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