https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104001
Bug ID: 104001
Summary: [12 Regression] ICE in extract_insn, at recog.c:2769
since
r12-6538-g5f19303ada7db92c155332e7ba317233ca05946b
Product: gcc
Version: 12.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: marxin at gcc dot gnu.org
CC: haochen.jiang at intel dot com
Target Milestone: ---
The following crashes:
$ cat math.ii
long select_mask, select_from0, select_from1, bigint_cnd_abs_x_0,
bigint_cnd_abs_size___trans_tmp_1 =
select_from0 & select_mask | select_from1 & ~select_mask;
$ g++ math.ii -c -march=znver1 -O2 -fmax-errors=1
math.ii: In function ‘(static initializers for math.ii)’:
math.ii:3:65: error: unrecognizable insn:
3 | select_from0 & select_mask | select_from1 & ~select_mask;
| ^
(insn 15 14 0 2 (parallel [
(set (mem/c:DI (symbol_ref:DI ("bigint_cnd_abs_size___trans_tmp_1")
[flags 0x2] <var_decl 0x7ffff7fb7f30 bigint_cnd_abs_size___trans_tmp_1>) [1
bigint_cnd_abs_size___trans_tmp_1+0 S8 A64])
(ior:DI (reg:DI 92)
(reg:DI 93)))
(clobber (reg:CC 17 flags))
]) "math.ii":3:36 -1
(expr_list:REG_DEAD (reg:DI 93)
(expr_list:REG_DEAD (reg:DI 92)
(expr_list:REG_UNUSED (reg:CC 17 flags)
(nil)))))
during RTL pass: ira
math.ii:3:65: internal compiler error: in extract_insn, at recog.c:2769
0x218a6a8 _fatal_insn(char const*, rtx_def const*, char const*, int, char
const*)
/home/marxin/Programming/gcc/gcc/rtl-error.c:108
0x218a6ca _fatal_insn_not_found(rtx_def const*, char const*, int, char const*)
/home/marxin/Programming/gcc/gcc/rtl-error.c:116
0x21584d3 extract_insn(rtx_insn*)
/home/marxin/Programming/gcc/gcc/recog.c:2769
0x1f4bb13 ira_remove_insn_scratches(rtx_insn*, bool, _IO_FILE*, rtx_def*
(*)(rtx_def*))
/home/marxin/Programming/gcc/gcc/ira.c:5350
0x1f4cd3e remove_scratches
/home/marxin/Programming/gcc/gcc/ira.c:5394
0x1f4cd3e ira
/home/marxin/Programming/gcc/gcc/ira.c:5718
0x1f4cd3e execute
/home/marxin/Programming/gcc/gcc/ira.c:6077
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.
