[Bug target/70016] New: [Regression] pr52429.c fails since r233745

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70016

            Bug ID: 70016
           Summary: [Regression] pr52429.c fails since r233745
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: kyrylo.tkachov at arm dot com
          Reporter: clyon at gcc dot gnu.org
  Target Milestone: ---
            Target: aarch64-none-linux-gnu

Since r233745 ([AArch64] Set TREE_TARGET_GLOBALS in
aarch64_set_current_function when new tree is the default node to recalculate
optab availability), I've noticed that:
FAIL: gcc.dg/torture/pr52429.c   -O2 -flto -fno-use-linker-plugin
-flto-partition=none  (internal compiler error)
on target aarch64-none-linux-gnu

The log contains:
 spawn -ignore SIGHUP
/aci-gcc-fsf/builds/gcc-fsf-gccsrc/obj-aarch64-none-linux-gnu/gcc3/gcc/xgcc
-B/aci-gcc-fsf/builds/gcc-fsf-gccsrc/obj-aarch64-none-linux-gnu/gcc
3/gcc/
/aci-gcc-fsf/sources/gcc-fsf/gccsrc/gcc/testsuite/gcc.dg/torture/pr52429.c
-fno-diagnostics-show-caret -fdiagnostics-color=never -O2 -flto
-fno-use-linker-pl
ugin -flto-partition=none -g -ftree-parallelize-loops=4
-DSTACK_SIZE=16384 -S -o pr52429.s
/aci-gcc-fsf/sources/gcc-fsf/gccsrc/gcc/testsuite/gcc.dg/torture/pr52429.c:
In function 'foo':
/aci-gcc-fsf/sources/gcc-fsf/gccsrc/gcc/testsuite/gcc.dg/torture/pr52429.c:24:1:
internal compiler error: Segmentation fault
0xade075 crash_signal
        /aci-gcc-fsf/sources/gcc-fsf/gccsrc/gcc/toplev.c:335
0x91f88e record_operand_costs
        /aci-gcc-fsf/sources/gcc-fsf/gccsrc/gcc/ira-costs.c:1293
0x91fdba scan_one_insn
        /aci-gcc-fsf/sources/gcc-fsf/gccsrc/gcc/ira-costs.c:1471
0x91fdba process_bb_for_costs
        /aci-gcc-fsf/sources/gcc-fsf/gccsrc/gcc/ira-costs.c:1592
0x9214e7 find_costs_and_classes
        /aci-gcc-fsf/sources/gcc-fsf/gccsrc/gcc/ira-costs.c:1699
0x922552 ira_set_pseudo_classes(bool, _IO_FILE*)
        /aci-gcc-fsf/sources/gcc-fsf/gccsrc/gcc/ira-costs.c:2239
0x1061ecd alloc_global_sched_pressure_data
        /aci-gcc-fsf/sources/gcc-fsf/gccsrc/gcc/haifa-sched.c:7244
0x1061ecd sched_init()
        /aci-gcc-fsf/sources/gcc-fsf/gccsrc/gcc/haifa-sched.c:7394
0x10679ed haifa_sched_init()
        /aci-gcc-fsf/sources/gcc-fsf/gccsrc/gcc/haifa-sched.c:7406
0xa84fae schedule_insns()
        /aci-gcc-fsf/sources/gcc-fsf/gccsrc/gcc/sched-rgn.c:3504
0xa85864 rest_of_handle_sched
        /aci-gcc-fsf/sources/gcc-fsf/gccsrc/gcc/sched-rgn.c:3717
0xa85864 execute
        /aci-gcc-fsf/sources/gcc-fsf/gccsrc/gcc/sched-rgn.c:3825