https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98601
Bug ID: 98601
Summary: aarch64: ICE in rtx_addr_can_trap_p_1, at
rtlanal.c:467
Product: gcc
Version: 11.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: rtl-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: acoplan at gcc dot gnu.org
Target Milestone: ---
The following fails:
$ cat test.c
void a() {
void *b;
asm("" : "=Q"(*b));
}
$ aarch64-elf-gcc -c test.c -O
test.c: In function 'a':
test.c:3:17: warning: dereferencing 'void *' pointer
3 | asm("" : "=Q"(*b));
| ^~
during RTL pass: cprop_hardreg
test.c:4:1: internal compiler error: in rtx_addr_can_trap_p_1, at rtlanal.c:467
4 | }
| ^
0xd61f35 rtx_addr_can_trap_p_1
/home/alecop01/toolchain/src/gcc/gcc/rtlanal.c:467
0xd626ac may_trap_p_1(rtx_def const*, unsigned int)
/home/alecop01/toolchain/src/gcc/gcc/rtlanal.c:3182
0xd62918 may_trap_p_1(rtx_def const*, unsigned int)
/home/alecop01/toolchain/src/gcc/gcc/rtlanal.c:3282
0xd629cd may_trap_p(rtx_def const*)
/home/alecop01/toolchain/src/gcc/gcc/rtlanal.c:3301
0xd2de10 copyprop_hardreg_forward_1
/home/alecop01/toolchain/src/gcc/gcc/regcprop.c:789
0xd2eb9a cprop_hardreg_bb
/home/alecop01/toolchain/src/gcc/gcc/regcprop.c:1302
0xd2ee2a execute
/home/alecop01/toolchain/src/gcc/gcc/regcprop.c:1367
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.
