A data dependence analyzer includes: inter-process communication detection means which, on the basis of a processing content of inter-process communication performed for transferring data to be copied between resources, detects the inter-process communication; access detection means which successively detects an access event to the data in the resource due to the process; recording means which, for each of the access events detected by the access detection means, records the access target data in the access event; and analysis means which, among the access target data recorded by the recording means, searches data respectively corresponding to the copy source and the copy destination of the data transferred through the inter-process communication detected by the inter-process communication detection means and imparts a dependence relationship between the searched data.