This is the mail archive of the
gcc-patches@gcc.gnu.org
mailing list for the GCC project.
Re: gcse.c patch for IA-64 glibc math test failures
- From: Richard Henderson <rth at redhat dot com>
- To: Jim Wilson <wilson at specifixinc dot com>
- Cc: gcc-patches at gcc dot gnu dot org
- Date: Tue, 16 Dec 2003 15:05:10 -0800
- Subject: Re: gcse.c patch for IA-64 glibc math test failures
- References: <1071565557.1019.123.camel@leaf.tuliptree.org>
On Tue, Dec 16, 2003 at 01:05:57AM -0800, Jim Wilson wrote:
> + && ! FLOAT_MODE_P (GET_MODE (XEXP (cond, 0)))
The correct test is HONOR_SIGNED_ZEROS. That takes care of
IEEE FP, non-IEEE FP, and flag_unsafe_math_optimizations.
It also documents the FP property that is of interest to
that particular optimization.
r~