Re: toolchain/58505: GCC 12.4.0 on alpha w/ isl broken at -O2

[Rin Okuyama <rokuyama.rk%gmail.com@localhost>]

The following reply was made to PR toolchain/58505; it has been noted by GNATS.

From: Rin Okuyama <rokuyama.rk%gmail.com@localhost>
To: gnats-bugs%netbsd.org@localhost, mrg%netbsd.org@localhost, gnats-admin%netbsd.org@localhost,
 netbsd-bugs%netbsd.org@localhost, tnn%nygren.pp.se@localhost
Cc: 
Subject: Re: toolchain/58505: GCC 12.4.0 on alpha w/ isl broken at -O2
Date: Wed, 7 Aug 2024 10:19:57 +0900

 I've found this is not a recent regression:
 
 (1) https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84204
 (2) https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84353
 
 Upstream cannot fix it for 6 years from initial report :(
 
 So, we should just disable isl for alpha.
 
 Also, (2) suggests this is not an alpha specific problem.
 Although, I've never observed a similar regression on other
 platforms so far.
 
 Thanks,
 rin
 
 PS
 With isl disabled, I've successfully built release natively
 on my DS10, with MKDEBUG=yes, MKDEBUGLIB=yes, and MKX11=no,
 for 54 hours :)