https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85196
Bug ID: 85196 Summary: [6/7 regression] ICE in extract_insn, at recog.c:2311: unrecognizable insn Product: gcc Version: 8.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: middle-end Assignee: unassigned at gcc dot gnu.org Reporter: ro at gcc dot gnu.org CC: ebotcazou at gcc dot gnu.org Target Milestone: --- Target: sparc-sun-solaris2.* Created attachment 43841 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43841&action=edit reduced testcase: Unified_cpp_js_src10.ii The attached testcase, reduced from mozjs-38.0.0 js/src/Unified_cpp_js_src10.cpp, ICEs on 64-bit Solaris/SPARC: $ cc1plus -fpreprocessed Unified_cpp_js_src10.ii -mptr64 -mstack-bias -mno-v8plus -mcpu=v9 -quiet -m64 -O -w -fPIC -fpermissive Unified_cpp_js_src10.ii: In function 'int ba()': Unified_cpp_js_src10.ii:82:36: error: unrecognizable insn: ba() { an::au<an::v>(ax, ay, &az); } ^ (insn 28 56 29 6 (set (reg/f:DI 122) (const:DI (plus:DI (label_ref:DI 34) (const_int 32 [0x20])))) "Unified_cpp_js_src10.ii":19 -1 (insn_list:REG_LABEL_OPERAND 34 (nil))) Unified_cpp_js_src10.ii:82:36: internal compiler error: in extract_insn, at recog.c:2311 0x908e33 _fatal_insn(char const*, rtx_def const*, char const*, int, char const*) /vol/gcc/src/hg/gcc-7-branch/local/gcc/rtl-error.c:108 0x908e6f _fatal_insn_not_found(rtx_def const*, char const*, int, char const*) /vol/gcc/src/hg/gcc-7-branch/local/gcc/rtl-error.c:116 0x8ceef7 extract_insn(rtx_insn*) /vol/gcc/src/hg/gcc-7-branch/local/gcc/recog.c:2311 0x6f2fef instantiate_virtual_regs_in_insn /vol/gcc/src/hg/gcc-7-branch/local/gcc/function.c:1589 0x6f2fef instantiate_virtual_regs /vol/gcc/src/hg/gcc-7-branch/local/gcc/function.c:1957 0x6f2fef execute /vol/gcc/src/hg/gcc-7-branch/local/gcc/function.c:2006 This only happens on the gcc-6 and 7 branches, while gcc-5 and trunk are fine. Rainer