[llvm-dev] option similar to -finstrument-functions but for code blocks

[David Greene via llvm-dev]

Peng Yu via llvm-dev <llvm-dev at lists.llvm.org> writes:

> I'd like to track not just at the function level, but also at the code
> block level. For example, for a if-else statement, I want to know when
> the if-branch or else-branch is enter/exit.
>
> Is there a clang option similar to -finstrument-functions for code blocks?

Are you looking for code coverage or profile information (block
execution counts)?  Dean already replied with the code coverage
information.  LLVM has a profile instrumentation pass which is run with
opt -profile-generate.  This is gprof-style profiling.  I don't know
offhand which (if any) clang option is hooked up to -profile-generate.

                           -David