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Re: [PATCH,RFC] Disallow reordering of x87 insns while scheduling
- From: Andrew Pinski <pinskia at physics dot uc dot edu>
- To: Roger Sayle <roger at eyesopen dot com>
- Cc: "Vladimir N. Makarov" <vmakarov at redhat dot com>, gcc-patches at gcc dot gnu dot org
- Date: Tue, 19 Apr 2005 02:59:05 -0400
- Subject: Re: [PATCH,RFC] Disallow reordering of x87 insns while scheduling
- References: <Pine.LNX.4.44.0504182107570.22733-100000@www.eyesopen.com>
On Apr 18, 2005, at 11:31 PM, Roger Sayle wrote:
Unfortunately, adding the "-ffast-math" flag to gfortran's command
line options results in an ICE in the tree-ssa optimizers that looks
like it's related to garbage collection both with and without my
change.
#0 is_gimple_stmt (t=0xa5a5a5a5) at ../../gcc/gcc/tree-gimple.c:196
That is most likely PR 21048 which is a bug in the imitate use
information
tree-ssa. I can post a work-around for the bug if any wants to as I have
already regression tested on powerpc-darwin with no regression.
-- Pinski