https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71916
Jakub Jelinek changed:
What|Removed |Added
CC||jakub at gcc dot gnu.org
--- Comment
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71916
--- Comment #13 from Jakub Jelinek ---
This looks like a bug in handling of __builtin_unreachable (in RTL basic blocks
without successors) during cross-jumping in jump2 pass.
In *.csa there are 2 such basic blocks in the IL, but in *.jump2 only
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71916
--- Comment #12 from Martin Liška ---
Created attachment 38932
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=38932=edit
--dbg-cnt="registered_jump_thread:4" dump
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71916
--- Comment #11 from Martin Liška ---
Created attachment 38931
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=38931=edit
--dbg-cnt="registered_jump_thread:3" dump
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71916
--- Comment #10 from Martin Liška ---
Couple of observations:
1) the second test-case triggers undefined behavior in:
g[i] = 9;
/home/marxin/Programming/testcases/pr71916-2-original.c:20:8: runtime error:
index 4 out of bounds for type
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71916
--- Comment #9 from Qirun Zhang ---
(In reply to Martin Liška from comment #7)
> Hm, the second test-case works fine with r233209, but started to fail with
> r236831:
>
> Author: law
> Date: Fri May
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71916
--- Comment #8 from Richard Henderson ---
(gdb) call debug_cfi_row(cur_row)
.cfi_def_cfa 7, 16
.cfi_offset 3, -16
.cfi_offset 16, -8
(gdb) call debug_cfi_row(ti->beg_row)
.cfi_def_cfa 7, 8
.cfi_offset 16,
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71916
--- Comment #7 from Martin Liška ---
Hm, the second test-case works fine with r233209, but started to fail with
r236831:
Author: law
Date: Fri May 27 16:32:38 2016 +
*
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71916
Richard Biener changed:
What|Removed |Added
CC||rth at gcc dot gnu.org
--- Comment #6
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71916
--- Comment #5 from Qirun Zhang ---
(In reply to Qirun Zhang from comment #4)
> (In reply to rguent...@suse.de from comment #3)
> > On Tue, 19 Jul 2016, marxin at gcc dot gnu.org wrote:
> >
> > >
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71916
--- Comment #4 from Qirun Zhang ---
(In reply to rguent...@suse.de from comment #3)
> On Tue, 19 Jul 2016, marxin at gcc dot gnu.org wrote:
>
> > https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71916
> >
> > Martin Liška changed:
> >
> >
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71916
--- Comment #3 from rguenther at suse dot de ---
On Tue, 19 Jul 2016, marxin at gcc dot gnu.org wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71916
>
> Martin Liška changed:
>
>What|Removed |Added
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71916
Martin Liška changed:
What|Removed |Added
CC||rguenth at gcc dot gnu.org
--- Comment
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71916
Richard Biener changed:
What|Removed |Added
Target Milestone|--- |6.2
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71916
Martin Liška changed:
What|Removed |Added
Keywords||ice-on-valid-code
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