How to run C++ IPA tests?

[Erick Ochoa]

Hi,

I have been adding tests to the gcc/testsuite/gcc.dg/ipa folder
successfully for a while now. I am starting to add some tests into
gcc/testsuite/g++.dg/ipa now but I am having some issues.

1. Using `make check-g++` returns the following error message "No rule
to make target 'check-g++'".
2. While `make check-gcc` works, this seems to be only for C tests
(which is correct).
3. When I type `make check RUNTESTS="ipa.exp"`  but the section "g++
Summary" looks empty.
4. I have added a test that I know will fail, but I don't see it
(because I don't think I have run g++ tests correctly).

To make sure that I haven't changed anything with my transformation I
actually checked out releases/gcc-11.2.0

Can someone tell me how to run the C++ IPA tests? I'm sure there is
something silly that I'm doing wrong, but can't find out what it is.

Thanks!