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_LIB_TARGET_POWERPC_PPC_H
16 #define LLVM_LIB_TARGET_POWERPC_PPC_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 
24 namespace llvm {
25   class PPCTargetMachine;
26   class PassRegistry;
27   class FunctionPass;
28   class ImmutablePass;
29   class MachineInstr;
30   class AsmPrinter;
31   class MCInst;
32 
33   FunctionPass *createPPCCTRLoops(PPCTargetMachine &TM);
34 #ifndef NDEBUG
35   FunctionPass *createPPCCTRLoopsVerify();
36 #endif
37   FunctionPass *createPPCLoopDataPrefetchPass();
38   FunctionPass *createPPCLoopPreIncPrepPass(PPCTargetMachine &TM);
39   FunctionPass *createPPCEarlyReturnPass();
40   FunctionPass *createPPCVSXCopyPass();
41   FunctionPass *createPPCVSXFMAMutatePass();
42   FunctionPass *createPPCBranchSelectionPass();
43   FunctionPass *createPPCISelDag(PPCTargetMachine &TM);
44   FunctionPass *createPPCTLSDynamicCallPass();
45   void LowerPPCMachineInstrToMCInst(const MachineInstr *MI, MCInst &OutMI,
46                                     AsmPrinter &AP, bool isDarwin);
47 
48   void initializePPCVSXFMAMutatePass(PassRegistry&);
49   extern char &PPCVSXFMAMutateID;
50 
51   namespace PPCII {
52 
53   /// Target Operand Flag enum.
54   enum TOF {
55     //===------------------------------------------------------------------===//
56     // PPC Specific MachineOperand flags.
57     MO_NO_FLAG,
58 
59     /// MO_PLT_OR_STUB - On a symbol operand "FOO", this indicates that the
60     /// reference is actually to the "FOO$stub" or "FOO@plt" symbol.  This is
61     /// used for calls and jumps to external functions on Tiger and earlier, and
62     /// for PIC calls on Linux and ELF systems.
63     MO_PLT_OR_STUB = 1,
64 
65     /// MO_PIC_FLAG - If this bit is set, the symbol reference is relative to
66     /// the function's picbase, e.g. lo16(symbol-picbase).
67     MO_PIC_FLAG = 2,
68 
69     /// MO_NLP_FLAG - If this bit is set, the symbol reference is actually to
70     /// the non_lazy_ptr for the global, e.g. lo16(symbol$non_lazy_ptr-picbase).
71     MO_NLP_FLAG = 4,
72 
73     /// MO_NLP_HIDDEN_FLAG - If this bit is set, the symbol reference is to a
74     /// symbol with hidden visibility.  This causes a different kind of
75     /// non-lazy-pointer to be generated.
76     MO_NLP_HIDDEN_FLAG = 8,
77 
78     /// The next are not flags but distinct values.
79     MO_ACCESS_MASK = 0xf0,
80 
81     /// MO_LO, MO_HA - lo16(symbol) and ha16(symbol)
82     MO_LO = 1 << 4,
83     MO_HA = 2 << 4,
84 
85     MO_TPREL_LO = 4 << 4,
86     MO_TPREL_HA = 3 << 4,
87 
88     /// These values identify relocations on immediates folded
89     /// into memory operations.
90     MO_DTPREL_LO = 5 << 4,
91     MO_TLSLD_LO  = 6 << 4,
92     MO_TOC_LO    = 7 << 4,
93 
94     // Symbol for VK_PPC_TLS fixup attached to an ADD instruction
95     MO_TLS       = 8 << 4
96   };
97   } // end namespace PPCII
98 
99 } // end namespace llvm;
100 
101 #endif
102