https://gcc.gnu.org/bugzilla/show_bug.cgi?id=126446
Bug ID: 126446
Summary: [12-17 Regression] X86-64: ICE at -O1 -mavx2 during
RTL pass: vregs
Product: gcc
Version: 17.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: xxs_chy at outlook dot com
Target Milestone: ---
Reproducer: https://godbolt.org/z/eGcKxd7M5
Testcase:
#include <stdint.h>
typedef int8_t v4i8 __attribute__((vector_size(4)));
int8_t g28;
void f18()
{
v4i8 bc9;
int64_t v10 = ~2878966870562407444;
bc9[v10] = 0;
g28 = bc9[0];
}
Dump at -O1 -mavx2:
<source>: In function 'f18':
<source>:10:1: error: unrecognizable insn:
10 | }
| ^
(insn 11 10 12 2 (set (reg:V4QI 103)
(vec_merge:V4QI (vec_duplicate:V4QI (reg:QI 104))
(reg:V4QI 103)
(const_int 8796093022208 [0x80000000000]))) "<source>":8:14 -1
(nil))
during RTL pass: vregs
<source>:10:1: internal compiler error: in extract_insn, at recog.cc:2894
0x27cae68 diagnostics::context::diagnostic_impl(rich_location*,
diagnostics::metadata const*, diagnostics::option_id, char const*,
__va_list_tag (*) [1], diagnostics::kind)
???:0
0x27bfaab internal_error(char const*, ...)
???:0
0xa37128 fancy_abort(char const*, int, char const*)
???:0
0x8b2313 _fatal_insn(char const*, rtx_def const*, char const*, int, char
const*)
???:0
0x8b2335 _fatal_insn_not_found(rtx_def const*, char const*, int, char const*)
???:0
