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[Bug tree-optimization/25000] [4.1/4.2 Regression] ICE in coalesce_abnormal_edges, at tree-outof-ssa.c:646
- From: "law at redhat dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 30 Nov 2005 08:55:17 -0000
- Subject: [Bug tree-optimization/25000] [4.1/4.2 Regression] ICE in coalesce_abnormal_edges, at tree-outof-ssa.c:646
- References: <bug-25000-10053@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #6 from law at redhat dot com 2005-11-30 08:55 -------
Subject: Re: [4.1/4.2 Regression] ICE in
coalesce_abnormal_edges, at tree-outof-ssa.c:646
On Mon, 2005-11-28 at 23:26 +0000, janis at gcc dot gnu dot org wrote:
>
> ------- Comment #4 from janis at gcc dot gnu dot org 2005-11-28 23:26 -------
> A regression hunt using the reduced testcase from comment #3 identified the
> following patch:
>
> http://gcc.gnu.org/viewcvs?view=rev&rev=98066
>
> r98066 | law | 2005-04-13 04:29:40 +0000 (Wed, 13 Apr 2005)
As described in an earlier comment, the problem is we were not
properly handling SSA_NAME_OCCURS_IN_ABNORMAL_PHI in tree-ssa-uncprop.c.
The attached patch fixes that oversight. It has been bootstrapped and
regression tested on i686-pc-linux-gnu for both the trunk and the 4.1
branch.
jeff
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25000