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Re: [RFC][4.4] PR rtl-optimization/3507 appalling optimization with sub/cmp
- From: "Joseph S. Myers" <joseph at codesourcery dot com>
- To: Rask Ingemann Lambertsen <rask at sygehus dot dk>
- Cc: gcc-patches at gcc dot gnu dot org
- Date: Wed, 28 Nov 2007 23:10:40 +0000 (UTC)
- Subject: Re: [RFC][4.4] PR rtl-optimization/3507 appalling optimization with sub/cmp
- References: <20071128185122.GG17368@sygehus.dk>
On Wed, 28 Nov 2007, Rask Ingemann Lambertsen wrote:
> I'll be submitting approximately the patch below when trunk reopens for
> stage1. At the moment I'm looking for comments. For example, I'm expecting
> someone to say a few words about floating point issues, but feel free to
I'm not clear what you want said about floating-point issues (something
for a comment in the code about why it must be integer-only?), but for
example inf == inf but inf - inf == NaN.
--
Joseph S. Myers
joseph@codesourcery.com