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* [Bug tree-optimization/103800] New: ICE in vectorizable_phi, at tree-vect-loop.c:7861 with -O3 -march=skylake-avx512
@ 2021-12-22  8:14 vsevolod.livinskij at frtk dot ru
  2021-12-22  8:18 ` [Bug tree-optimization/103800] [12 Regression] ICE in vectorizable_phi, at tree-vect-loop.c:7861 with -O3 pinskia at gcc dot gnu.org
                   ` (6 more replies)
  0 siblings, 7 replies; 8+ messages in thread
From: vsevolod.livinskij at frtk dot ru @ 2021-12-22  8:14 UTC (permalink / raw)
  To: gcc-bugs

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103800

            Bug ID: 103800
           Summary: ICE in vectorizable_phi, at tree-vect-loop.c:7861 with
                    -O3 -march=skylake-avx512
           Product: gcc
           Version: 12.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: vsevolod.livinskij at frtk dot ru
  Target Milestone: ---

Link to the Compiler Explorer: https://godbolt.org/z/bWdof9c8s
Reproducer:
int a;
long b;
extern int c[], d[];
extern bool e[];
void f() {
  if (a)
    ;
  for (;;) {
    for (int g = 2; g; g = a)
      d[g] = 0;
    for (int h = 1; h < 13; h++)
      e[h] = b ? (short)c[4 + h - 1] : c[4 + h - 1];
  }
}


Error:
>$ g++ -O3 -march=skylake-avx512 -c func.cpp
during GIMPLE pass: slp
func.cpp: In function 'void f()':
func.cpp:5:6: internal compiler error: in vectorizable_phi, at
tree-vect-loop.c:7861
    5 | void f() {
      |      ^
0x8bca05 vectorizable_phi(vec_info*, _stmt_vec_info*, gimple**, _slp_tree*,
vec<stmt_info_for_cost, va_heap, vl_ptr>*)
        /testing/gcc/gcc_src_master/gcc/tree-vect-loop.c:7861
0x20abd84 vect_analyze_stmt(vec_info*, _stmt_vec_info*, bool*, _slp_tree*,
_slp_instance*, vec<stmt_info_for_cost, va_heap, vl_ptr>*)
        /testing/gcc/gcc_src_master/gcc/tree-vect-stmts.c:11125
0x14a2186 vect_slp_analyze_node_operations_1
        /testing/gcc/gcc_src_master/gcc/tree-vect-slp.c:4481
0x14a2186 vect_slp_analyze_node_operations
        /testing/gcc/gcc_src_master/gcc/tree-vect-slp.c:4640
0x14a2097 vect_slp_analyze_node_operations
        /testing/gcc/gcc_src_master/gcc/tree-vect-slp.c:4620
0x14a2097 vect_slp_analyze_node_operations
        /testing/gcc/gcc_src_master/gcc/tree-vect-slp.c:4620
0x14a2097 vect_slp_analyze_node_operations
        /testing/gcc/gcc_src_master/gcc/tree-vect-slp.c:4620
0x14a4811 vect_slp_analyze_operations(vec_info*)
        /testing/gcc/gcc_src_master/gcc/tree-vect-slp.c:4879
0x14a9605 vect_slp_analyze_bb_1
        /testing/gcc/gcc_src_master/gcc/tree-vect-slp.c:5817
0x14a9605 vect_slp_region
        /testing/gcc/gcc_src_master/gcc/tree-vect-slp.c:5864
0x14aae33 vect_slp_bbs
        /testing/gcc/gcc_src_master/gcc/tree-vect-slp.c:6056
0x14ab22c vect_slp_function(function*)
        /testing/gcc/gcc_src_master/gcc/tree-vect-slp.c:6144
0x14b1c82 execute
        /testing/gcc/gcc_src_master/gcc/tree-vectorizer.c:1503
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.

GCC version:
gcc version 12.0.0 20211219 (fcbf94a5be9e0c1ecad92da773a6632b86b7f70a) (GCC)

^ permalink raw reply	[flat|nested] 8+ messages in thread
end of thread, other threads:[~2022-01-04 15:52 UTC | newest]

Thread overview: 8+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2021-12-22  8:14 [Bug tree-optimization/103800] New: ICE in vectorizable_phi, at tree-vect-loop.c:7861 with -O3 -march=skylake-avx512 vsevolod.livinskij at frtk dot ru
2021-12-22  8:18 ` [Bug tree-optimization/103800] [12 Regression] ICE in vectorizable_phi, at tree-vect-loop.c:7861 with -O3 pinskia at gcc dot gnu.org
2021-12-22  9:00 ` [Bug tree-optimization/103800] [12 Regression] ICE in vectorizable_phi, at tree-vect-loop.c:7861 with -O3 since r12-5626-g0194d92c35ca8b3a marxin at gcc dot gnu.org
2021-12-22  9:00 ` marxin at gcc dot gnu.org
2022-01-03 13:27 ` rguenth at gcc dot gnu.org
2022-01-04 14:46 ` rguenth at gcc dot gnu.org
2022-01-04 15:52 ` cvs-commit at gcc dot gnu.org
2022-01-04 15:52 ` rguenth at gcc dot gnu.org

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