See http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32100 -----Original Message----- From: "Yuriy Tsibizov"<Yuriy.Tsibizov_at_gfk.ru> Sent: 27.05.07 00:33:05 To: "kabaev_at_gmail.com"<kabaev_at_gmail.com>, "Yuriy.Tsibizov_at_gfk.ru"<Yuriy.Tsibizov_at_gfk.ru> Cc: "current_at_freebsd.org"<current_at_freebsd.org> Subject: Re: [Regression] snd_emu10k1 doesn't work after GCC 4.2 upgrade Alexander, I've narrowed it down to single function -- emu_vsetup (in sys/dev/sound/pci/emu10k1.c). Without -ftree-vrp it compiles without problems, with it it makes broken code. You can also compare it to the function with the same name in emu10kx.c -- in last file it compiles with or without -ftree-vrp without problems. If you need more info, I can do more research tomorrow. Yuriy. P.S. Many thanks to ssb from #c on RusNet. -----Original Message----- From: "Alexander Kabaev"<kabaev_at_gmail.com> Sent: 26.05.07 23:48:33 To: "Yuriy Tsibizov"<Yuriy.Tsibizov_at_gfk.ru> Cc: "Yuriy.Tsibizov_at_gfk.ru"<Yuriy.Tsibizov_at_gfk.ru>, "ed_at_fxq.nl"<ed_at_fxq.nl>, "current_at_freebsd.org"<current_at_freebsd.org>, "freebsd_at_unixfreunde.de"<freebsd_at_unixfreunde.de> Subject: Re: [Regression] snd_emu10k1 doesn't work after GCC 4.2 upgrade On Sat, 26 May 2007 23:38:58 +0400 "Yuriy Tsibizov" <Yuriy.Tsibizov_at_gfk.ru> wrote: > Alexander, I'm working on it. > The only thing I can say right now, that it's -ftree-vrp that broke > the code -- building with -O -ftree-vrp makes broken binary, while -O > alone does not. > > (sorry for top-posting) Thanks. Ideally should be able to distill the case info a simple preprocessed .i file with just enough code to demonstrate the mis-compilation. I do not have any of the snd_emuXXX cards here myself. -- Alexander KabaevReceived on Sat May 26 2007 - 19:42:14 UTC
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