https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105587
Bug ID: 105587
Summary: [13 Regression] ICE in extract_insn, at recog.cc:2791
(error: unrecognizable insn)
Product: gcc
Version: 13.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: vsevolod.livinskiy at gmail dot com
Target Milestone: ---
Link to the Compiler Explorer: https://godbolt.org/z/bboxEaWWx
Reproducer:
extern short arr_108[][4][2][24][12], arr_110[][4][2][24][12];
void test() {
for (unsigned a = 0; a < 2; a += 2)
for (unsigned b = 4; b < 22; b++)
for (int c = 1; c < 11; c++)
arr_110[0][0][a][b][c] = (unsigned char)arr_108[0][0][a][b][c];
}
Error:
>$ g++ -O3 -c func.cpp
func.cpp: In function 'void test()':
func.cpp:7:1: error: unrecognizable insn:
7 | }
| ^
(insn 18 17 19 2 (set (reg:V1TI 202)
(ashift:V1TI (subreg:V1TI (reg:V8HI 117 [ vect__15.12 ]) 0)
(const_int 4294967264 [0xffffffe0]))) "func.cpp":6:70 -1
(nil))
during RTL pass: vregs
func.cpp:7:1: internal compiler error: in extract_insn, at recog.cc:2791
0x85ea0e _fatal_insn(char const*, rtx_def const*, char const*, int, char
const*)
/testing/gcc/gcc_src_master/gcc/rtl-error.cc:108
0x85ea30 _fatal_insn_not_found(rtx_def const*, char const*, int, char const*)
/testing/gcc/gcc_src_master/gcc/rtl-error.cc:116
0x85cf23 extract_insn(rtx_insn*)
/testing/gcc/gcc_src_master/gcc/recog.cc:2791
0xecdac5 instantiate_virtual_regs_in_insn
/testing/gcc/gcc_src_master/gcc/function.cc:1611
0xecdac5 instantiate_virtual_regs
/testing/gcc/gcc_src_master/gcc/function.cc:1985
0xecdac5 execute
/testing/gcc/gcc_src_master/gcc/function.cc:2034
Please submit a full bug report, with preprocessed source (by using
-freport-bug).
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
gcc version 13.0.0 20220512 (7f78783dbedca0183d193e475262ca3c489fd365)
