https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82983
Bug ID: 82983 Summary: [8 Regression] ICE in extract_insn, at recog.c:2305 w/ GFMI Product: gcc Version: 7.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: target Assignee: unassigned at gcc dot gnu.org Reporter: marxin at gcc dot gnu.org CC: jkoval at gcc dot gnu.org, kyukhin at gcc dot gnu.org Target Milestone: --- Following ICEs: $ gcc /home/marxin/Programming/gcc/gcc/testsuite/gcc.target/i386/gfni-4.c /home/marxin/Programming/gcc/gcc/testsuite/gcc.target/i386/gfni-4.c: In function ‘avx512vl_test’: /home/marxin/Programming/gcc/gcc/testsuite/gcc.target/i386/gfni-4.c:16:1: error: unrecognizable insn: } ^ (insn 9 8 10 2 (set (reg:V16QI 91 [ _5 ]) (unspec:V16QI [ (reg:V16QI 90 [ _4 ]) (reg:V16QI 88 [ _2 ]) (const_int 3 [0x3]) ] UNSPEC_GF2P8AFFINEINV)) "/home/marxin/Programming/gcc/gcc/testsuite/gcc.target/i386/gfni-4.c":14 -1 (nil)) during RTL pass: vregs /home/marxin/Programming/gcc/gcc/testsuite/gcc.target/i386/gfni-4.c:16:1: internal compiler error: in extract_insn, at recog.c:2305 0xeb6add _fatal_insn(char const*, rtx_def const*, char const*, int, char const*) ../../gcc/rtl-error.c:108 0xeb6b1e _fatal_insn_not_found(rtx_def const*, char const*, int, char const*) ../../gcc/rtl-error.c:116 0xe58259 extract_insn(rtx_insn*) ../../gcc/recog.c:2305 0xb57803 instantiate_virtual_regs_in_insn ../../gcc/function.c:1591 0xb58cdd instantiate_virtual_regs ../../gcc/function.c:1959 0xb58dac execute ../../gcc/function.c:2008 It's compiled with -mtune=generic -march=x86-64