[Bug tree-optimization/101467] New: [r12 regression] ICE on aarch64 after r12-2324

[Bug tree-optimization/101467] New: [r12 regression] ICE on aarch64 after r12-2324

[clyon at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101467

            Bug ID: 101467
           Summary: [r12 regression] ICE on aarch64 after r12-2324
           Product: gcc
           Version: 12.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: clyon at gcc dot gnu.org
  Target Milestone: ---

I have noticed ICEs on aarch64 between r12-2322 and r12-2329, likely caused by
r12-2324

FAIL: gcc.target/aarch64/sve/peel_ind_1.c (internal compiler error)
FAIL: gcc.target/aarch64/sve/peel_ind_1.c (test for excess errors)
Excess errors:
during GIMPLE pass: vect
/gcc/testsuite/gcc.target/aarch64/sve/peel_ind_1.c:13:1: internal compiler
error: Segmentation fault
0xe060ff crash_signal
        /gcc/toplev.c:328
0xdffae8 get_identifier(char const*)
        /gcc/stringpool.c:97
0x10ddcc9 make_temp_ssa_name
        /gcc/tree-ssanames.h:148
0x10ddcc9 vect_gen_while(gimple**, tree_node*, tree_node*, tree_node*, char
const*)
        /gcc/tree-vect-stmts.c:12002
0x10ddda3 vect_gen_while_not(gimple**, tree_node*, tree_node*, tree_node*)
        /gcc/tree-vect-stmts.c:12015
0x112d138 vect_set_loop_controls_directly
        /gcc/tree-vect-loop-manip.c:632
0x112d138 vect_set_loop_condition_partial_vectors
        /gcc/tree-vect-loop-manip.c:749
0x112d138 vect_set_loop_condition(loop*, _loop_vec_info*, tree_node*,
tree_node*, tree_node*, bool)
        /gcc/tree-vect-loop-manip.c:950
0x1120225 vect_transform_loop(_loop_vec_info*, gimple*)
        /gcc/tree-vect-loop.c:9800
0x115c4d9 try_vectorize_loop_1
        /gcc/tree-vectorizer.c:1104
0x115cf41 vectorize_loops()
        /gcc/tree-vectorizer.c:1243

The full list of ICEs:
    gcc.target/aarch64/sve/peel_ind_1.c (internal compiler error)
    gcc.target/aarch64/sve/peel_ind_2.c (internal compiler error)
    gcc.target/aarch64/sve/peel_ind_3.c (internal compiler error)
    gcc.target/aarch64/sve/peel_ind_4.c (internal compiler error)
    gcc.target/aarch64/sve/pr98119.c (internal compiler error)



When using -mabi=ilp32, there is only one ICE:
FAIL: gcc.dg/vect/pr95570.c (internal compiler error)

[Bug tree-optimization/101467] [r12 regression] ICE on aarch64 after r12-2324

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101467

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |ASSIGNED
     Ever confirmed|0                           |1
           Assignee|unassigned at gcc dot gnu.org      |rguenth at gcc dot gnu.org
   Last reconfirmed|                            |2021-07-16

--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Mine.

[Bug tree-optimization/101467] [12 regression] ICE on aarch64 after r12-2324

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101467

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|[r12 regression] ICE on     |[12 regression] ICE on
                   |aarch64 after r12-2324      |aarch64 after r12-2324
   Target Milestone|---                         |12.0

[Bug tree-optimization/101467] [12 regression] ICE on aarch64 after r12-2324

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101467

--- Comment #2 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Richard Biener <rguenth@gcc.gnu.org>:

https://gcc.gnu.org/g:df0d7486ec9bca8a77ca106d9fbb60f819dd9cec

commit r12-2350-gdf0d7486ec9bca8a77ca106d9fbb60f819dd9cec
Author: Richard Biener <rguenther@suse.de>
Date:   Fri Jul 16 11:17:37 2021 +0200

    tree-optimization/101467 - fix make_temp_ssa_name usage

    My previous change to vect_gen_while introduced paths which call
    make_temp_ssa_name with a NULL name which isn't supported.  The
    following fixes that.

    2021-07-16  Richard Biener  <rguenther@suse.de>

            PR tree-optimization/101467
            * tree-vect-stmts.c (vect_gen_while): Properly guard
            make_temp_ssa_name usage.

[Bug tree-optimization/101467] [12 regression] ICE on aarch64 after r12-2324

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101467

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|---                         |FIXED

--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed.