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Re: reversing of FP conditions infrastructure
- To: Jan Hubicka <jh at suse dot cz>
- Subject: Re: reversing of FP conditions infrastructure
- From: Richard Henderson <rth at redhat dot com>
- Date: Sat, 6 Jan 2001 16:56:42 -0800
- Cc: patches at x86-64 dot org, rth at cygnus dot com, gcc-patches at gcc dot gnu dot org
- References: <20010106224912.F4737@atrey.karlin.mff.cuni.cz>
On Sat, Jan 06, 2001 at 10:49:12PM +0100, Jan Hubicka wrote:
> ! /* In case we already see unordered comparison, we can be sure to
> ! be dealing with floating point so we don't need any more tests. */
> ! return reverse_condition_maybe_unordered (code);
You can't do this genericly. The target must support
non-trapping forms of LT, GT, etc in order to be considered
reverses of UNGE, UNLE, etc.
r~