optimization/9052: in C code, "if" statement fails to execute if optimized

[Eric Botcazou]

> How about 8445, 9654?  Those are "bugs" that disappear with
> -ffloat-store, too.  Like I said, I don't know enough about floating
> point numbers...

Toon seems to think that PR fortran/8445 is indeed the same problem. But it's 
up to him to decide whether to close the bug.

PR optimization/9654 is exactly the same problem: using FP registers on x86 
adds extra-precision which can modify comparison results. Nothing can be done 
about that, other than using -ffloat-store which is precisely intended to 
address the issue.

-- 
Eric Botcazou