https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79951
Bug ID: 79951 Summary: ICE in extract_insn, at recog.c:2311 on ppc64le with -mno-cmpb 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: marxin at gcc dot gnu.org Target Milestone: --- Host: x86_64-linux-gnu Target: ppc64le-linux-gnu Following test-case ICE with cross compiler (on x86_64-linux-gnu): $ ppc64le-linux-gnu-gcc /home/marxin/Programming/gcc/gcc/testsuite/gcc.dg/tree-ssa/backprop-5.c -mno-cmpb /home/marxin/Programming/gcc/gcc/testsuite/gcc.dg/tree-ssa/backprop-5.c: In function ‘testf’: /home/marxin/Programming/gcc/gcc/testsuite/gcc.dg/tree-ssa/backprop-5.c:16:1: error: unrecognizable insn: TEST_FUNCTION (float, f) ^~~~~~~~~~~~~ (insn 13 12 14 2 (set (reg:SF 164) (unspec:SF [ (reg:SF 165) (reg:SF 166) ] UNSPEC_COPYSIGN)) "/home/marxin/Programming/gcc/gcc/testsuite/gcc.dg/tree-ssa/backprop-5.c":16 -1 (nil)) /home/marxin/Programming/gcc/gcc/testsuite/gcc.dg/tree-ssa/backprop-5.c:16:1: internal compiler error: in extract_insn, at recog.c:2311 0xb08718 _fatal_insn(char const*, rtx_def const*, char const*, int, char const*) .././../gcc/rtl-error.c:108 0xb08749 _fatal_insn_not_found(rtx_def const*, char const*, int, char const*) .././../gcc/rtl-error.c:116 0xada041 extract_insn(rtx_insn*) .././../gcc/recog.c:2311 0x89dad3 instantiate_virtual_regs_in_insn .././../gcc/function.c:1589 0x89dad3 instantiate_virtual_regs .././../gcc/function.c:1957 0x89dad3 execute .././../gcc/function.c:2006