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.fort...@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
