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[Bug middle-end/19953] Special-case real + complex arithmetic operation (-ffast-math)
- From: "pinskia at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 1 Mar 2005 17:13:31 -0000
- Subject: [Bug middle-end/19953] Special-case real + complex arithmetic operation (-ffast-math)
- References: <20050214155119.19953.Thomas.Koenig@online.de>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Additional Comments From pinskia at gcc dot gnu dot org 2005-03-01 17:13 -------
(In reply to comment #15)
> I can only assume that this has regressed, that this is a
> little-endian problem (why it should be so is beyond me, though),
> that your specific vibes make this go away or that mine make it
> appear :-)
No because I tested on ppc-darwin also and got the same thing, -O3 -std=c99 enables
flag_complex_method=2 IIRC. Also -ffast-math produces slightly different result but if you look at the
final asm output you will see that the branch was removed, as I said before the branch is false always
but that is a different bug which is already filed.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19953