SparcTargetMachine.cpp revision 72fe0af68fd6cd0d38f1a8710f0f6768c0684b60 
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  if (FileType != TargetMachine::AssemblyFile) return true;
70
71  // FIXME: Implement efficient support for garbage collection intrinsics.
72  PM.add(createLowerGCPass());
73
74  // Replace malloc and free instructions with library calls.
75  PM.add(createLowerAllocationsPass());
76
77  // FIXME: implement the switch instruction in the instruction selector.
78  PM.add(createLowerSwitchPass());
79
80  // FIXME: implement the invoke/unwind instructions!
81  PM.add(createLowerInvokePass());
82
83  // Make sure that no unreachable blocks are instruction selected.
84  PM.add(createUnreachableBlockEliminationPass());
85
86  // FIXME: implement the select instruction in the instruction selector.
87  PM.add(createLowerSelectPass());
88
89  // Print LLVM code input to instruction selector:
90  if (PrintMachineCode)
91    PM.add(new PrintFunctionPass());
92
93  PM.add(createSparcV8SimpleInstructionSelector(*this));
94
95  // Print machine instructions as they were initially generated.
96  if (PrintMachineCode)
97    PM.add(createMachineFunctionPrinterPass(&std::cerr));
98
99  PM.add(createRegisterAllocator());
100  PM.add(createPrologEpilogCodeInserter());
101
102  // Print machine instructions after register allocation and prolog/epilog
103  // insertion.
104  if (PrintMachineCode)
105    PM.add(createMachineFunctionPrinterPass(&std::cerr));
106
107  PM.add(createSparcV8FPMoverPass(*this));
108  PM.add(createSparcV8DelaySlotFillerPass(*this));
109
110  // Print machine instructions after filling delay slots.
111  if (PrintMachineCode)
112    PM.add(createMachineFunctionPrinterPass(&std::cerr));
113
114  // Output assembly language.
115  PM.add(createSparcV8CodePrinterPass(Out, *this));
116
117  // Delete the MachineInstrs we generated, since they're no longer needed.
118  PM.add(createMachineCodeDeleter());
119  return false;
120}
121
122/// addPassesToJITCompile - Add passes to the specified pass manager to
123/// implement a fast dynamic compiler for this target.
124///
125void SparcV8JITInfo::addPassesToJITCompile(FunctionPassManager &PM) {
126  // FIXME: Implement efficient support for garbage collection intrinsics.
127  PM.add(createLowerGCPass());
128
129  // Replace malloc and free instructions with library calls.
130  PM.add(createLowerAllocationsPass());
131
132  // FIXME: implement the switch instruction in the instruction selector.
133  PM.add(createLowerSwitchPass());
134
135  // FIXME: implement the invoke/unwind instructions!
136  PM.add(createLowerInvokePass());
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