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| 14 | pmbaty | 1 | //===- llvm/CodeGen/MachineModuleInfoImpls.h --------------------*- C++ -*-===// |
| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | // |
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| 9 | // This file defines object-file format specific implementations of |
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| 10 | // MachineModuleInfoImpl. |
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| 11 | // |
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| 12 | //===----------------------------------------------------------------------===// |
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| 13 | |||
| 14 | #ifndef LLVM_CODEGEN_MACHINEMODULEINFOIMPLS_H |
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| 15 | #define LLVM_CODEGEN_MACHINEMODULEINFOIMPLS_H |
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| 16 | |||
| 17 | #include "llvm/ADT/DenseMap.h" |
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| 18 | #include "llvm/ADT/StringSet.h" |
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| 19 | #include "llvm/CodeGen/MachineModuleInfo.h" |
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| 20 | #include <cassert> |
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| 21 | |||
| 22 | namespace llvm { |
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| 23 | |||
| 24 | class MCSymbol; |
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| 25 | |||
| 26 | /// MachineModuleInfoMachO - This is a MachineModuleInfoImpl implementation |
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| 27 | /// for MachO targets. |
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| 28 | class MachineModuleInfoMachO : public MachineModuleInfoImpl { |
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| 29 | /// GVStubs - Darwin '$non_lazy_ptr' stubs. The key is something like |
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| 30 | /// "Lfoo$non_lazy_ptr", the value is something like "_foo". The extra bit |
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| 31 | /// is true if this GV is external. |
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| 32 | DenseMap<MCSymbol *, StubValueTy> GVStubs; |
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| 33 | |||
| 34 | /// ThreadLocalGVStubs - Darwin '$non_lazy_ptr' stubs. The key is something |
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| 35 | /// like "Lfoo$non_lazy_ptr", the value is something like "_foo". The extra |
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| 36 | /// bit is true if this GV is external. |
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| 37 | DenseMap<MCSymbol *, StubValueTy> ThreadLocalGVStubs; |
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| 38 | |||
| 39 | virtual void anchor(); // Out of line virtual method. |
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| 40 | |||
| 41 | public: |
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| 42 | MachineModuleInfoMachO(const MachineModuleInfo &) {} |
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| 43 | |||
| 44 | StubValueTy &getGVStubEntry(MCSymbol *Sym) { |
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| 45 | assert(Sym && "Key cannot be null"); |
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| 46 | return GVStubs[Sym]; |
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| 47 | } |
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| 48 | |||
| 49 | StubValueTy &getThreadLocalGVStubEntry(MCSymbol *Sym) { |
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| 50 | assert(Sym && "Key cannot be null"); |
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| 51 | return ThreadLocalGVStubs[Sym]; |
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| 52 | } |
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| 53 | |||
| 54 | /// Accessor methods to return the set of stubs in sorted order. |
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| 55 | SymbolListTy GetGVStubList() { return getSortedStubs(GVStubs); } |
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| 56 | SymbolListTy GetThreadLocalGVStubList() { |
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| 57 | return getSortedStubs(ThreadLocalGVStubs); |
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| 58 | } |
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| 59 | }; |
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| 60 | |||
| 61 | /// MachineModuleInfoELF - This is a MachineModuleInfoImpl implementation |
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| 62 | /// for ELF targets. |
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| 63 | class MachineModuleInfoELF : public MachineModuleInfoImpl { |
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| 64 | /// GVStubs - These stubs are used to materialize global addresses in PIC |
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| 65 | /// mode. |
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| 66 | DenseMap<MCSymbol *, StubValueTy> GVStubs; |
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| 67 | |||
| 68 | virtual void anchor(); // Out of line virtual method. |
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| 69 | |||
| 70 | public: |
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| 71 | MachineModuleInfoELF(const MachineModuleInfo &) {} |
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| 72 | |||
| 73 | StubValueTy &getGVStubEntry(MCSymbol *Sym) { |
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| 74 | assert(Sym && "Key cannot be null"); |
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| 75 | return GVStubs[Sym]; |
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| 76 | } |
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| 77 | |||
| 78 | /// Accessor methods to return the set of stubs in sorted order. |
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| 79 | |||
| 80 | SymbolListTy GetGVStubList() { return getSortedStubs(GVStubs); } |
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| 81 | }; |
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| 82 | |||
| 83 | /// MachineModuleInfoCOFF - This is a MachineModuleInfoImpl implementation |
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| 84 | /// for COFF targets. |
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| 85 | class MachineModuleInfoCOFF : public MachineModuleInfoImpl { |
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| 86 | /// GVStubs - These stubs are used to materialize global addresses in PIC |
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| 87 | /// mode. |
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| 88 | DenseMap<MCSymbol *, StubValueTy> GVStubs; |
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| 89 | |||
| 90 | virtual void anchor(); // Out of line virtual method. |
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| 91 | |||
| 92 | public: |
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| 93 | MachineModuleInfoCOFF(const MachineModuleInfo &) {} |
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| 94 | |||
| 95 | StubValueTy &getGVStubEntry(MCSymbol *Sym) { |
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| 96 | assert(Sym && "Key cannot be null"); |
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| 97 | return GVStubs[Sym]; |
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| 98 | } |
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| 99 | |||
| 100 | /// Accessor methods to return the set of stubs in sorted order. |
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| 101 | |||
| 102 | SymbolListTy GetGVStubList() { return getSortedStubs(GVStubs); } |
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| 103 | }; |
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| 104 | |||
| 105 | /// MachineModuleInfoWasm - This is a MachineModuleInfoImpl implementation |
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| 106 | /// for Wasm targets. |
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| 107 | class MachineModuleInfoWasm : public MachineModuleInfoImpl { |
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| 108 | virtual void anchor(); // Out of line virtual method. |
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| 109 | |||
| 110 | public: |
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| 111 | MachineModuleInfoWasm(const MachineModuleInfo &) {} |
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| 112 | |||
| 113 | StringSet<> MachineSymbolsUsed; |
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| 114 | }; |
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| 115 | |||
| 116 | } // end namespace llvm |
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| 117 | |||
| 118 | #endif // LLVM_CODEGEN_MACHINEMODULEINFOIMPLS_H |