https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78227
Bug ID: 78227 Summary: ICE: unrecognizable insn: in extract_insn, at recog.c:2311 with -mavx512bw Product: gcc Version: 7.0 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: --- Host: x86_64-pc-linux-gnu Target: x86_64-pc-linux-gnu Build: x86_64-pc-linux-gnu Created attachment 39974 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=39974&action=edit reduced testcase Compiler output: $ x86_64-pc-linux-gnu-gcc -mavx512bw testcase.c testcase.c: In function 'foo': testcase.c:7:1: error: unrecognizable insn: } ^ (insn 8 7 9 2 (set (reg:V32HI 87 [ _2 ]) (unspec:SI [ (reg:V32HI 90) (reg:V32HI 89) ] UNSPEC_MASKED_GT)) "testcase.c":6 -1 (nil)) testcase.c:7:1: internal compiler error: in extract_insn, at recog.c:2311 0xb62d03 _fatal_insn(char const*, rtx_def const*, char const*, int, char const*) /repo/gcc-trunk/gcc/rtl-error.c:108 0xb62d9b _fatal_insn_not_found(rtx_def const*, char const*, int, char const*) /repo/gcc-trunk/gcc/rtl-error.c:116 0xb18967 extract_insn(rtx_insn*) /repo/gcc-trunk/gcc/recog.c:2311 0x8ca4bd instantiate_virtual_regs_in_insn /repo/gcc-trunk/gcc/function.c:1581 0x8ca4bd instantiate_virtual_regs /repo/gcc-trunk/gcc/function.c:1948 0x8ca4bd execute /repo/gcc-trunk/gcc/function.c:1997 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. $ x86_64-pc-linux-gnu-gcc -v Using built-in specs. COLLECT_GCC=/repo/gcc-trunk/binary-latest-amd64/bin/x86_64-pc-linux-gnu-gcc COLLECT_LTO_WRAPPER=/repo/gcc-trunk/binary-trunk-241681-checking-yes-rtl-df-extra-nographite-amd64/bin/../libexec/gcc/x86_64-pc-linux-gnu/7.0.0/lto-wrapper Target: x86_64-pc-linux-gnu Configured with: /repo/gcc-trunk//configure --enable-languages=c,c++ --enable-valgrind-annotations --disable-nls --enable-checking=yes,rtl,df,extra --without-cloog --without-ppl --without-isl --build=x86_64-pc-linux-gnu --host=x86_64-pc-linux-gnu --target=x86_64-pc-linux-gnu --with-ld=/usr/bin/x86_64-pc-linux-gnu-ld --with-as=/usr/bin/x86_64-pc-linux-gnu-as --disable-libstdcxx-pch --prefix=/repo/gcc-trunk//binary-trunk-241681-checking-yes-rtl-df-extra-nographite-amd64 Thread model: posix gcc version 7.0.0 20161029 (experimental) (GCC)