gcc代码跟踪的分析文档，是台湾某大学的一个小组的毕设，是理解gcc的代码流程的不错的参考资料，我是找了很久才找到的，希望给需要的人。-gcc code tracking analysis of documents, is a university in Taiwan, a group set up to complete, is to understand the code gcc flow of good references, I was looking for a long time to find, and I hope to need.