https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92119
Bug ID: 92119
Summary: [10 Regression] ICE: SIGSEGV in contains_struct_check
(tree.h:3380) with -Os -fno-tree-dce -fno-tree-dse
-ftree-slp-vectorize
Product: gcc
Version: 10.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: zsojka at seznam dot cz
Target Milestone: ---
Host: x86_64-pc-linux-gnu
Created attachment 47046
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=47046&action=edit
reduced testcase
Compiler output:
$ x86_64-pc-linux-gnu-gcc -Os -fno-tree-dce -fno-tree-dse -ftree-slp-vectorize
testcase.c -wrapper valgrind,-q,--track-origins=yes
==28823== Invalid read of size 2
==28823== at 0x1838D81: contains_struct_check (tree.h:3380)
==28823== by 0x1838D81: vect_recog_rotate_pattern(_stmt_vec_info*,
tree_node**) (tree-vect-patterns.c:2202)
==28823== by 0x18319C7: vect_pattern_recog_1(vect_recog_func*,
_stmt_vec_info*) (tree-vect-patterns.c:5167)
==28823== by 0x183DAEE: vect_pattern_recog(vec_info*)
(tree-vect-patterns.c:5323)
==28823== by 0x10D0AA2: vect_slp_analyze_bb_1 (tree-vect-slp.c:2928)
==28823== by 0x10D0AA2: vect_slp_bb(basic_block_def*) (tree-vect-slp.c:3065)
==28823== by 0x10D343F: (anonymous
namespace)::pass_slp_vectorize::execute(function*) (tree-vectorizer.c:1310)
==28823== by 0xDB5A7B: execute_one_pass(opt_pass*) (passes.c:2494)
==28823== by 0xDB639F: execute_pass_list_1(opt_pass*) (passes.c:2580)
==28823== by 0xDB63B1: execute_pass_list_1(opt_pass*) (passes.c:2581)
==28823== by 0xDB63B1: execute_pass_list_1(opt_pass*) (passes.c:2581)
==28823== by 0xDB63D8: execute_pass_list(function*, opt_pass*)
(passes.c:2591)
==28823== by 0xA93771: cgraph_node::expand() (cgraphunit.c:2194)
==28823== by 0xA944F7: expand_all_functions (cgraphunit.c:2332)
==28823== by 0xA944F7: symbol_table::compile() [clone .part.0]
(cgraphunit.c:2688)
==28823== Address 0x0 is not stack'd, malloc'd or (recently) free'd
==28823==
during GIMPLE pass: slp
testcase.c: In function 'foo':
testcase.c:4:1: internal compiler error: Segmentation fault
4 | foo (void)
| ^~~
Please submit a full bug report,
with preprocessed source if appropriate.
See <https://gcc.gnu.org/bugs/> for instructions.
$ x86_64-pc-linux-gnu-gcc -v
Using built-in specs.
COLLECT_GCC=/repo/gcc-trunk/binary-latest-amd64/bin/x86_64-pc-linux-gnu-gcc
COLLECT_LTO_WRAPPER=/repo/gcc-trunk/binary-trunk-277054-checking-yes-rtl-df-extra-amd64/bin/../libexec/gcc/x86_64-pc-linux-gnu/10.0.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: /repo/gcc-trunk//configure --enable-languages=c,c++
--enable-valgrind-annotations --disable-nls --enable-checking=yes,rtl,df,extra
--with-cloog --with-ppl --with-isl --build=x86_64-pc-linux-gnu
--host=x86_64-pc-linux-gnu --target=x86_64-pc-linux-gnu
--with-ld=/usr/bin/x86_64-pc-linux-gnu-ld
--with-as=/usr/bin/x86_64-pc-linux-gnu-as --disable-libstdcxx-pch
--prefix=/repo/gcc-trunk//binary-trunk-277054-checking-yes-rtl-df-extra-amd64
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 10.0.0 20191016 (experimental) (GCC)
