//===----------------------------------------------------------------------===// // C Language Family Front-end //===----------------------------------------------------------------------===// Welcome to Clang. This is a compiler front-end for the C family of languages (C, C++, Objective-C, and Objective-C++) which is built as part of the LLVM compiler infrastructure project. Unlike many other compiler frontends, Clang is useful for a number of things beyond just compiling code: we intend for Clang to be host to a number of different source-level tools. One example of this is the Clang Static Analyzer. If you're interested in more (including how to build Clang) it is best to read the relevant web sites. Here are some pointers: Information on Clang: http://clang.llvm.org/ Building and using Clang: http://clang.llvm.org/get_started.html Clang Static Analyzer: http://clang-analyzer.llvm.org/ Information on the LLVM project: http://llvm.org/ If you have questions or comments about Clang, a great place to discuss them is on the Clang development mailing list: http://lists.cs.uiuc.edu/mailman/listinfo/cfe-dev If you find a bug in Clang, please file it in the LLVM bug tracker: http://llvm.org/bugs/
Justin Bogner
authored
When generating coverage regions, we were doing a linear search through the existing regions in order to try to merge related ones. Most of the time this would find what it was looking for in a small number of steps and it wasn't a big deal, but in cases with many regions and few mergeable ones this leads to an absurd compile time regression. This changes the coverage mapping logic to do a single sort and then merge as we go, which is a bit simpler and about 100 times faster. I've also added FIXMEs on a couple of behaviours that seem a little suspect, while keeping them behaving as they were - I'll look into these soon. The test changes here are mostly tedious reorganization, because the ordering of regions we output has become slightly (but not completely) more consistent from the almost completely arbitrary ordering we got before. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@218738 91177308-0d34-0410-b5e6-96231b3b80d8
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