Re: [PATCH, ARM] (commited) attribute target (thumb,arm) [4/6]

[Christian Bruel <christian.bruel@st.com>]

On 06/15/2015 12:00 PM, James Greenhalgh wrote:
> On Wed, Jun 10, 2015 at 08:57:37AM +0100, Christian Bruel wrote:
>> Hi,
>>
>> Commited [4/6] as attached (r224314)
>>
>> thanks
>>
>> Christian
>>
>> On 06/08/2015 11:26 AM, Ramana Radhakrishnan wrote:
>>> On 08/06/15 09:45, Christian Bruel wrote:
>>>>
>>>> do you have other feedbacks for the remaining parts ?
>>>>
>>>> many thanks
>>>>
>>>
>>> This is OK, thanks.
>>>
>>> Ramana
>
> Hi Christian,
>
> This patch is causing an ICE for me in my arm-none-linux-gnueabihf testing.
> It looks like something isn't saving/restoring/initialising data
> structures needed for IRA.
>
> I've raised https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66541 , the bug
> looks very similar to pr64047
> ( https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64047 ).
>
> Thanks,
> James
>


Hi James,

OK, I'll have a look. pr52429.c is reported as UNSUPPORTED with my runs 
of arm-none-eabi (no threads), but I can reproduce with a manual run.

Cheers

Christian

> ---
> .../gcc/cc1 bug.c -O2  -ftree-parallelize-loops=4  -O2 -flto  -fno-use-linker-plugin  -ftree-parallelize-loops=4 -o pr52429.s
>
>   foo
> Analyzing compilation unit
> Performing interprocedural optimizations
>   <*free_lang_data> <visibility> <build_ssa_passes> <opt_local_passes> <free-inline-summary> <whole-program> <profile_estimate> <icf> <devirt> <cp> <inline> <pure-const> <static-var> <single-use> <comdats>Assembling functions:
>   foo
> .../gcc/testsuite/gcc.dg/torture/pr52429.c: In function ‘foo’:
> .../gcc/testsuite/gcc.dg/torture/pr52429.c:11:1: internal compiler error: Segmentation fault
>     int i;
>   ^
> 0xafa15f crash_signal
> 	.../gcc/toplev.c:369
> 0x97c2b4 record_operand_costs
> 	.../gcc/ira-costs.c:1305
> 0x97c7a4 scan_one_insn
> 	.../gcc/ira-costs.c:1483
> 0x97c7a4 process_bb_for_costs
> 	.../gcc/ira-costs.c:1604
> 0x97d715 find_costs_and_classes
> 	.../gcc/ira-costs.c:1711
> 0x97ec3a ira_set_pseudo_classes(bool, _IO_FILE*)
> 	.../gcc/ira-costs.c:2245
> 0xffd743 alloc_global_sched_pressure_data
> 	.../gcc/haifa-sched.c:7119
> 0xffd743 sched_init()
> 	.../gcc/haifa-sched.c:7269
> 0xffebcf haifa_sched_init()
> 	.../gcc/haifa-sched.c:7281
> 0xaab8dc schedule_insns
> 	.../gcc/sched-rgn.c:3411
> 0xaac0b3 schedule_insns
> 	.../gcc/sched-rgn.c:3405
> 0xaac0b3 rest_of_handle_sched
> 	.../gcc/sched-rgn.c:3624
> 0xaac0b3 execute
> 	.../gcc/sched-rgn.c:3732
> Please submit a full bug report,
> with preprocessed source if appropriate.
> Please include the complete backtrace with any bug report.
> See <http://gcc.gnu.org/bugs.html> for instructions.
>