https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110625
Tamar Christina <tnfchris at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |tnfchris at gcc dot gnu.org
--- Comment #13 from Tamar Christina <tnfchris at gcc dot gnu.org> ---
Hi,
This patch is causing several ICEs:
For instance in x264,
during GIMPLE pass: vect
x264_src/common/pixel.c: In function 'x264_pixel_satd_8x4.constprop':
x264_src/common/pixel.c:234:21: internal compiler error: in info_for_reduction,
at tree-vect-loop.cc:5473
234 | static NOINLINE int x264_pixel_satd_8x4( uint8_t *pix1, int i_pix1,
uint8_t *pix2, int i_pix2 )
| ^
0xe45e23 info_for_reduction(vec_info*, _stmt_vec_info*)
/opt/buildAgent/work/5c94c4ced6ebfcd0/gcc/tree-vect-loop.cc:5473
0xf1e317 aarch64_force_single_cycle
/opt/buildAgent/work/5c94c4ced6ebfcd0/gcc/config/aarch64/aarch64.cc:16782
0xf1e317 aarch64_vector_costs::count_ops(unsigned int, vect_cost_for_stmt,
_stmt_vec_info*, aarch64_vec_op_count*)
/opt/buildAgent/work/5c94c4ced6ebfcd0/gcc/config/aarch64/aarch64.cc:16807
0xf31fbb aarch64_vector_costs::add_stmt_cost(int, vect_cost_for_stmt,
_stmt_vec_info*, _slp_tree*, tree_node*, int, vect_cost_model_location)
/opt/buildAgent/work/5c94c4ced6ebfcd0/gcc/config/aarch64/aarch64.cc:17074
0xe59edb add_stmt_cost(vector_costs*, int, vect_cost_for_stmt, _stmt_vec_info*,
_slp_tree*, tree_node*, int, vect_cost_model_location)
/opt/buildAgent/work/5c94c4ced6ebfcd0/gcc/tree-vectorizer.h:1823
0xe59edb add_stmt_costs(vector_costs*, vec<stmt_info_for_cost, va_heap,
vl_ptr>*)
/opt/buildAgent/work/5c94c4ced6ebfcd0/gcc/tree-vectorizer.h:1870
0xe59edb vect_compute_single_scalar_iteration_cost
/opt/buildAgent/work/5c94c4ced6ebfcd0/gcc/tree-vect-loop.cc:1624
0xe59edb vect_analyze_loop_2
/opt/buildAgent/work/5c94c4ced6ebfcd0/gcc/tree-vect-loop.cc:2710
0xe5bb07 vect_analyze_loop_1
/opt/buildAgent/work/5c94c4ced6ebfcd0/gcc/tree-vect-loop.cc:3329
0xe5c1cb vect_analyze_loop(loop*, vec_info_shared*)
/opt/buildAgent/work/5c94c4ced6ebfcd0/gcc/tree-vect-loop.cc:3483
0xe90797 try_vectorize_loop_1
/opt/buildAgent/work/5c94c4ced6ebfcd0/gcc/tree-vectorizer.cc:1064
0xe90797 try_vectorize_loop
/opt/buildAgent/work/5c94c4ced6ebfcd0/gcc/tree-vectorizer.cc:1180
0xe90cb3 execute
/opt/buildAgent/work/5c94c4ced6ebfcd0/gcc/tree-vectorizer.cc:1296
This seems to be caused because in aarch64_force_single_cycle is
unconditionally calling info_for_reduction without checking to see if this stmt
is actually a reduction.
You'll want to check STMT_VINFO_REDUC_DEF or STMT_VINFO_DEF_TYPE before calling
this.
