https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70406
Bug ID: 70406
Summary: ICE: in extract_insn, at recog.c:2287 (unrecognizable
insn) with -mtune=pentium2 -mavx512f
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: zsojka at seznam dot cz
Target Milestone: ---
Target: i686-pc-linux-gnu
Compiler output:
$ i686-pc-linux-gnu-gcc -O -mtune=pentium2 -mavx512f testcase.c
testcase.c: In function 'foo':
testcase.c:9:1: error: unrecognizable insn:
}
^
(insn 39 33 40 2 (set (reg/v:QI 1 dx [orig:89 i ] [89])
(not:HI (reg/v:QI 1 dx [orig:89 i ] [89]))) testcase.c:6 -1
(nil))
testcase.c:9:1: internal compiler error: in extract_insn, at recog.c:2287
0xb37078 _fatal_insn(char const*, rtx_def const*, char const*, int, char
const*)
/repo/gcc-trunk/gcc/rtl-error.c:108
0xb37108 _fatal_insn_not_found(rtx_def const*, char const*, int, char const*)
/repo/gcc-trunk/gcc/rtl-error.c:116
0xaec618 extract_insn(rtx_insn*)
/repo/gcc-trunk/gcc/recog.c:2287
0xaec6c7 extract_insn_cached(rtx_insn*)
/repo/gcc-trunk/gcc/recog.c:2178
0x85140d cleanup_subreg_operands(rtx_insn*)
/repo/gcc-trunk/gcc/final.c:3104
0xae7ffa split_insn
/repo/gcc-trunk/gcc/recog.c:2901
0xaf03e7 split_all_insns()
/repo/gcc-trunk/gcc/recog.c:2955
0xaf04d8 rest_of_handle_split_after_reload
/repo/gcc-trunk/gcc/recog.c:3891
0xaf04d8 execute
/repo/gcc-trunk/gcc/recog.c:3920
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
Tested revisions:
trunk r234391 - FAIL
5-branch r234412 - FAIL
4_9-branch r234243 - FAIL
