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Error if inttoptr during sret/root movement #2769

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Error if inttoptr during sret/root movement #2769

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25 changes: 22 additions & 3 deletions enzyme/Enzyme/Utils.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -4750,9 +4750,28 @@ llvm::Value *moveSRetToFromRoots(llvm::IRBuilder<> &B, llvm::Type *jltype,
}
case SRetRootMovement::SRetValueToRootPointer: {
Value *outloc = GradientUtils::extractMeta(B, sret, path);
outloc = B.CreatePointerCast(
outloc, PointerType::get(StructType::get(outloc->getContext(), {}),
Tracked));
if (!outloc->getType()->isPointerTy()) {
if (CustomErrorHandler) {
std::string str;
llvm::raw_string_ostream ss(str);
ss << "Illegal unboxed parameter in moveSRetToFromRoots. Expected "
"pointer type, got: "
<< *outloc->getType();
CustomErrorHandler(ss.str().c_str(), wrap(outloc),
ErrorType::InternalError, nullptr, nullptr,
wrap(&B));
} else {
llvm::errs() << "Illegal unboxed parameter in moveSRetToFromRoots. "
"Expected pointer type, got: "
<< *outloc->getType() << "\n";
llvm_unreachable("Attempted to root unboxed aggregate element "
"which is an integer instead of pointer");
}
} else {
outloc = B.CreatePointerCast(
outloc, PointerType::get(
StructType::get(outloc->getContext(), {}), Tracked));
}
B.CreateStore(outloc, loc);
break;
}
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