https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91102
Bug ID: 91102
Summary: [9/10 Regression] aarch64 ICE on Linux kernel with -Os
starting with r270266
Product: gcc
Version: 9.1.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: jakub at gcc dot gnu.org
Target Milestone: ---
int
foo (long d, long l)
{
register long e asm ("x1") = d;
register long f asm("x2") = l;
asm ("" : : "r" (e), "r" (f));
}
struct T { int i; int j; };
union S { long h; struct T t; };
void
bar (union S b)
{
while (1)
{
union S c = b;
c.t.j++;
b.h = foo (b.h, c.h);
}
}
ICEs with -Os on aarch64-linux starting with r270266:
rh1727453.i: In function ‘bar’:
rh1727453.i:21:1: error: unable to generate reloads for:
21 | }
| ^
(insn 15 14 16 3 (set (reg/v:DI 2 x2 [ f ])
(ior:DI (and:DI (reg/v:DI 1 x1 [ e ])
(const_int 4294967295 [0xffffffff]))
(ashift:DI (subreg:DI (reg:SI 99) 0)
(const_int 32 [0x20])))) "rh1727453.i":5:17 794
{*aarch64_bfidi4_noand}
(expr_list:REG_DEAD (reg:SI 99)
(nil)))
during RTL pass: reload
rh1727453.i:21:1: internal compiler error: in curr_insn_transform, at
lra-constraints.c:3962
0xfa3363 _fatal_insn(char const*, rtx_def const*, char const*, int, char
const*)
../../gcc/rtl-error.c:108
0xe09d9f curr_insn_transform
../../gcc/lra-constraints.c:3962
0xe0d788 lra_constraints(bool)
../../gcc/lra-constraints.c:4978
0xdf5639 lra(_IO_FILE*)
../../gcc/lra.c:2472
0xd9d0c2 do_reload
../../gcc/ira.c:5516
0xd9d550 execute
../../gcc/ira.c:5700
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.
