[Bug rtl-optimization/99332] New: ICE:inreset_sched_cycles_in_current_ebb, at sel-sched.c:7147 with -fprofile-generate -O3 -fselective-scheduling -fselective-scheduling2 -fsel-sched-pipelining

[Bug rtl-optimization/99332] New: ICE:inreset_sched_cycles_in_current_ebb, at sel-sched.c:7147 with -fprofile-generate -O3 -fselective-scheduling -fselective-scheduling2 -fsel-sched-pipelining

[qinzhao at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99332

            Bug ID: 99332
           Summary: ICE:inreset_sched_cycles_in_current_ebb, at
                    sel-sched.c:7147 with -fprofile-generate -O3
                    -fselective-scheduling -fselective-scheduling2
                    -fsel-sched-pipelining
           Product: gcc
           Version: 11.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: rtl-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: qinzhao at gcc dot gnu.org
  Target Milestone: ---

This testing case is reduced from CPU2017 511.povray, it appears on aarch64
with both gcc11 and gcc10:

$ cat t.C
class OStream {
public:
  void printf(...);
};
typedef double VECTOR[3];
enum { X, Y, Z };
typedef struct ot_block_struct OT_BLOCK;
typedef int OT_NODE;
struct ot_block_struct {
  OT_BLOCK *next;
  VECTOR Point, S_Normal;
  VECTOR To_Nearest_Surface;
  short Bounce_Depth;
};
bool ot_write_block(OT_BLOCK *, void *);
bool ot_traverse(OT_NODE *, bool function(OT_BLOCK *, void *), void *handle) {
  bool oksofar;
  OT_BLOCK *this_block;
  while (this_block) {
    function(this_block, handle);
    this_block = this_block->next;
  }
  return oksofar;
}

bool ot_save_tree() {
  int *fd, *root;
  ot_traverse(root, ot_write_block, fd);
}

bool ot_write_block(OT_BLOCK *bl, void *fd) {
  ((OStream *)fd)->printf(
      bl[Z], bl->S_Normal[X] * int(bl->S_Normal[Z] * .5 * 254. + .499999),
      bl[Z], int(bl->To_Nearest_Surface[X]),
      int((bl->To_Nearest_Surface[Y] + 1.) * .5 * 254. + .499999),
      int((bl->To_Nearest_Surface[Z] + 1.) * .5 * 254. + .499999));
  return true;
}

[qzlocal@ca-dev-arm06 bug_2]$ sh t
/data1/qing/Install/latest/bin/g++ -fprofile-generate -O3
-fselective-scheduling -fselective-scheduling2 -fsel-sched-pipelining -c -o t.o
t.C
t.C: In function 'bool ot_save_tree()':
t.C:29:1: warning: no return statement in function returning non-void
[-Wreturn-type]
   29 | }
      | ^
during RTL pass: sched2
t.C:29:1: internal compiler error: in reset_sched_cycles_in_current_ebb, at
sel-sched.c:7147
0x1063387 reset_sched_cycles_in_current_ebb
        ../../latest_gcc/gcc/sel-sched.c:7147
0x1063387 sel_region_target_finish
        ../../latest_gcc/gcc/sel-sched.c:7220
0x1063387 sel_region_finish
        ../../latest_gcc/gcc/sel-sched.c:7276
0x1063387 sel_sched_region(int)
        ../../latest_gcc/gcc/sel-sched.c:7645
0x1063593 run_selective_scheduling()
        ../../latest_gcc/gcc/sel-sched.c:7720
0x103e70b rest_of_handle_sched2
        ../../latest_gcc/gcc/sched-rgn.c:3738
0x103e70b execute
        ../../latest_gcc/gcc/sched-rgn.c:3882
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.

CPU2017 511.povray cannot be compiled on aarch64 due to this bug.

[Bug rtl-optimization/99332] ICE:inreset_sched_cycles_in_current_ebb, at sel-sched.c:7147 with -fprofile-generate -O3 -fselective-scheduling -fselective-scheduling2 -fsel-sched-pipelining

[acoplan at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99332

Alex Coplan <acoplan at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
     Ever confirmed|0                           |1
             Status|UNCONFIRMED                 |NEW
                 CC|                            |acoplan at gcc dot gnu.org
   Last reconfirmed|                            |2021-04-21

--- Comment #1 from Alex Coplan <acoplan at gcc dot gnu.org> ---
Confirmed on trunk. I can't reproduce it on GCC 10.

[Bug rtl-optimization/99332] ICE:inreset_sched_cycles_in_current_ebb, at sel-sched.c:7147 with -fprofile-generate -O3 -fselective-scheduling -fselective-scheduling2 -fsel-sched-pipelining

[acoplan at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99332

--- Comment #2 from Alex Coplan <acoplan at gcc dot gnu.org> ---
FWIW, the testcase starts ICEing with
r11-5171-g1d77928fc49b4f2487fd78db26bbebd00f881414 - I guess it's latent

[Bug rtl-optimization/99332] [11/12 Regression] ICE:inreset_sched_cycles_in_current_ebb, at sel-sched.c:7147 with -fprofile-generate -O3 -fselective-scheduling -fselective-scheduling2 -fsel-sched-pipelining

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99332

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |11.2

[Bug rtl-optimization/99332] [11/12 Regression] ICE:inreset_sched_cycles_in_current_ebb, at sel-sched.c:7147 with -fprofile-generate -O3 -fselective-scheduling -fselective-scheduling2 -fsel-sched-pipelining

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99332

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|11.2                        |11.3

--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
GCC 11.2 is being released, retargeting bugs to GCC 11.3

[Bug rtl-optimization/99332] [11/12 Regression] ICE:in reset_sched_cycles_in_current_ebb, at sel-sched.c:7147 with -fprofile-generate -O3 -fselective-scheduling -fselective-scheduling2 -fsel-sched-pipelining

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99332

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Last reconfirmed|2021-04-21 00:00:00         |2022-1-17
            Summary|[11/12 Regression]          |[11/12 Regression] ICE:in
                   |ICE:inreset_sched_cycles_in |reset_sched_cycles_in_curre
                   |_current_ebb, at            |nt_ebb, at sel-sched.c:7147
                   |sel-sched.c:7147 with       |with -fprofile-generate -O3
                   |-fprofile-generate -O3      |-fselective-scheduling
                   |-fselective-scheduling      |-fselective-scheduling2
                   |-fselective-scheduling2     |-fsel-sched-pipelining
                   |-fsel-sched-pipelining      |
           Priority|P3                          |P2

--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
Re-confirmed on trunk.

[Bug rtl-optimization/99332] [11/12 Regression] ICE:in reset_sched_cycles_in_current_ebb, at sel-sched.c:7147 with -fprofile-generate -O3 -fselective-scheduling -fselective-scheduling2 -fsel-sched-pipelining

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99332

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|11.3                        |11.4

--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
GCC 11.3 is being released, retargeting bugs to GCC 11.4.

[Bug rtl-optimization/99332] [11/12/13/14 Regression] ICE:in reset_sched_cycles_in_current_ebb, at sel-sched.c:7147 with -fprofile-generate -O3 -fselective-scheduling -fselective-scheduling2 -fsel-sched-pipelining

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99332

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|11.4                        |11.5

--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 11.4 is being released, retargeting bugs to GCC 11.5.

[Bug rtl-optimization/99332] [11/12/13/14 Regression] ICE:in reset_sched_cycles_in_current_ebb, at sel-sched.c:7147 with -fprofile-generate -O3 -fselective-scheduling -fselective-scheduling2 -fsel-sched-pipelining

[law at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99332

Jeffrey A. Law <law at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |law at gcc dot gnu.org
           Priority|P2                          |P4