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Re: [PATCH] Fix PR target/28946
- From: Paul Brook <paul at codesourcery dot com>
- To: gcc-patches at gcc dot gnu dot org
- Cc: Roger Sayle <roger at eyesopen dot com>, Uros Bizjak <ubizjak at gmail dot com>
- Date: Tue, 5 Sep 2006 15:24:55 +0100
- Subject: Re: [PATCH] Fix PR target/28946
- References: <Pine.LNX.4.44.0609050705430.23144-100000@www.eyesopen.com>
> However if we stick with a combine solution, this might be one of
> those instances where we need to attempt to recognize the combination
> directly (to catch testl or a mythical shift-compare, ARM?), and if
> that fails, try again with a parallel containing the original SET.
I can confirm that ARM has a shift-compare instruction. In Thumb mode it is
preferable to the equivalent comparison.
Paul