PPCTargetMachine.cpp revision 7cd444082e54207fbb8ed0c958c7a23ed334650c 
1//===-- PowerPCTargetMachine.cpp - Define TargetMachine for PowerPC -------===//
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 "PowerPCTargetMachine.h"
14#include "PowerPC.h"
15#include "llvm/Module.h"
16#include "llvm/PassManager.h"
17#include "llvm/CodeGen/IntrinsicLowering.h"
18#include "llvm/CodeGen/MachineFunction.h"
19#include "llvm/CodeGen/Passes.h"
20#include "llvm/Target/TargetMachineImpls.h"
21#include "llvm/Transforms/Scalar.h"
22using namespace llvm;
23
24// allocatePowerPCTargetMachine - Allocate and return a subclass of
25// TargetMachine that implements the PowerPC backend.
26//
27TargetMachine *llvm::allocatePowerPCTargetMachine(const Module &M,
28                                                  IntrinsicLowering *IL) {
29  return new PowerPCTargetMachine(M, IL);
30}
31
32/// PowerPCTargetMachine ctor - Create an ILP32 architecture model
33///
34/// FIXME: Should double alignment be 8 bytes?  Then we get a PtrAl != DoubleAl abort
35PowerPCTargetMachine::PowerPCTargetMachine(const Module &M,
36                                           IntrinsicLowering *IL)
37  : TargetMachine("PowerPC", IL, false, 4, 4, 4, 4, 4, 4, 4, 4),
38    FrameInfo(TargetFrameInfo::StackGrowsDown, 16, -4), JITInfo(*this) {
39}
40
41/// addPassesToEmitAssembly - Add passes to the specified pass manager
42/// to implement a static compiler for this target.
43///
44bool PowerPCTargetMachine::addPassesToEmitAssembly(PassManager &PM,
45					       std::ostream &Out) {
46  // FIXME: Implement efficient support for garbage collection intrinsics.
47  PM.add(createLowerGCPass());
48
49  // FIXME: Implement the invoke/unwind instructions!
50  PM.add(createLowerInvokePass());
51
52  // FIXME: The code generator does not properly handle functions with
53  // unreachable basic blocks.
54  PM.add(createCFGSimplificationPass());
55
56  // FIXME: Implement the switch instruction in the instruction selector!
57  PM.add(createLowerSwitchPass());
58
59  PM.add(createPPCSimpleInstructionSelector(*this));
60
61  if (PrintMachineCode)
62    PM.add(createMachineFunctionPrinterPass(&std::cerr));
63
64  PM.add(createRegisterAllocator());
65
66  if (PrintMachineCode)
67    PM.add(createMachineFunctionPrinterPass(&std::cerr));
68
69  PM.add(createPrologEpilogCodeInserter());
70  PM.add(createPPCCodePrinterPass(Out, *this));
71  PM.add(createMachineCodeDeleter());
72  return false;
73}
74
75/// addPassesToJITCompile - Add passes to the specified pass manager to
76/// implement a fast dynamic compiler for this target.
77///
78void PowerPCJITInfo::addPassesToJITCompile(FunctionPassManager &PM) {
79  // FIXME: Implement efficient support for garbage collection intrinsics.
80  PM.add(createLowerGCPass());
81
82  // FIXME: Implement the invoke/unwind instructions!
83  PM.add(createLowerInvokePass());
84
85  // FIXME: The code generator does not properly handle functions with
86  // unreachable basic blocks.
87  PM.add(createCFGSimplificationPass());
88
89  // FIXME: Implement the switch instruction in the instruction selector!
90  PM.add(createLowerSwitchPass());
91
92  PM.add(createPPCSimpleInstructionSelector(TM));
93  PM.add(createRegisterAllocator());
94  PM.add(createPrologEpilogCodeInserter());
95}
96
97