Test coverage for gcc/fortran/simplify.c ?

[Kaveh Ghazi]

How much test coverage does the gcc/fortran/simplify.c module have in our 
testsuite?  I'm especially interested in folding for complex functions like 
cos(a+bi) et al. where a and b are constants.  If someone could point me at 
the testcases I'd very much appreciate it, grep didn't narrow it down very 
much.

        Thanks,
        --Kaveh
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Kaveh R. Ghazi