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* [ORC] Re-apply r336760 with fixes.Lang Hames2018-07-211-1/+1
| | | | llvm-svn: 337637
* Re-apply r337595 with fix for LLVM_ENABLE_THREADS=Off.Lang Hames2018-07-201-2/+8
| | | | llvm-svn: 337626
* Revert r337595 "[ORC] Add new symbol lookup methods to ExecutionSessionBase ↵Reid Kleckner2018-07-201-8/+2
| | | | | | | | in preparation for" Breaks the build with LLVM_ENABLE_THREADS=OFF. llvm-svn: 337608
* [ORC] Add new symbol lookup methods to ExecutionSessionBase in preparation forLang Hames2018-07-201-2/+8
| | | | | | | | | | | | deprecating SymbolResolver and AsynchronousSymbolQuery. Both lookup overloads take a VSO search order to perform the lookup. The first overload is non-blocking and takes OnResolved and OnReady callbacks. The second is blocking, takes a boolean flag to indicate whether to wait until all symbols are ready, and returns a SymbolMap. Both overloads take a RegisterDependencies function to register symbol dependencies (if any) on the query. llvm-svn: 337595
* [ORC] Simplify VSO::lookupFlags to return the flags map.Lang Hames2018-07-201-2/+1
| | | | | | | | | | | This discards the unresolved symbols set and returns the flags map directly (rather than mutating it via the first argument). The unresolved symbols result made it easy to chain lookupFlags calls, but such chaining should be rare to non-existant (especially now that symbol resolvers are being deprecated) so the simpler method signature is preferable. llvm-svn: 337594
* [ORC] Replace SymbolResolvers in the new ORC layers with search orders on VSOs.Lang Hames2018-07-201-0/+2
| | | | | | | | | | | | | | | A search order is a list of VSOs to be searched linearly to find symbols. Each VSO now has a search order that will be used when fixing up definitions in that VSO. Each VSO's search order defaults to just that VSO itself. This is a first step towards removing symbol resolvers from ORC altogether. In practice symbol resolvers tended to be used to implement a search order anyway, sometimes with additional programatic generation of symbols. Now that VSOs support programmatic generation of definitions via fallback generators, search orders provide a cleaner way to achieve the desired effect (while removing a lot of boilerplate). llvm-svn: 337593
* [ORC] Add a WaitUntilReady argument to blockingLookup.Lang Hames2018-06-141-2/+2
| | | | | | | | | | | If WaitUntilReady is set to true then blockingLookup will return once all requested symbols are ready. If WaitUntilReady is set to false then blockingLookup will return as soon as all requested symbols have been resolved. In the latter case, if any error occurs in finalizing the symbols it will be reported to the ExecutionSession, rather than returned by blockingLookup. llvm-svn: 334722
* [ORC] Refactor blocking lookup logic into the blockingLookup function, andLang Hames2018-06-121-41/+11
| | | | | | | implement existing blocking lookups (the lookup function) and JITSymbolResolverAdapter on top of that. llvm-svn: 334537
* [ORC] Rewrite the VSO symbol table yet again. Update related utilities.Lang Hames2018-05-161-19/+21
| | | | | | | | | | | | | | | | | | | VSOs now track dependencies for materializing symbols. Each symbol must have its dependencies registered with the VSO prior to finalization. Usually this will involve registering the dependencies returned in AsynchronousSymbolQuery::ResolutionResults for queries made while linking the symbols being materialized. Queries against symbols are notified that a symbol is ready once it and all of its transitive dependencies are finalized, allowing compilation work to be broken up and moved between threads without queries returning until their symbols fully safe to access / execute. Related utilities (VSO, MaterializationUnit, MaterializationResponsibility) are updated to support dependence tracking and more explicitly track responsibility for symbols from the point of definition until they are finalized. llvm-svn: 332541
* [ORC] Switch to shared_ptr ownership for AsynchronousSymbolQueries.Lang Hames2018-02-141-2/+3
| | | | | | | Queries need to stay alive until each owner has set the values they are responsible for. llvm-svn: 325179
* [ORC] Start migrating ORC layers to use the new ORC Core.h APIs.Lang Hames2018-02-061-4/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | 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
* [ORC] Refactor the various lookupFlags methods to return the flags map via theLang Hames2018-01-251-1/+3
| | | | | | | | | | | | first argument. This makes lookupFlags more consistent with lookup (which takes the query as the first argument) and composes better in practice, since lookups are usually linearly chained: Each lookupFlags can populate the result map based on the symbols not found in the previous lookup. (If the maps were returned rather than passed by reference there would have to be a merge step at the end). llvm-svn: 323398
* [ORC] Add orc::SymbolResolver, a Orc/Legacy API interop header, and anLang Hames2018-01-221-0/+75
orc::SymbolResolver to JITSymbolResolver adapter. The new orc::SymbolResolver interface uses asynchronous queries for better performance. (Asynchronous queries with bulk lookup minimize RPC/IPC overhead, support parallel incoming queries, and expose more available work for distribution). Existing ORC layers will soon be updated to use the orc::SymbolResolver API rather than the legacy llvm::JITSymbolResolver API. Because RuntimeDyld still uses JITSymbolResolver, this patch also includes an adapter that wraps an orc::SymbolResolver with a JITSymbolResolver API. llvm-svn: 323073
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