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7373792b4a
(1) A const accessor for the LLVMContext held by a ThreadSafeContext.
(2) A const accessor for the ThreadSafeModules held by an IRMaterializationUnit.
(3) A const MaterializationResponsibility reference to IRTransformLayer2's
transform function. This makes IRTransformLayer2 useful for JIT debugging
(since it can inspect JIT state through the responsibility argument) as well
as program transformations.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@343365 91177308-0d34-0410-b5e6-96231b3b80d8
117 lines
4.0 KiB
C++
117 lines
4.0 KiB
C++
//===- IRTransformLayer.h - Run all IR through a functor --------*- C++ -*-===//
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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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//
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// Run all IR passed in through a user supplied functor.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_EXECUTIONENGINE_ORC_IRTRANSFORMLAYER_H
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#define LLVM_EXECUTIONENGINE_ORC_IRTRANSFORMLAYER_H
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#include "llvm/ExecutionEngine/JITSymbol.h"
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#include "llvm/ExecutionEngine/Orc/Layer.h"
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#include <memory>
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#include <string>
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namespace llvm {
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class Module;
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namespace orc {
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class IRTransformLayer2 : public IRLayer {
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public:
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using TransformFunction = std::function<Expected<ThreadSafeModule>(
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ThreadSafeModule, const MaterializationResponsibility &R)>;
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IRTransformLayer2(ExecutionSession &ES, IRLayer &BaseLayer,
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TransformFunction Transform = identityTransform);
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void setTransform(TransformFunction Transform) {
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this->Transform = std::move(Transform);
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}
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void emit(MaterializationResponsibility R, VModuleKey K,
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ThreadSafeModule TSM) override;
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static ThreadSafeModule
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identityTransform(ThreadSafeModule TSM,
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const MaterializationResponsibility &R) {
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return TSM;
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}
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private:
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IRLayer &BaseLayer;
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TransformFunction Transform;
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};
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/// IR mutating layer.
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///
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/// This layer applies a user supplied transform to each module that is added,
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/// then adds the transformed module to the layer below.
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template <typename BaseLayerT, typename TransformFtor>
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class IRTransformLayer {
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public:
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/// Construct an IRTransformLayer with the given BaseLayer
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IRTransformLayer(BaseLayerT &BaseLayer,
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TransformFtor Transform = TransformFtor())
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: BaseLayer(BaseLayer), Transform(std::move(Transform)) {}
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/// Apply the transform functor to the module, then add the module to
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/// the layer below, along with the memory manager and symbol resolver.
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///
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/// @return A handle for the added modules.
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Error addModule(VModuleKey K, std::unique_ptr<Module> M) {
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return BaseLayer.addModule(std::move(K), Transform(std::move(M)));
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}
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/// Remove the module associated with the VModuleKey K.
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Error removeModule(VModuleKey K) { return BaseLayer.removeModule(K); }
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/// Search for the given named symbol.
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/// @param Name The name of the symbol to search for.
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/// @param ExportedSymbolsOnly If true, search only for exported symbols.
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/// @return A handle for the given named symbol, if it exists.
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JITSymbol findSymbol(const std::string &Name, bool ExportedSymbolsOnly) {
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return BaseLayer.findSymbol(Name, ExportedSymbolsOnly);
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}
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/// Get the address of the given symbol in the context of the module
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/// represented by the VModuleKey K. This call is forwarded to the base
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/// layer's implementation.
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/// @param K The VModuleKey for the module to search in.
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/// @param Name The name of the symbol to search for.
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/// @param ExportedSymbolsOnly If true, search only for exported symbols.
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/// @return A handle for the given named symbol, if it is found in the
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/// given module.
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JITSymbol findSymbolIn(VModuleKey K, const std::string &Name,
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bool ExportedSymbolsOnly) {
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return BaseLayer.findSymbolIn(K, Name, ExportedSymbolsOnly);
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}
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/// Immediately emit and finalize the module represented by the given
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/// VModuleKey.
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/// @param K The VModuleKey for the module to emit/finalize.
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Error emitAndFinalize(VModuleKey K) { return BaseLayer.emitAndFinalize(K); }
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/// Access the transform functor directly.
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TransformFtor& getTransform() { return Transform; }
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/// Access the mumate functor directly.
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const TransformFtor& getTransform() const { return Transform; }
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private:
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BaseLayerT &BaseLayer;
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TransformFtor Transform;
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};
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} // end namespace orc
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} // end namespace llvm
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#endif // LLVM_EXECUTIONENGINE_ORC_IRTRANSFORMLAYER_H
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