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Re: ICE in gcc/libgcc2.c:566 (gcc trunk)

From: Hanno Meyer-Thurow <h dot mth at web dot de>
To: Ian Lance Taylor <iant at google dot com>
Cc: gcc at gcc dot gnu dot org
Date: Sun, 11 Feb 2007 17:11:15 +0100
Subject: Re: ICE in gcc/libgcc2.c:566 (gcc trunk)
References: <20070207221818.99e72471.h.mth@web.de> <m3iredmtg1.fsf@localhost.localdomain>

On 07 Feb 2007 15:36:14 -0800
Ian Lance Taylor <iant@google.com> wrote:

> Can anybody else out there recreate this on their x86_64 system?

Not that I could not recreate the segfault but I found a way to hide the
segfault. Instead of optimizing with nocona

	make \
		LDFLAGS="-Wl,-O1 -Wl,--as-needed -Wl,--sort-common" \
		STAGE1_CFLAGS="-O" \
		LIBPATH="/usr/lib/gcj-4.3.0_alpha20070209/lib64" \
		BOOT_CFLAGS=" -O2 -mtune=nocona -march=nocona -pipe -msse3 -mfpmath=sse" \
		bootstrap

optimizing stage2/stage3 c compiler with core2 like

	make \
		LDFLAGS="-Wl,-O1 -Wl,--as-needed -Wl,--sort-common" \
		STAGE1_CFLAGS="-O" \
		LIBPATH="/usr/lib/gcj-4.3.0_alpha20070209/lib64" \
		BOOT_CFLAGS=" -O2 -mtune=core2 -march=core2 -pipe -msse3 -mssse3 -mfpmath=sse" \
		bootstrap

helps here. So, at least one can workaround this now.


Regards,
Hanno

Follow-Ups:
- Re: ICE in gcc/libgcc2.c:566 (gcc trunk)
  - From: H. J. Lu

References:
- Re: ICE in gcc/libgcc2.c:566 (gcc trunk)
  - From: Hanno Meyer-Thurow
- Re: ICE in gcc/libgcc2.c:566 (gcc trunk)
  - From: Ian Lance Taylor

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