[Mips] Support reserving GPRs with -ffixed-N (#217013) NetBSD dedicates GPR $24 to mips_curlwp and passes -ffixed-24 when building the MIPS kernel. Add Clang driver options for numeric MIPS GPRs and lower them to reserve-gprN target features. Teach the backend to reserve the corresponding 32-bit register and its 64-bit super-register, and require named-register accesses to refer to reserved registers. Also replace the regex-based numeric register parsing with StringRef::getAsInteger and add driver, allocation, and global-register regression coverage. GitOrigin-RevId: 5d063386f51b7d9925df7db5f05ec2f0a33f63c4
Welcome to Clang.
This is a compiler front-end for the C family of languages (C, 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 websites. 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 forums:
If you find a bug in Clang, please file it in the LLVM bug tracker: