https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113572
--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
#6 0x00000000015646e1 in aarch64_sve::vector_cst_all_same (v=0x7ffff6be4d20,
step=8) at ../../gcc/config/aarch64/aarch64-sve-builtins.cc:3477
3477 if (!operand_equal_p (VECTOR_CST_ENCODED_ELT (v, i), first_el, 0))
(gdb) p v
$1 = (tree) 0x7ffff6be4d20
(gdb) p debug_tree(v)
<vector_cst 0x7ffff6be4d20
type <vector_type 0x7ffff72f5bd0 __SVBool_t
type <boolean_type 0x7ffff72f5d20 public QI
size <integer_cst 0x7ffff741e048 constant 8>
unit-size <integer_cst 0x7ffff741e060 constant 1>
align:8 warn_if_not_align:0 symtab:0 alias-set -1 canonical-type
0x7ffff72f5d20 precision:1 min <integer_cst 0x7ffff756b6c0 -1> max <integer_cst
0x7ffff756b8d0 0>>
VNx16BI
size <poly_int_cst 0x7ffff72d9e80 type <integer_type 0x7ffff741c0a8
bitsizetype>
constant
elt0: <integer_cst 0x7ffff741e108 constant 16> elt1: <integer_cst
0x7ffff741e108 16>>
unit-size <poly_int_cst 0x7ffff72d9e40 type <integer_type
0x7ffff741c000 sizetype>
constant
elt0: <integer_cst 0x7ffff741e120 constant 2> elt1: <integer_cst
0x7ffff741e120 2>>
align:16 warn_if_not_align:0 symtab:0 alias-set -1 structural-equality
attributes <tree_list 0x7ffff72fa5f0
purpose <identifier_node 0x7ffff72f9b40 SVE type>
value <tree_list 0x7ffff72fa5c8
value <integer_cst 0x7ffff7402f78 constant 0>
chain <tree_list 0x7ffff72fa5a0 value <integer_cst
0x7ffff741e060 1>
chain <tree_list 0x7ffff72fa578
value <identifier_node 0x7ffff72f9aa0 u10__SVBool_t>
chain <tree_list 0x7ffff72fa550 value <identifier_node
0x7ffff72f9af0 svbool_t>>>>>
chain <tree_list 0x7ffff72fa528
purpose <identifier_node 0x7ffff72f9a50 SVE sizeless type>>>
nunits:[16,16]>
constant npatterns:1 nelts-per-pattern:2
elt:0: <integer_cst 0x7ffff756b6c0 type <boolean_type 0x7ffff72f5d20>
constant -1>
elt:1: <integer_cst 0x7ffff756b8d0 type <boolean_type 0x7ffff72f5d20>
constant 0>>
$2 = void
(gdb) p i
$3 = 8
(gdb) p debug_generic_expr(v)
{ -1, 0, ... }
I don't understand what this constant even means. Is it `-1,0` alternating or
is it `-1, 0,` followed by many 0s?
