https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67143
Bug ID: 67143
Summary: [5/6 Regression] ICE (could not split insn) on
aarch64-linux-gnu
Product: gcc
Version: 5.2.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: doko at gcc dot gnu.org
Target Milestone: ---
seen when building mysql trunk using trunk r226068, and gcc-5-branch r226354:
$ cat btr0btr.ii
long a, c;
bool b;
int d;
void ut_dbg_assertion_failed() __attribute__((noreturn));
long dict_index_is_spatial(int *);
void btr_block_get_func(char *);
long btr_page_get_level_low(unsigned char *);
void btr_validate_level(long p1, bool) {
unsigned char *e;
while (p1 != btr_page_get_level_low(e)) {
if (__builtin_expect(b, 0))
ut_dbg_assertion_failed();
if (dict_index_is_spatial(&d))
while (c != 5535) {
__sync_add_and_fetch(&a, 536870912);
btr_block_get_func("");
}
}
for (long i; i; ++i)
btr_validate_level(-i, true);
}
$ g++ -Wno-write-strings -c -g -O3 btr0btr.ii
btr0btr.ii: In function 'void btr_validate_level(long int, bool)':
btr0btr.ii:21:1: error: could not split insn
}
^
(insn 300 298 303 (parallel [
(set (mem/v:DI (reg/f:DI 0 x0 [234]) [-1 S8 A64])
(unspec_volatile:DI [
(plus:DI (mem/v:DI (reg/f:DI 0 x0 [234]) [-1 S8 A64])
(const_int 536870912 [0x20000000]))
(const_int 5 [0x5])
] UNSPECV_ATOMIC_OP))
(clobber (reg:CC 66 cc))
(clobber (reg:DI 1 x1 [490]))
(clobber (reg:SI 2 x2 [491]))
]) btr0btr.ii:15 2451 {atomic_adddi}
(expr_list:REG_DEAD (reg/f:DI 0 x0 [234])
(expr_list:REG_UNUSED (reg:CC 66 cc)
(expr_list:REG_UNUSED (reg:SI 2 x2 [491])
(expr_list:REG_UNUSED (reg:DI 1 x1 [490])
(nil))))))
btr0btr.ii:21:1: internal compiler error: in final_scan_insn, at final.c:3020
0x9eadbf _fatal_insn(char const*, rtx_def const*, char const*, int, char
const*)
../../src/gcc/rtl-error.c:110
0x80dfc7 final_scan_insn(rtx_insn*, _IO_FILE*, int, int, int*)
../../src/gcc/final.c:3020
0x80e287 final(rtx_insn*, _IO_FILE*, int)
../../src/gcc/final.c:2089
0x80e78f rest_of_handle_final
../../src/gcc/final.c:4488
0x80e78f execute
../../src/gcc/final.c:4563
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
