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[Bug middle-end/18424] 3.4.3 ~6x+ performance regression vs 3.3.1, constant trees not being computed.
- From: "ericw at evcohs dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 11 Nov 2004 16:29:58 -0000
- Subject: [Bug middle-end/18424] 3.4.3 ~6x+ performance regression vs 3.3.1, constant trees not being computed.
- References: <20041111023501.18424.schlie@comcast.net>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Additional Comments From ericw at evcohs dot com 2004-11-11 16:29 -------
Subject: Re: 3.4.3 ~6x+ performance regression vs 3.3.1,
constant trees not being computed.
pinskia at gcc dot gnu dot org wrote:
>------- Additional Comments From pinskia at gcc dot gnu dot org 2004-11-11 02:52 -------
>or the default for -mint8 changed.
>
>
>
The size of long has always stayed at 32 bits.
The default sizes for -mint8 *might* have changed. I know that Svein
Seldal corrected a problem with the size of long with -mint8, but I
thought that was on HEAD, i.e. for 4.0.0, not necessarily on 3.4.3. But
I could be wrong. For reference:
Normal:
char = 8 bits
int = 16 bits
long = 32 bits
With -mint8 (on 4.0.0 IIRC)
char = 8 bits
int = 8 bits
long = 16 bits
Eric
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18424