https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86139
ktkachov at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |ktkachov at gcc dot gnu.org,
| |rguenth at gcc dot gnu.org
CC|kyrylo.tkachov at arm dot com |
--- Comment #1 from ktkachov at gcc dot gnu.org ---
I've reproduced an ICE on arm-none-linux-gnueabihf from GCC 6 onwards but
haven't been able to reproduce it on aarch64-none-linux-gnu.
Furthermore, the ICE on arm appears to me in a different place:
during GIMPLE pass: veclower
full.c: In function ‘x’:
full.c:88:6: internal compiler error: Segmentation fault
void x() {
^
0xbd7faf crash_signal
$SRC/gcc/gcc/toplev.c:324
0xe4067f contains_struct_check
$SRC/gcc/gcc/tree.h:3230
0xe4067f expand_vector_parallel
$SRC/gcc/gcc/tree-vect-generic.c:328
0xe45928 expand_vector_operation
$SRC/gcc/gcc/tree-vect-generic.c:1007
0xe45928 expand_vector_operations_1
$SRC/gcc/gcc/tree-vect-generic.c:1801
0xe45928 expand_vector_operations
$SRC/gcc/gcc/tree-vect-generic.c:1832
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.
when compiled with (the equivalent to the given configure line) -std=gnu11 -O0
-Wall -Wextra -march=armv7-a -mfpu=vfpv3-d16 -mfloat-abi=hard -mthumb
Note that -mfpu=vfpv3-d16 means there's no NEON available.
With -mfpu=neon the ICE doesn't appear.
Looks like some kind of vec lowering bug when SIMD is not available on a
target?
