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Re: [tree-ssa] Miscompilation (SIGSEGV) with -ffast-math (!?)
- From: law at redhat dot com
- To: Richard Guenther <rguenth at tat dot physik dot uni-tuebingen dot de>
- Cc: "gcc at gcc dot gnu dot org" <gcc at gcc dot gnu dot org>
- Date: Mon, 23 Feb 2004 21:00:23 -0700
- Subject: Re: [tree-ssa] Miscompilation (SIGSEGV) with -ffast-math (!?)
- Reply-to: law at redhat dot com
In message <403A0162.2070207@tat.physik.uni-tuebingen.de>, Richard Guenther wri
tes:
>My favorite testcase is miscompiled by g++-ssa (GCC) 3.5-tree-ssa
>20040220 (merged 20040211) causing it to segfault when using -O2
>-ffast-math as opposed to -O2 which is fine (cmdline params "-n 10").
Note I'm not getting the segfault. However, I was able to fix the
insane compile-time regression -- we were spending an absurd amount of
time walking page table lists in ggc_free.
jeff