https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98603
Bug ID: 98603
Summary: aarch64: ICE in extract_insn (ira) on asm goto with
bad constraint
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: ---
$ cat test.c
int a() {
int b, c;
asm goto("" : "=R"(b), "=r"(c) : : : d);
d:
}
$ aarch64-elf-gcc -c test.c
test.c: In function 'a':
test.c:3:3: error: impossible constraint in 'asm'
3 | asm goto("" : "=R"(b), "=r"(c) : : : d);
| ^~~
test.c:5:1: error: unrecognizable insn:
5 | }
| ^
(jump_insn 7 2 8 2 (parallel [
(set (reg:SI 93 [ b ])
(asm_operands:SI ("") ("=R") 0 []
[]
[
(label_ref:DI 8)
] test.c:3))
(set (reg:SI 94 [ c ])
(asm_operands:SI ("") ("=r") 1 []
[]
[
(label_ref:DI 8)
] test.c:3))
]) "test.c":3:3 -1
(nil)
-> 8)
during RTL pass: ira
test.c:5:1: internal compiler error: in extract_insn, at recog.c:2760
0xd574db _fatal_insn(char const*, rtx_def const*, char const*, int, char
const*)
/home/alecop01/toolchain/src/gcc/gcc/rtl-error.c:108
0xd574fa _fatal_insn_not_found(rtx_def const*, char const*, int, char const*)
/home/alecop01/toolchain/src/gcc/gcc/rtl-error.c:116
0xd27455 extract_insn(rtx_insn*)
/home/alecop01/toolchain/src/gcc/gcc/recog.c:2760
0xbb4266 ira
/home/alecop01/toolchain/src/gcc/gcc/ira.c:5423
0xbb4266 execute
/home/alecop01/toolchain/src/gcc/gcc/ira.c:5945
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.
