https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97693
Bug ID: 97693
Summary: [11 Regression] SVE: ICE in prepare_load_store_mask,
at tree-vect-stmts.c since r11-1143-gb05d5563
Product: gcc
Version: 11.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: acoplan at gcc dot gnu.org
Target Milestone: ---
For the following C testcase:
extern short a[];
int b;
short c, d;
unsigned e() {
if (c)
return c;
return d;
}
void f() {
for (unsigned g = b; g; g += 6)
for (_Bool h = 0; h < (_Bool)e(); h = 1)
a[g] = 1 / b;
}
AArch64 GCC ICEs with -O3 -march=armv8.2-a+sve since
r11-1143-gb05d5563f4be13b4a0d0951375a82adf483973c0. To reproduce:
$ aarch64-elf-gcc -c -O3 -march=armv8.2-a+sve test.c
during GIMPLE pass: vect
test.c: In function 'f':
test.c:9:6: internal compiler error: in prepare_load_store_mask, at
tree-vect-stmts.c:1758
9 | void f() {
| ^
0x106d15f prepare_load_store_mask
/home/alecop01/toolchain/src/gcc/gcc/tree-vect-stmts.c:1758
0x108784a vectorizable_call
/home/alecop01/toolchain/src/gcc/gcc/tree-vect-stmts.c:3440
0x109972f vect_transform_stmt(vec_info*, _stmt_vec_info*,
gimple_stmt_iterator*, _slp_tree*, _slp_instance*)
/home/alecop01/toolchain/src/gcc/gcc/tree-vect-stmts.c:10838
0x109ffbc vect_transform_loop_stmt
/home/alecop01/toolchain/src/gcc/gcc/tree-vect-loop.c:8933
0x10bd364 vect_transform_loop(_loop_vec_info*, gimple*)
/home/alecop01/toolchain/src/gcc/gcc/tree-vect-loop.c:9367
0x10e9a7e try_vectorize_loop_1
/home/alecop01/toolchain/src/gcc/gcc/tree-vectorizer.c:1091
0x10ea1ab try_vectorize_loop
/home/alecop01/toolchain/src/gcc/gcc/tree-vectorizer.c:1148
0x10ea585 vectorize_loops()
/home/alecop01/toolchain/src/gcc/gcc/tree-vectorizer.c:1229
0xf76a5b execute
/home/alecop01/toolchain/src/gcc/gcc/tree-ssa-loop.c:414
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.
