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General symbol map #304

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merged 1 commit into from
Feb 2, 2025
Merged

General symbol map #304

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27 changes: 22 additions & 5 deletions src/enzyme_ad/jax/Passes/LowerKernel.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -190,10 +190,9 @@ struct CallInfo {
llvm::StringMap<CallInfo> kernels;
llvm::sys::SmartRWMutex<true> kernel_mutex;
std::unique_ptr<llvm::orc::LLJIT> JIT = nullptr;
llvm::orc::SymbolMap MappedSymbols;

CallInfo CompileHostModule(std::string &key, mlir::ModuleOp modOp,
bool run_init, size_t *cuLaunchPtr,
bool compileInit = true) {
bool initJIT() {
if (!JIT) {
auto tJIT =
llvm::orc::LLJITBuilder()
Expand All @@ -215,7 +214,7 @@ CallInfo CompileHostModule(std::string &key, mlir::ModuleOp modOp,
.create();
if (!tJIT) {
llvm::errs() << " jit creating error: " << tJIT.takeError() << "\n";
return {};
return false;
}
JIT = std::move(tJIT.get());
assert(JIT);
Expand All @@ -230,19 +229,33 @@ CallInfo CompileHostModule(std::string &key, mlir::ModuleOp modOp,
if (!ProcessSymsGenerator) {
llvm::errs() << " failure creating symbol generator: "
<< ProcessSymsGenerator.takeError() << "\n";
return {};
return false;
}

JIT->getMainJITDylib().addGenerator(std::move(ProcessSymsGenerator.get()));
}
return true;
}

extern "C" void EnzymeJaXMapSymbol(const char *name, void *symbol) {
initJIT();
MappedSymbols[JIT->mangleAndIntern(name)] = llvm::orc::ExecutorSymbolDef(
llvm::orc::ExecutorAddr::fromPtr(symbol), llvm::JITSymbolFlags());
}

CallInfo CompileHostModule(std::string &key, mlir::ModuleOp modOp,
bool run_init, size_t *cuLaunchPtr,
bool compileInit = true) {
std::unique_ptr<llvm::LLVMContext> ctx(new llvm::LLVMContext);
auto llvmModule = translateModuleToLLVMIR(modOp, *ctx);
if (!llvmModule) {
llvm::errs() << "modOp: " << *modOp << "\n";
llvm::errs() << "could not convert to LLVM IR\n";
return {};
}
if (!initJIT())
return {};

llvmModule->setDataLayout(JIT->getDataLayout());
llvmModule->setTargetTriple(JIT->getTargetTriple().getTriple());

Expand All @@ -254,6 +267,10 @@ CallInfo CompileHostModule(std::string &key, mlir::ModuleOp modOp,
llvm::errs() << " addIRModuleError " << Err << "\n";
return {};
}
if (auto Err = LibA->define(llvm::orc::absoluteSymbols(MappedSymbols))) {
llvm::errs() << " Symbol define Error " << Err << "\n";
return {};
}

if (cuLaunchPtr && cuLaunchPtr[0] == 0) {
// Look up the JIT'd code entry point.
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