From: "Richard Guenther" <richard.guent...@gmail.com>
Thanks, I do want to test the middle-end. However I need to do more than
just create the complex expression. I also have to pass it to a builtin
that evaluates using MPC like __builtin_csin(). The fortran frontend
evaluates complex transcendentals in fortran/simplify.c, not in the
middle-end. So it wouldn't test what I want AFAICT. It's not a big
deal,
the nan cases are error paths that should *avoid* folding via MPC.
If you go through memory the compiler should promote that to a register
and constant propagate the result, isn't that enough?
All the previous tests of this nature were in
gcc.dg/torture/builtin-math-*.c and are done at all opt levels
including -O0. I think your suggestion works, but only when optimizing.
Also, I think it doesn't work with -fdump-tree-original, I'd have to inspect
a different dump file. (Any thoughts on which one?)
The obsessive part of my brain wants to keep everything the same as the
other tests. :-) But I suppose it would work, I just have to tweek it with
these things in mind.
--Kaveh
