What is the entry point file in LLVM and Clang?

Question

I have setup a debugger with my Clang & LLVM projects. I want to make sure that it is working. So I want to put a breakpoint at a place where it will surely hit when I execute below command :

clang -S -emit-llvm foo.c

Please help me with the entrypoint function for these projects.

Thanks in advance.

Answer 1

Your debugging problems are probably arising from the fact that clang is only a driver, which prepares elaborate command line and invoke the actual compiler.

When debugging Clang, I use the following trick:

• First append -v to your command line to see actual commands the driver running.
• Use this output to start the debugging session.