LLVM  7.0.0svn
Public Member Functions | List of all members
llvm::orc::NullLegacyResolver Class Reference

SymbolResolver impliementation that rejects all resolution requests. More...

#include "llvm/ExecutionEngine/Orc/NullResolver.h"

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Public Member Functions

JITSymbol findSymbol (const std::string &Name) final
 This method returns the address of the specified function or variable. More...
 
JITSymbol findSymbolInLogicalDylib (const std::string &Name) final
 This method returns the address of the specified symbol if it exists within the logical dynamic library represented by this JITSymbolResolver. More...
 
- Public Member Functions inherited from llvm::LegacyJITSymbolResolver
Expected< LookupResultlookup (const LookupSet &Symbols) final
 Performs lookup by, for each symbol, first calling findSymbolInLogicalDylib and if that fails calling findSymbol. More...
 
Expected< LookupFlagsResultlookupFlags (const LookupSet &Symbols) final
 Performs flags lookup by calling findSymbolInLogicalDylib and returning the flags value for that symbol. More...
 
- Public Member Functions inherited from llvm::JITSymbolResolver
virtual ~JITSymbolResolver ()=default
 

Additional Inherited Members

- Public Types inherited from llvm::JITSymbolResolver
using LookupSet = std::set< StringRef >
 
using LookupResult = std::map< StringRef, JITEvaluatedSymbol >
 
using LookupFlagsResult = std::map< StringRef, JITSymbolFlags >
 

Detailed Description

SymbolResolver impliementation that rejects all resolution requests.

Useful for clients that have no cross-object fixups.

Definition at line 35 of file NullResolver.h.

Member Function Documentation

◆ findSymbol()

JITSymbol llvm::orc::NullLegacyResolver::findSymbol ( const std::string &  Name)
finalvirtual

This method returns the address of the specified function or variable.

It is used to resolve symbols during module linking.

If the returned symbol's address is equal to ~0ULL then RuntimeDyld will skip all relocations for that symbol, and the client will be responsible for handling them manually.

Implements llvm::LegacyJITSymbolResolver.

Definition at line 29 of file NullResolver.cpp.

References llvm_unreachable.

◆ findSymbolInLogicalDylib()

JITSymbol llvm::orc::NullLegacyResolver::findSymbolInLogicalDylib ( const std::string &  Name)
finalvirtual

This method returns the address of the specified symbol if it exists within the logical dynamic library represented by this JITSymbolResolver.

Unlike findSymbol, queries through this interface should return addresses for hidden symbols.

This is of particular importance for the Orc JIT APIs, which support lazy compilation by breaking up modules: Each of those broken out modules must be able to resolve hidden symbols provided by the others. Clients writing memory managers for MCJIT can usually ignore this method.

This method will be queried by RuntimeDyld when checking for previous definitions of common symbols.

Implements llvm::LegacyJITSymbolResolver.

Definition at line 34 of file NullResolver.cpp.

References llvm_unreachable.


The documentation for this class was generated from the following files: