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

[James Greenhalgh <james.greenhalgh@arm.com>]

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

---
.../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.