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[Bug bootstrap/15737] [3.5 Regression] <built-in>:1: internal compiler error: in ten_to_ptwo, at real.c:2012
- From: "paolo dot bonzini at polimi dot it" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 31 May 2004 13:42:19 -0000
- Subject: [Bug bootstrap/15737] [3.5 Regression] <built-in>:1: internal compiler error: in ten_to_ptwo, at real.c:2012
- References: <20040530202150.15737.danglin@gcc.gnu.org>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Additional Comments From paolo dot bonzini at polimi dot it 2004-05-31 13:42 -------
Subject: Re: [3.5 Regression] <built-in>:1: internal
compiler error: in ten_to_ptwo, at real.c:2012
> Paolo, the preprocessed source will not help you as this is being compiled with stage2.
Oh, right, so it's a miscompilation and not an ice-on-valid. Anyway,
I've reverted the patch. I hope that Eric Botcazou can provide me with
a testcase because the cleanup in that patch is quite desirable.
I suspect the bug is in the only non-trivial change in the patch, the
factoring of the new function distribute_and_simplify_rtx. In
particular, it may not have shown on i686-pc-linux-gnu because it has no
AND-with-complement instruction (and on PPC because of some combiner
bogosity?!?).
Paolo
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15737