PPC.h revision 36b56886974eae4f9c5ebc96befd3e7bfe5de338 
1//===-- PPC.h - Top-level interface for PowerPC Target ----------*- C++ -*-===//
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// This file contains the entry points for global functions defined in the LLVM
11// PowerPC back-end.
12//
13//===----------------------------------------------------------------------===//
14
15#ifndef LLVM_TARGET_POWERPC_H
16#define LLVM_TARGET_POWERPC_H
17
18#include "MCTargetDesc/PPCMCTargetDesc.h"
19#include <string>
20
21// GCC #defines PPC on Linux but we use it as our namespace name
22#undef PPC
23
24namespace llvm {
25  class PPCTargetMachine;
26  class PassRegistry;
27  class FunctionPass;
28  class ImmutablePass;
29  class JITCodeEmitter;
30  class MachineInstr;
31  class AsmPrinter;
32  class MCInst;
33
34  FunctionPass *createPPCCTRLoops(PPCTargetMachine &TM);
35#ifndef NDEBUG
36  FunctionPass *createPPCCTRLoopsVerify();
37#endif
38  FunctionPass *createPPCEarlyReturnPass();
39  FunctionPass *createPPCVSXCopyPass();
40  FunctionPass *createPPCVSXCopyCleanupPass();
41  FunctionPass *createPPCVSXFMAMutatePass();
42  FunctionPass *createPPCBranchSelectionPass();
43  FunctionPass *createPPCISelDag(PPCTargetMachine &TM);
44  FunctionPass *createPPCJITCodeEmitterPass(PPCTargetMachine &TM,
45                                            JITCodeEmitter &MCE);
46  void LowerPPCMachineInstrToMCInst(const MachineInstr *MI, MCInst &OutMI,
47                                    AsmPrinter &AP, bool isDarwin);
48
49  /// \brief Creates an PPC-specific Target Transformation Info pass.
50  ImmutablePass *createPPCTargetTransformInfoPass(const PPCTargetMachine *TM);
51
52  void initializePPCVSXFMAMutatePass(PassRegistry&);
53  extern char &PPCVSXFMAMutateID;
54
55  namespace PPCII {
56
57  /// Target Operand Flag enum.
58  enum TOF {
59    //===------------------------------------------------------------------===//
60    // PPC Specific MachineOperand flags.
61    MO_NO_FLAG,
62
63    /// MO_DARWIN_STUB - On a symbol operand "FOO", this indicates that the
64    /// reference is actually to the "FOO$stub" symbol.  This is used for calls
65    /// and jumps to external functions on Tiger and earlier.
66    MO_DARWIN_STUB = 1,
67
68    /// MO_PIC_FLAG - If this bit is set, the symbol reference is relative to
69    /// the function's picbase, e.g. lo16(symbol-picbase).
70    MO_PIC_FLAG = 2,
71
72    /// MO_NLP_FLAG - If this bit is set, the symbol reference is actually to
73    /// the non_lazy_ptr for the global, e.g. lo16(symbol$non_lazy_ptr-picbase).
74    MO_NLP_FLAG = 4,
75
76    /// MO_NLP_HIDDEN_FLAG - If this bit is set, the symbol reference is to a
77    /// symbol with hidden visibility.  This causes a different kind of
78    /// non-lazy-pointer to be generated.
79    MO_NLP_HIDDEN_FLAG = 8,
80
81    /// The next are not flags but distinct values.
82    MO_ACCESS_MASK = 0xf0,
83
84    /// MO_LO, MO_HA - lo16(symbol) and ha16(symbol)
85    MO_LO = 1 << 4,
86    MO_HA = 2 << 4,
87
88    MO_TPREL_LO = 4 << 4,
89    MO_TPREL_HA = 3 << 4,
90
91    /// These values identify relocations on immediates folded
92    /// into memory operations.
93    MO_DTPREL_LO = 5 << 4,
94    MO_TLSLD_LO  = 6 << 4,
95    MO_TOC_LO    = 7 << 4,
96
97    // Symbol for VK_PPC_TLS fixup attached to an ADD instruction
98    MO_TLS       = 8 << 4
99  };
100  } // end namespace PPCII
101
102} // end namespace llvm;
103
104#endif
105