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   FunctionPass *createPPCBoolRetToIntPass();
49   void LowerPPCMachineInstrToMCInst(const MachineInstr *MI, MCInst &OutMI,
50                                     AsmPrinter &AP, bool isDarwin);
51 
52   void initializePPCVSXFMAMutatePass(PassRegistry&);
53   void initializePPCBoolRetToIntPass(PassRegistry&);
54   extern char &PPCVSXFMAMutateID;
55 
56   namespace PPCII {
57 
58   /// Target Operand Flag enum.
59   enum TOF {
60     //===------------------------------------------------------------------===//
61     // PPC Specific MachineOperand flags.
62     MO_NO_FLAG,
63 
64     /// MO_PLT_OR_STUB - On a symbol operand "FOO", this indicates that the
65     /// reference is actually to the "FOO$stub" or "FOO@plt" symbol.  This is
66     /// used for calls and jumps to external functions on Tiger and earlier, and
67     /// for PIC calls on Linux and ELF systems.
68     MO_PLT_OR_STUB = 1,
69 
70     /// MO_PIC_FLAG - If this bit is set, the symbol reference is relative to
71     /// the function's picbase, e.g. lo16(symbol-picbase).
72     MO_PIC_FLAG = 2,
73 
74     /// MO_NLP_FLAG - If this bit is set, the symbol reference is actually to
75     /// the non_lazy_ptr for the global, e.g. lo16(symbol$non_lazy_ptr-picbase).
76     MO_NLP_FLAG = 4,
77 
78     /// MO_NLP_HIDDEN_FLAG - If this bit is set, the symbol reference is to a
79     /// symbol with hidden visibility.  This causes a different kind of
80     /// non-lazy-pointer to be generated.
81     MO_NLP_HIDDEN_FLAG = 8,
82 
83     /// The next are not flags but distinct values.
84     MO_ACCESS_MASK = 0xf0,
85 
86     /// MO_LO, MO_HA - lo16(symbol) and ha16(symbol)
87     MO_LO = 1 << 4,
88     MO_HA = 2 << 4,
89 
90     MO_TPREL_LO = 4 << 4,
91     MO_TPREL_HA = 3 << 4,
92 
93     /// These values identify relocations on immediates folded
94     /// into memory operations.
95     MO_DTPREL_LO = 5 << 4,
96     MO_TLSLD_LO  = 6 << 4,
97     MO_TOC_LO    = 7 << 4,
98 
99     // Symbol for VK_PPC_TLS fixup attached to an ADD instruction
100     MO_TLS       = 8 << 4
101   };
102   } // end namespace PPCII
103 
104 } // end namespace llvm;
105 
106 #endif
107