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 "llvm/Support/CodeGen.h"
19 #include "MCTargetDesc/PPCMCTargetDesc.h"
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 MachineInstr;
29   class AsmPrinter;
30   class MCInst;
31 
32   FunctionPass *createPPCCTRLoops();
33 #ifndef NDEBUG
34   FunctionPass *createPPCCTRLoopsVerify();
35 #endif
36   FunctionPass *createPPCLoopPreIncPrepPass(PPCTargetMachine &TM);
37   FunctionPass *createPPCTOCRegDepsPass();
38   FunctionPass *createPPCEarlyReturnPass();
39   FunctionPass *createPPCVSXCopyPass();
40   FunctionPass *createPPCVSXFMAMutatePass();
41   FunctionPass *createPPCVSXSwapRemovalPass();
42   FunctionPass *createPPCMIPeepholePass();
43   FunctionPass *createPPCBranchSelectionPass();
44   FunctionPass *createPPCQPXLoadSplatPass();
45   FunctionPass *createPPCISelDag(PPCTargetMachine &TM, CodeGenOpt::Level OL);
46   FunctionPass *createPPCTLSDynamicCallPass();
47   FunctionPass *createPPCBoolRetToIntPass();
48   FunctionPass *createPPCExpandISELPass();
49   void LowerPPCMachineInstrToMCInst(const MachineInstr *MI, MCInst &OutMI,
50                                     AsmPrinter &AP, bool isDarwin);
51 
52   void initializePPCVSXFMAMutatePass(PassRegistry&);
53   void initializePPCBoolRetToIntPass(PassRegistry&);
54   void initializePPCExpandISELPass(PassRegistry &);
55   void initializePPCTLSDynamicCallPass(PassRegistry &);
56   extern char &PPCVSXFMAMutateID;
57 
58   namespace PPCII {
59 
60   /// Target Operand Flag enum.
61   enum TOF {
62     //===------------------------------------------------------------------===//
63     // PPC Specific MachineOperand flags.
64     MO_NO_FLAG,
65 
66     /// On a symbol operand "FOO", this indicates that the reference is actually
67     /// to "FOO@plt".  This is used for calls and jumps to external functions on
68     /// for PIC calls on Linux and ELF systems.
69     MO_PLT = 1,
70 
71     /// MO_PIC_FLAG - If this bit is set, the symbol reference is relative to
72     /// the function's picbase, e.g. lo16(symbol-picbase).
73     MO_PIC_FLAG = 2,
74 
75     /// MO_NLP_FLAG - If this bit is set, the symbol reference is actually to
76     /// the non_lazy_ptr for the global, e.g. lo16(symbol$non_lazy_ptr-picbase).
77     MO_NLP_FLAG = 4,
78 
79     /// MO_NLP_HIDDEN_FLAG - If this bit is set, the symbol reference is to a
80     /// symbol with hidden visibility.  This causes a different kind of
81     /// non-lazy-pointer to be generated.
82     MO_NLP_HIDDEN_FLAG = 8,
83 
84     /// The next are not flags but distinct values.
85     MO_ACCESS_MASK = 0xf0,
86 
87     /// MO_LO, MO_HA - lo16(symbol) and ha16(symbol)
88     MO_LO = 1 << 4,
89     MO_HA = 2 << 4,
90 
91     MO_TPREL_LO = 4 << 4,
92     MO_TPREL_HA = 3 << 4,
93 
94     /// These values identify relocations on immediates folded
95     /// into memory operations.
96     MO_DTPREL_LO = 5 << 4,
97     MO_TLSLD_LO = 6 << 4,
98     MO_TOC_LO = 7 << 4,
99 
100     // Symbol for VK_PPC_TLS fixup attached to an ADD instruction
101     MO_TLS = 8 << 4
102   };
103   } // end namespace PPCII
104 
105 } // end namespace llvm;
106 
107 #endif
108