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add a mechanism for the JIT to invoke a function to lazily create functions as they are referenced.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43210 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -64,6 +64,7 @@ class ExecutionEngine {
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const TargetData *TD;
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ExecutionEngineState state;
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bool LazyCompilationDisabled;
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protected:
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/// Modules - This is a list of ModuleProvider's that we are JIT'ing from. We
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/// use a smallvector to optimize for the case where there is only one module.
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@ -78,7 +79,11 @@ protected:
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// at startup time if they are linked in.
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typedef ExecutionEngine *(*EECtorFn)(ModuleProvider*, std::string*);
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static EECtorFn JITCtor, InterpCtor;
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/// LazyFunctionCreator - If an unknown function is needed, this function
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/// pointer is invoked to create it. If this returns null, the JIT will abort.
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void* (*LazyFunctionCreator)(const std::string &);
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public:
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/// lock - This lock is protects the ExecutionEngine, JIT, JITResolver and
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/// JITEmitter classes. It must be held while changing the internal state of
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@ -218,6 +223,14 @@ public:
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bool isLazyCompilationDisabled() const {
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return LazyCompilationDisabled;
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}
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/// InstallLazyFunctionCreator - If an unknown function is needed, the
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/// specified function pointer is invoked to create it. If it returns null,
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/// the JIT will abort.
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void InstallLazyFunctionCreator(void* (*P)(const std::string &)) {
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LazyFunctionCreator = P;
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}
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protected:
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void emitGlobals();
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