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 *createPPCTOCRegDepsPass();
40   FunctionPass *createPPCEarlyReturnPass();
41   FunctionPass *createPPCVSXCopyPass();
42   FunctionPass *createPPCVSXFMAMutatePass();
43   FunctionPass *createPPCVSXSwapRemovalPass();
44   FunctionPass *createPPCMIPeepholePass();
45   FunctionPass *createPPCBranchSelectionPass();
46   FunctionPass *createPPCISelDag(PPCTargetMachine &TM);
47   FunctionPass *createPPCTLSDynamicCallPass();
48   void LowerPPCMachineInstrToMCInst(const MachineInstr *MI, MCInst &OutMI,
49                                     AsmPrinter &AP, bool isDarwin);
50 
51   void initializePPCVSXFMAMutatePass(PassRegistry&);
52   extern char &PPCVSXFMAMutateID;
53 
54   namespace PPCII {
55 
56   /// Target Operand Flag enum.
57   enum TOF {
58     //===------------------------------------------------------------------===//
59     // PPC Specific MachineOperand flags.
60     MO_NO_FLAG,
61 
62     /// MO_PLT_OR_STUB - On a symbol operand "FOO", this indicates that the
63     /// reference is actually to the "FOO$stub" or "FOO@plt" symbol.  This is
64     /// used for calls and jumps to external functions on Tiger and earlier, and
65     /// for PIC calls on Linux and ELF systems.
66     MO_PLT_OR_STUB = 1,
67 
68     /// MO_PIC_FLAG - If this bit is set, the symbol reference is relative to
69     /// the function's picbase, e.g. lo16(symbol-picbase).
70     MO_PIC_FLAG = 2,
71 
72     /// MO_NLP_FLAG - If this bit is set, the symbol reference is actually to
73     /// the non_lazy_ptr for the global, e.g. lo16(symbol$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