From: Georg-Johann Lay <avr@gjlay.de>
To: Richard Henderson <rth@redhat.com>
Cc: gcc-patches@gcc.gnu.org, Denis Chertykov <chertykov@gmail.com>,
"Eric B. Weddington" <eric.weddington@atmel.com>,
Anatoly Sokolov <aesok@post.ru>
Subject: Re: [Patch, AVR]: PR49313, fix PR29524
Date: Fri, 17 Jun 2011 17:32:00 -0000 [thread overview]
Message-ID: <4DFB77EC.1000000@gjlay.de> (raw)
In-Reply-To: <4DFB73FC.2030400@redhat.com>
Richard Henderson schrieb:
> On 06/17/2011 02:20 AM, Georg-Johann Lay wrote:
>> Richard Henderson schrieb:
>>> On 06/15/2011 02:47 AM, Georg-Johann Lay wrote:
>>
>> Yes, you are right. Following patchlet ok?
>>
>> Johann
>>
>> * config/avr/libgcc.S (__ctzsi2, __ctzhi2):
>> Map zero to 255.
>
> You'd also delete the COUNT_LEADING_ZEROS_0 definition in longlong.h.
>
> r~
__clzsi2(0) still returns 32 as it does not use ctz. So if
implementation of ctz affects validity of COUNT_LEADING_ZEROS_0 that's
bit confusing...
Johann
next prev parent reply other threads:[~2011-06-17 15:55 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-06-16 6:53 Georg-Johann Lay
2011-06-15 10:46 ` Denis Chertykov
2011-06-15 11:59 ` Georg-Johann Lay
2011-06-16 10:00 ` Georg-Johann Lay
2011-06-16 19:17 ` Richard Henderson
2011-06-17 9:41 ` Georg-Johann Lay
2011-06-17 17:26 ` Richard Henderson
2011-06-17 17:32 ` Georg-Johann Lay [this message]
-- strict thread matches above, loose matches on Subject: below --
2011-06-16 6:49 Georg-Johann Lay
2011-06-16 9:39 ` Ian Lance Taylor
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