https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94758
Bug ID: 94758 Summary: ICE: in extract_insn, at recog.c:2310 on hppa64 with __thread variable Product: gcc Version: 10.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: target Assignee: unassigned at gcc dot gnu.org Reporter: ibuclaw at gdcproject dot org Target Milestone: --- Tested with 7.5.0, 8.4.0, 9.2.1, and 10.0.1, all give out the same error. --- __thread int x; int main() { x = 0; } --- test.c: In function ‘main’: test.c:6:1: error: unrecognisable insn: 6 | } | ^ (insn 6 3 7 2 (set (reg:DI 69) (unspec:SI [ (const_int 0 [0]) ] UNSPEC_TP)) "test.c":5:7 -1 (nil)) during RTL pass: vregs test.c:6:1: internal compiler error: in extract_insn, at recog.c:2294 0x6491e5 _fatal_insn(char const*, rtx_def const*, char const*, int, char const*) ../../gcc/rtl-error.c:108 0x649201 _fatal_insn_not_found(rtx_def const*, char const*, int, char const*) ../../gcc/rtl-error.c:116 0x646e97 extract_insn(rtx_insn*) ../../gcc/recog.c:2294 0xa5afc3 instantiate_virtual_regs_in_insn ../../gcc/function.c:1607 0xa5afc3 instantiate_virtual_regs ../../gcc/function.c:1977 0xa5afc3 execute ../../gcc/function.c:2026 Please submit a full bug report, with preprocessed source if appropriate. Please include the complete backtrace with any bug report. See <https://gcc.gnu.org/bugs/> for instructions.