Method CodegenWriteToSlot

be/src/runtime/descriptors.cc:923–944

Example IR for materializing a string column with non-NULL 'pool'. Includes the part that is generated by CodegenAnyVal::ToReadWriteInfo(). Produced for the following query as part of the @MaterializeExprs() function. select string_col from functional_orc_def.alltypes order by string_col limit 2; ; [insert point starts here] br label %entry1 entry1: ; p

// end_write:                                        ; preds = %null, %non_null
//   ; [insert point ends here]
void SlotDescriptor::CodegenWriteToSlot(const CodegenAnyValReadWriteInfo& read_write_info,
    llvm::Value* tuple_llvm_struct_ptr, llvm::Value* pool_val,
    llvm::BasicBlock* insert_before) const {
  DCHECK(tuple_llvm_struct_ptr->getType()->isPointerTy());
  DCHECK(tuple_llvm_struct_ptr->getType()->getPointerElementType()->isStructTy());
  LlvmBuilder* builder = read_write_info.builder();
  llvm::LLVMContext& context = read_write_info.codegen()->context();
  llvm::Function* fn = builder->GetInsertBlock()->getParent();

  // Create new block that will come after conditional blocks if necessary
  if (insert_before == nullptr) {
    insert_before = llvm::BasicBlock::Create(context, "end_write", fn);
  }

  read_write_info.entry_block().BranchTo(builder);

  CodegenWriteToSlotHelper(read_write_info, tuple_llvm_struct_ptr,
      tuple_llvm_struct_ptr, pool_val, NonWritableBasicBlock(insert_before));

  // Leave builder_ after conditional blocks
  builder->SetInsertPoint(insert_before);
}

llvm::Value* SlotDescriptor::CodegenGetNullByte(
    LlvmCodeGen* codegen, LlvmBuilder* builder,