation and prolog/epilog
104  // insertion.
105  if (PrintMachineCode)
106    PM.add(createMachineFunctionPrinterPass(&std::cerr));
107
108  PM.add(createSparcV8FPMoverPass(*this));
109  PM.add(createSparcV8DelaySlotFillerPass(*this));
110
111  // Print machine instructions after filling delay slots.
112  if (PrintMachineCode)
113    PM.add(createMachineFunctionPrinterPass(&std::cerr));
114
115  // Output assembly language.
116  PM.add(createSparcV8CodePrinterPass(Out, *this));
117
118  // Delete the MachineInstrs we generated, since they're no longer needed.
119  PM.add(createMachineCodeDeleter());
120  return false;
121}
122
123/// addPassesToJITCompile - Add passes to the specified pass manager to
124/// implement a fast dynamic compiler for this target.
125///
126void SparcV8JITInfo::addPassesToJITCompile(FunctionPassManager &PM) {
127  // FIXME: Implement efficient support for garbage collection intrinsics.
128  PM.add(createLowerGCPass());
129
130  // Replace malloc and free instructions with library calls.
131  PM.add(createLowerAllocationsPass());
132
133  // FIXME: implement the switch instruction in the instruction selector.
134  PM.add(createLowerSwitchPass());
135
136  // FIXME: implement the invoke/unwind instructions!
137  PM.add(createLowerInvokePass());
138
139  // Make sure that no unreachable blocks are instruction selected.
140  PM.add(createUnreachableBlockEliminationPass());
141
142  // FIXME: implement the select instruction in the instruction selector.
143  PM.add(createLowerSelectPass());
144
145  // Print LLVM code input to instruction selector:
146  if (PrintMachineCode)
147    PM.add(new PrintFunctionPass());
148
149  PM.add(createSparcV8SimpleInstructionSelector(TM));
150
151  // Print machine instructions as they were initially generated.
152  if (PrintMachineCode)
153    PM.add(createMachineFunctionPrinterPass(&std::cerr));
154
155  PM.add(createRegisterAllocator());
156  PM.add(createPrologEpilogCodeInserter());
157
158  // Print machine instructions after register allocation and prolog/epilog
159  // insertion.
160  if (PrintMachineCode)
161    PM.add(createMachineFunctionPrinterPass(&std::cerr));
162
163  PM.add(createSparcV8FPMoverPass(TM));
164  PM.add(createSparcV8DelaySlotFillerPass(TM));
165
166  // Print machine instructions after filling delay slots.
167  if (PrintMachineCode)
168    PM.add(createMachineFunctionPrinterPass(&std::cerr));
169}
170