[Bug target/83052] New: ICE in extract_insn, at recog.c:2305 starting from r254560

["marxin at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83052

            Bug ID: 83052
           Summary: ICE in extract_insn, at recog.c:2305 starting from
                    r254560
           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: andi-gcc at firstfloor dot org
  Target Milestone: ---

After Andi's patch we ICE on:

$ gcc /home/marxin/Programming/gcc/gcc/testsuite/gcc.dg/torture/tls/run-ld.c
-mforce-indirect-call
/home/marxin/Programming/gcc/gcc/testsuite/gcc.dg/torture/tls/run-ld.c: In
function ‘get_ld’:
/home/marxin/Programming/gcc/gcc/testsuite/gcc.dg/torture/tls/run-ld.c:13:1:
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_ld") [flags 0x12] <var_decl
0x7f9b58913e10 tls_ld>)
                    (reg/f:DI 7 sp)
                ] UNSPEC_TLS_GD)
        ])
"/home/marxin/Programming/gcc/gcc/testsuite/gcc.dg/torture/tls/run-ld.c":12 -1
     (expr_list:REG_EH_REGION (const_int -2147483648 [0xffffffff80000000])
        (nil))
    (nil))
during RTL pass: vregs
/home/marxin/Programming/gcc/gcc/testsuite/gcc.dg/torture/tls/run-ld.c:13:1:
internal compiler error: in extract_insn, at recog.c:2305
0x5be174 _fatal_insn(char const*, rtx_def const*, char const*, int, char
const*)
        ../../gcc/rtl-error.c:108
0x5be193 _fatal_insn_not_found(rtx_def const*, char const*, int, char const*)
        ../../gcc/rtl-error.c:116
0xb2d9af extract_insn(rtx_insn*)
        ../../gcc/recog.c:2305
0x8dae81 instantiate_virtual_regs_in_insn
        ../../gcc/function.c:1639
0x8dae81 instantiate_virtual_regs
        ../../gcc/function.c:1959
0x8dae81 execute
        ../../gcc/function.c:2008