[Bug tree-optimization/101159] New: [12 Regression] ICE Segmentation fault since r12-1707-ge08a125b208e717f

[marxin at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101159

            Bug ID: 101159
           Summary: [12 Regression] ICE Segmentation fault since
                    r12-1707-ge08a125b208e717f
           Product: gcc
           Version: 12.0
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code
          Severity: normal
          Priority: P3
         Component: tree-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: marxin at gcc dot gnu.org
                CC: crazylht at gmail dot com
  Target Milestone: ---

I see the following ICE:

$ cat bitmap.ii
unsigned long bitmap_single_bit_set_p_count;
long bitmap_single_bit_set_p_elt_0_0;
void bitmap_single_bit_set_p() {
  bitmap_single_bit_set_p_count +=
      __builtin_popcountl(bitmap_single_bit_set_p_elt_0_0);
}

$ g++ bitmap.ii -c -O3
during GIMPLE pass: slp
bitmap.ii: In function ‘void bitmap_single_bit_set_p()’:
bitmap.ii:3:6: internal compiler error: Segmentation fault
    3 | void bitmap_single_bit_set_p() {
      |      ^~~~~~~~~~~~~~~~~~~~~~~
0x117d266 crash_signal
        /home/marxin/Programming/gcc/gcc/toplev.c:327
0x7ffff786139f ???
        ../sysdeps/unix/sysv/linux/sigaction.c:10
0xefd333 tree_class_check(tree_node*, tree_code_class, char const*, int, char
const*)
        /home/marxin/Programming/gcc/gcc/tree.h:3493
0xefd333 direct_optab_supported_p
        /home/marxin/Programming/gcc/gcc/internal-fn.c:3533
0x1d47e57 vect_recog_popcount_pattern
        /home/marxin/Programming/gcc/gcc/tree-vect-patterns.c:1388
0x1d4b18a vect_pattern_recog_1
        /home/marxin/Programming/gcc/gcc/tree-vect-patterns.c:5584
0x1d52ae9 vect_pattern_recog(vec_info*)
        /home/marxin/Programming/gcc/gcc/tree-vect-patterns.c:5742
0x14429eb vect_slp_analyze_bb_1
        /home/marxin/Programming/gcc/gcc/tree-vect-slp.c:5561
0x14429eb vect_slp_region
        /home/marxin/Programming/gcc/gcc/tree-vect-slp.c:5669
0x1444a68 vect_slp_bbs
        /home/marxin/Programming/gcc/gcc/tree-vect-slp.c:5819
0x1444e64 vect_slp_function(function*)
        /home/marxin/Programming/gcc/gcc/tree-vect-slp.c:5905
0x144b35a execute
        /home/marxin/Programming/gcc/gcc/tree-vectorizer.c:1445
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