| Summary: | [3.3 regression] ICE in final_scan_insn | ||
|---|---|---|---|
| Product: | gcc | Reporter: | Lars Skovlund <lskovlun> |
| Component: | rtl-optimization | Assignee: | Eric Botcazou <ebotcazou> |
| Status: | RESOLVED FIXED | ||
| Severity: | critical | CC: | barnett2, gcc-bugs, mark, reichelt, skon |
| Priority: | P2 | Keywords: | monitored |
| Version: | 3.3.1 | ||
| Target Milestone: | 3.3.2 | ||
| Host: | i486-pc-linux-gnu | Target: | i486-pc-linux-gnu |
| Build: | i486-pc-linux-gnu | Known to work: | |
| Known to fail: | Last reconfirmed: | 2003-10-04 20:19:14 | |
| Attachments: | bzip2'ed preprocessed failing source file | ||
|
Description
Lars Skovlund
2003-10-04 20:05:17 UTC
Created attachment 4889 [details]
bzip2'ed preprocessed failing source file
Confirmed on the 3.3 branch, a regression from GCC 3.2.3. Here's a reduced example that crashes on i686-pc-linux-gnu
when compiled with "-O" (it *does* compile with "-O2").
=======================================
void foo (double);
void bar (double x, double y)
{
foo (x);
if (y) x = y ? 0 : 1/y;
else if (y) x = y < 1 ? 1 : y;
else x = 1/y < 1 ? 1 : x;
foo (x);
}
=======================================
According to Phil's regression hunter, the regression was introduced in
February:
: Search converges between 2003-02-26-3.3 (#68) and 2003-02-28-3.3 (#69).
Fixing. Subject: Re: [3.3 regression] ICE in
final_scan_insn
On Mon, 2003-10-06 at 09:54, ebotcazou at gcc dot gnu dot org wrote:
> PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.
>
> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12510
>
>
> ebotcazou at gcc dot gnu dot org changed:
>
> What |Removed |Added
> ----------------------------------------------------------------------------
> AssignedTo|unassigned at gcc dot gnu |ebotcazou at gcc dot gnu dot
> |dot org |org
> Status|NEW |ASSIGNED
>
>
> ------- Additional Comments From ebotcazou at gcc dot gnu dot org 2003-10-06 06:54 -------
> Fixing.
I'd actually feel more comfortable with Jakub's patch since it's received a fair amount of testing. I'd approve a backport of his patch. Are you willing to test that out? They are equivalent, but I understand your position so I'll do the backport. Backported patch: http://gcc.gnu.org/ml/gcc-patches/2003-10/msg00636.html Eric, please check this in and close the PR. Thanks! Subject: Bug 12510 CVSROOT: /cvs/gcc Module name: gcc Branch: gcc-3_3-branch Changes by: ebotcazou@gcc.gnu.org 2003-10-09 20:53:40 Modified files: gcc : ChangeLog toplev.c gcc/testsuite : ChangeLog Added files: gcc/testsuite/gcc.dg: 20031009-1.c Log message: PR optimization/12510 Backport from mainline: 2003-09-08 Jakub Jelinek <jakub@redhat.com> * toplev.c (rest_of_compilation): Call split_all_insns before regstack if optimizing but not scheduling after reload. Patches: http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&only_with_tag=gcc-3_3-branch&r1=1.16114.2.775&r2=1.16114.2.776 http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/toplev.c.diff?cvsroot=gcc&only_with_tag=gcc-3_3-branch&r1=1.690.2.22&r2=1.690.2.23 http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/ChangeLog.diff?cvsroot=gcc&only_with_tag=gcc-3_3-branch&r1=1.2261.2.303&r2=1.2261.2.304 http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/gcc.dg/20031009-1.c.diff?cvsroot=gcc&only_with_tag=gcc-3_3-branch&r1=NONE&r2=1.1.2.1 Backported patch applied. *** Bug 12565 has been marked as a duplicate of this bug. *** *** Bug 12621 has been marked as a duplicate of this bug. *** |