[Bug c/79497] New: ICE in extract_insn, at recog.c:2311

["gerhard dot steinmetz dot fortran at t-online dot de" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79497

            Bug ID: 79497
           Summary: ICE in extract_insn, at recog.c:2311
           Product: gcc
           Version: 7.0.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
          Assignee: unassigned at gcc dot gnu.org
          Reporter: gerhard.steinmetz.fortran@t-online.de
  Target Milestone: ---

A test run with option -mcmodel=large hits an ICE for testsuite
file run-gd.c and run-ld.c, down to at least gcc 4.8.


$ gcc-7-20170212 -mcmodel=large -c run-gd.c
run-gd.c: In function 'get_gd':
run-gd.c:12:1: error: unrecognizable insn:
 }
 ^
(call_insn/u 5 2 6 2 (parallel [
            (set (reg:DI 0 ax)
                (call:DI (mem:QI (symbol_ref:DI ("__tls_get_addr")) [0  S1 A8])
                    (const_int 0 [0])))
            (unspec:DI [
                    (symbol_ref:DI ("tls_gd") [flags 0x12] <var_decl
0x2b5d2aa67e10 tls_gd>)
                    (reg/f:DI 7 sp)
                ] UNSPEC_TLS_GD)
        ]) "run-gd.c":11 -1
     (expr_list:REG_EH_REGION (const_int -2147483648 [0xffffffff80000000])
        (nil))
    (nil))
run-gd.c:12:1: internal compiler error: in extract_insn, at recog.c:2311
0xb894d8 _fatal_insn(char const*, rtx_def const*, char const*, int, char
const*)
        ../../gcc/rtl-error.c:108
0xb89509 _fatal_insn_not_found(rtx_def const*, char const*, int, char const*)
        ../../gcc/rtl-error.c:116
0xb56b71 extract_insn(rtx_insn*)
        ../../gcc/recog.c:2311
0x921e7f instantiate_virtual_regs_in_insn
        ../../gcc/function.c:1637
0x921e7f instantiate_virtual_regs
        ../../gcc/function.c:1957
0x921e7f execute
        ../../gcc/function.c:2006