https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89290
Bug ID: 89290
Summary: [8/9 Regression] ICE in change_address_1, at
emit-rtl.c:2286
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: gs...@t-online.de
Target Milestone: ---
With options -O0 -mcmodel=large on x86_64-pc-linux-gnu :
$ cat pr56847.c
struct S { long int a, b; } e;
__thread struct S s;
void
foo (void)
{
s = e;
}
$ gcc-7 -c pr56847.c -O0 -mcmodel=large
$ gcc-9-20190210 -c pr56847.c -O2 -mcmodel=large
$ gcc-9-20190210 -c pr56847.c -O0
$
$ gcc-9-20190210 -c pr56847.c -O0 -mcmodel=large
during RTL pass: split2
pr56847.c: In function 'foo':
pr56847.c:8:1: internal compiler error: in change_address_1, at emit-rtl.c:2286
8 | }
| ^
0x7a18d0 change_address_1
../../gcc/emit-rtl.c:2286
0x7a4896 adjust_address_1(rtx_def*, machine_mode, poly_int<1u, long>, int, int,
int, poly_int<1u, long>)
../../gcc/emit-rtl.c:2420
0xd5c619 split_double_mode(machine_mode, rtx_def**, int, rtx_def**, rtx_def**)
../../gcc/config/i386/i386.c:18661
0xd5ca5b ix86_split_to_parts
../../gcc/config/i386/i386.c:25393
0xd671cd ix86_split_long_move(rtx_def**)
../../gcc/config/i386/i386.c:25483
0xf88d20 gen_split_8(rtx_insn*, rtx_def**)
../../gcc/config/i386/i386.md:2267
0x10ccd04 split_10
../../gcc/config/i386/i386.md:9883
0x112b377 split_insns(rtx_def*, rtx_insn*)
../../gcc/config/i386/i386.md:13184
0x7a6331 try_split(rtx_def*, rtx_insn*, int)
../../gcc/emit-rtl.c:3851
0xa00281 split_insn
../../gcc/recog.c:2901
0xa043a2 split_all_insns()
../../gcc/recog.c:3005
0xa044a8 execute
../../gcc/recog.c:3905
