https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102696
Bug ID: 102696
Summary: ICE in vect_build_slp_tree, at tree-vect-slp.c:1551
for skylake-avx512 and icelake-server
Product: gcc
Version: 12.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: vsevolod.livinskij at frtk dot ru
Target Milestone: ---
Link to the Compiler Explorer:
https://godbolt.org/z/WhYP35KKT
Reproducer:
int a;
extern bool b[][14];
char h;
void f(short g[][14]) {
for (short d = h; d < 21; d += 1)
for (unsigned char e = 0; e < 14; e += 1) {
a = 0;
b[d][e] = g[d][e];
}
}
Error:
>$ g++ -c -O3 -march=skylake-avx512 func.cpp
during GIMPLE pass: slp
func.cpp: In function 'void f(short int (*)[14])':
func.cpp:4:6: internal compiler error: in vect_build_slp_tree, at
tree-vect-slp.c:1551
4 | void f(short g[][14]) {
| ^
0x153e92a vect_build_slp_tree
/testing/gcc/gcc_src_master/gcc/tree-vect-slp.c:1551
0x153ee59 vect_build_slp_tree_2
/testing/gcc/gcc_src_master/gcc/tree-vect-slp.c:2199
0x153e41c vect_build_slp_tree
/testing/gcc/gcc_src_master/gcc/tree-vect-slp.c:1532
0x153ee59 vect_build_slp_tree_2
/testing/gcc/gcc_src_master/gcc/tree-vect-slp.c:2199
0x153e41c vect_build_slp_tree
/testing/gcc/gcc_src_master/gcc/tree-vect-slp.c:1532
0x153ee59 vect_build_slp_tree_2
/testing/gcc/gcc_src_master/gcc/tree-vect-slp.c:2199
0x153e41c vect_build_slp_tree
/testing/gcc/gcc_src_master/gcc/tree-vect-slp.c:1532
0x153ee59 vect_build_slp_tree_2
/testing/gcc/gcc_src_master/gcc/tree-vect-slp.c:2199
0x153e41c vect_build_slp_tree
/testing/gcc/gcc_src_master/gcc/tree-vect-slp.c:1532
0x1543ac2 vect_build_slp_instance
/testing/gcc/gcc_src_master/gcc/tree-vect-slp.c:3012
0x1544d35 vect_analyze_slp_instance
/testing/gcc/gcc_src_master/gcc/tree-vect-slp.c:3332
0x1543d96 vect_build_slp_instance
/testing/gcc/gcc_src_master/gcc/tree-vect-slp.c:3230
0x1544d35 vect_analyze_slp_instance
/testing/gcc/gcc_src_master/gcc/tree-vect-slp.c:3332
0x1543d96 vect_build_slp_instance
/testing/gcc/gcc_src_master/gcc/tree-vect-slp.c:3230
0x1544d35 vect_analyze_slp_instance
/testing/gcc/gcc_src_master/gcc/tree-vect-slp.c:3332
0x154979a vect_analyze_slp(vec_info*, unsigned int)
/testing/gcc/gcc_src_master/gcc/tree-vect-slp.c:3365
0x154d316 vect_slp_analyze_bb_1
/testing/gcc/gcc_src_master/gcc/tree-vect-slp.c:5746
0x154d316 vect_slp_region
/testing/gcc/gcc_src_master/gcc/tree-vect-slp.c:5848
0x154f495 vect_slp_bbs
/testing/gcc/gcc_src_master/gcc/tree-vect-slp.c:6040
0x154f799 vect_slp_function(function*)
/testing/gcc/gcc_src_master/gcc/tree-vect-slp.c:6128
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.
root@86380205c3f4:/testing/result/S_3142105512/reduce# g++ -v
Using built-in specs.
COLLECT_GCC=g++
COLLECT_LTO_WRAPPER=/testing/gcc/bin_master/libexec/gcc/x86_64-pc-linux-gnu/12.0.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: /testing/gcc/gcc_src_master/configure --enable-multilib
--prefix=/testing/gcc/bin_master --disable-bootstrap
Thread model: posix
Supported LTO compression algorithms: zlib
gcc version 12.0.0 20211011 (30cce6f65a77b8eaa22f3efff7f1ba54858106f9) (GCC)
