4b546c9145
In particular this patch switches RTDyldObjectLinkingLayer to use
orc::SymbolResolver and threads the requried changse (ExecutionSession
references and VModuleKeys) through the existing layer APIs.
The purpose of the new resolver interface is to improve query performance and
better support parallelism, both in JIT'd code and within the compiler itself.
The most visibile change is switch of the <Layer>::addModule signatures from:
Expected<Handle> addModule(std::shared_ptr<ModuleType> Mod,
std::shared_ptr<JITSymbolResolver> Resolver)
to:
Expected<Handle> addModule(VModuleKey K, std::shared_ptr<ModuleType> Mod);
Typical usage of addModule will now look like:
auto K = ES.allocateVModuleKey();
Resolvers[K] = createSymbolResolver(...);
Layer.addModule(K, std::move(Mod));
See the BuildingAJIT tutorial code for example usage.
llvm-svn: 324405
39 lines
1.1 KiB
C++
39 lines
1.1 KiB
C++
//===---------- NullResolver.cpp - Reject symbol lookup requests ----------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/ExecutionEngine/Orc/NullResolver.h"
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#include "llvm/Support/ErrorHandling.h"
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namespace llvm {
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namespace orc {
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SymbolNameSet NullResolver::lookupFlags(SymbolFlagsMap &Flags,
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const SymbolNameSet &Symbols) {
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return Symbols;
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}
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SymbolNameSet NullResolver::lookup(AsynchronousSymbolQuery &Query,
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SymbolNameSet Symbols) {
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assert(Symbols.empty() && "Null resolver: Symbols must be empty");
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return Symbols;
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}
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JITSymbol NullLegacyResolver::findSymbol(const std::string &Name) {
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llvm_unreachable("Unexpected cross-object symbol reference");
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}
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JITSymbol
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NullLegacyResolver::findSymbolInLogicalDylib(const std::string &Name) {
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llvm_unreachable("Unexpected cross-object symbol reference");
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}
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} // End namespace orc.
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} // End namespace llvm.
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