[Bug target/64460] New: ARM ICE on valid code

["joel at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64460

            Bug ID: 64460
           Summary: ARM ICE on valid code
           Product: gcc
           Version: 5.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: joel at gcc dot gnu.org

Created attachment 34367
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=34367&action=edit
Preprocessed RTEMS source which produces the error

Looks like an xscale specific issue at -O2. Doesn't crash at -O1. Worked on the
4.9 branch.


$ arm-rtems4.11-gcc --version
arm-rtems4.11-gcc (GCC) 5.0.0 20141230 (experimental)


$ arm-rtems4.11-gcc -mcpu=xscale -O2 -c gumstix.c 
../../../../../../rtems/c/src/../../cpukit/score/src/objectextendinformation.c:
In function '_Objects_Extend_information':
../../../../../../rtems/c/src/../../cpukit/score/src/objectextendinformation.c:278:1:
internal compiler error: Segmentation fault
 }
 ^
0x93b7af crash_signal
    ../../gcc/gcc/toplev.c:359
0x8e4940 reg_overlap_mentioned_p(rtx_def const*, rtx_def const*)
    ../../gcc/gcc/rtlanal.c:1522
0xc0c44c xscale_sched_adjust_cost
    ../../gcc/gcc/config/arm/arm.c:11497
0xc0c06b arm_adjust_cost
    ../../gcc/gcc/config/arm/arm.c:11947
0xe17ddf dep_cost_1(_dep*, unsigned int)
    ../../gcc/gcc/haifa-sched.c:1513
0xe19547 dep_cost(_dep*)
    ../../gcc/gcc/haifa-sched.c:1532
0xe19547 priority
    ../../gcc/gcc/haifa-sched.c:1683
0xe1963f set_priorities(rtx_insn*, rtx_insn*)
    ../../gcc/gcc/haifa-sched.c:6796
0x8ecdcc compute_priorities()
    ../../gcc/gcc/sched-rgn.c:2940
0x8ef9ed schedule_region
    ../../gcc/gcc/sched-rgn.c:3033
0x8ef9ed schedule_insns()
    ../../gcc/gcc/sched-rgn.c:3431
0x8f00f3 schedule_insns()
    ../../gcc/gcc/sched-rgn.c:3416
0x8f00f3 rest_of_handle_sched
    ../../gcc/gcc/sched-rgn.c:3635
0x8f00f3 execute
    ../../gcc/gcc/sched-rgn.c:3743
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
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