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Re: [PATCH] Constant fold "bitop" builtins at the tree-level.
- From: Richard Henderson <rth at redhat dot com>
- To: Roger Sayle <roger at eyesopen dot com>
- Cc: gcc-patches at gcc dot gnu dot org
- Date: Mon, 25 Aug 2003 17:14:45 -0700
- Subject: Re: [PATCH] Constant fold "bitop" builtins at the tree-level.
- References: <Pine.LNX.4.44.0308242048580.6946-100000@www.eyesopen.com>
On Sun, Aug 24, 2003 at 09:01:40PM -0600, Roger Sayle wrote:
> Whilst I was working on this patch, I also noticed that the CONST_DOUBLE
> forms of the CLZ and CTZ RTL simplifiers weren't honoring the target
> macros CLZ_DEFINED_VALUE_AT_ZERO and CTZ_DEFINED_VALUE_AT_ZERO. These
> macros are already being honored in the CONST_INT RTL simplifiers.
A zero const_double would be non-canonical.
r~