[Bug c/97746] ice in vect_init_pattern_stmt, at tree-vect-patterns.c:116

[zhendong.su at inf dot ethz.ch via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97746

Zhendong Su <zhendong.su at inf dot ethz.ch> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |zhendong.su at inf dot ethz.ch

--- Comment #1 from Zhendong Su <zhendong.su at inf dot ethz.ch> ---
Another reproducer for the same crash with "-O1 -ftree-slp-vectorize": 

[566] % gcctk -O1 -ftree-slp-vectorize small.c
during GIMPLE pass: slp
small.c: In function ‘d’:
small.c:6:6: internal compiler error: in vect_init_pattern_stmt, at
tree-vect-patterns.c:116
    6 | void d() {
      |      ^
0x18be859 vect_init_pattern_stmt
        ../../gcc-trunk/gcc/tree-vect-patterns.c:115
0x18bfeee vect_set_pattern_stmt
        ../../gcc-trunk/gcc/tree-vect-patterns.c:133
0x18bfeee vect_mark_pattern_stmts
        ../../gcc-trunk/gcc/tree-vect-patterns.c:5327
0x18bfeee vect_pattern_recog_1
        ../../gcc-trunk/gcc/tree-vect-patterns.c:5443
0x18c86e1 vect_pattern_recog(vec_info*)
        ../../gcc-trunk/gcc/tree-vect-patterns.c:5583
0x10054a2 vect_slp_analyze_bb_1
        ../../gcc-trunk/gcc/tree-vect-slp.c:4124
0x10054a2 vect_slp_region
        ../../gcc-trunk/gcc/tree-vect-slp.c:4226
0x1006a8a vect_slp_bbs
        ../../gcc-trunk/gcc/tree-vect-slp.c:4374
0x1006fcc vect_slp_function(function*)
        ../../gcc-trunk/gcc/tree-vect-slp.c:4460
0x10090f2 execute
        ../../gcc-trunk/gcc/tree-vectorizer.c:1437
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.
[567] %
[567] % cat small.c
int a, b;
short c;

extern void f (short*);

void d() {
  short e[2] = {0, 0};
  while (a) {
    f(e);
    int g = 0 || a, h = 8 && c;
    short i = c;
    c = h & g;
    if (b)
      b = g || i;
  }
}