[Bug tree-optimization/92228] New: ICE in vectorizable_reduction, at tree-vect-loop.c:5730

[jan at jki dot io]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92228

            Bug ID: 92228
           Summary: ICE in  vectorizable_reduction, at
                    tree-vect-loop.c:5730
           Product: gcc
           Version: 10.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: jan at jki dot io
  Target Milestone: ---

Created attachment 47115
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=47115&action=edit
preprocessed source

gcc is version 10 and commit e1ad18eeeed892a13ce7a39d088c01ed7f32f7ba

COLLECT_GCC_OPTIONS='-D' 'ZEND_ENABLE_STATIC_TSRMLS_CACHE=1' '-I'
'ext/opcache/' '-I'
'/var/tmp/portage/dev-lang/php-7.3.11/work/sapis-build/cli/ext/opcache/' '-D'
'PHP_ATOM_INC' '-I'
'/var/tmp/portage/dev-lang/php-7.3.11/work/sapis-build/cli/include' '-I'
'/var/tmp/portage/dev-lang/php-7.3.11/work/sapis-build/cli/main' '-I'
'/var/tmp/portage/dev-lang/php-7.3.11/work/sapis-build/cli' '-I'
'/var/tmp/portage/dev-lang/php-7.3.11/work/sapis-build/cli/ext/date/lib' '-I'
'/usr/include/libxml2' '-I' '/usr/include/freetype2' '-I'
'/usr/include/harfbuzz' '-I' '/usr/include/glib-2.0' '-I'
'/usr/lib64/glib-2.0/include' '-I'
'/var/tmp/portage/dev-lang/php-7.3.11/work/sapis-build/cli/ext/mbstring/libmbfl'
'-I'
'/var/tmp/portage/dev-lang/php-7.3.11/work/sapis-build/cli/ext/mbstring/libmbfl/mbfl'
'-I' '/usr/include/pspell' '-I'
'/var/tmp/portage/dev-lang/php-7.3.11/work/sapis-build/cli/ext/zip/lib' '-I'
'/var/tmp/portage/dev-lang/php-7.3.11/work/sapis-build/cli/TSRM' '-I'
'/var/tmp/portage/dev-lang/php-7.3.11/work/sapis-build/cli/Zend' '-D'
'_REENTRANT' '-pthread' '-I' '/usr/include' '-pipe' '-march=skylake' '-O3' '-g'
'-v' '-save-temps' '-fuse-ld=bfd' '-fvisibility=hidden' '-pthread' '-D' 'ZTS'
'-D' 'ZEND_SIGNALS' '-c'
 /usr/libexec/gcc/x86_64-pc-linux-gnu/10.0.0-pre9999/cc1 -fpreprocessed
dfa_pass.i -quiet -dumpbase dfa_pass.c -march=skylake -auxbase dfa_pass -g -O3
-version -fuse-ld=bfd -fvisibility=hidden -o dfa_pass.s
GNU C17 (Gentoo 10.0.0_pre9999) version 10.0.0-pre9999 20191025 (experimental)
(x86_64-pc-linux-gnu)
        compiled by GNU C version 10.0.0-pre9999 20191025 (experimental), GMP
version 6.1.2, MPFR version 4.0.2, MPC version 1.1.0, isl version isl-0.21-GMP

GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
GNU C17 (Gentoo 10.0.0_pre9999) version 10.0.0-pre9999 20191025 (experimental)
(x86_64-pc-linux-gnu)
        compiled by GNU C version 10.0.0-pre9999 20191025 (experimental), GMP
version 6.1.2, MPFR version 4.0.2, MPC version 1.1.0, isl version isl-0.21-GMP

GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
Compiler executable checksum: 214bc0594d89b21e03201165e89f3352
during GIMPLE pass: vect
/var/tmp/portage/dev-lang/php-7.3.11/work/sapis-build/cli/ext/opcache/Optimizer/dfa_pass.c:
In function ‘zend_ssa_unlink_block.part.0’:
/var/tmp/portage/dev-lang/php-7.3.11/work/sapis-build/cli/ext/opcache/Optimizer/dfa_pass.c:654:13:
internal compiler error: in vectorizable_reduction, at tree-vect-loop.c:5730
  654 | static void zend_ssa_unlink_block(zend_op_array *op_array, zend_ssa
*ssa, zend_basic_block *block, int block_num)
      |             ^~~~~~~~~~~~~~~~~~~~~
0x92e9e4 vectorizable_reduction(_stmt_vec_info*, _slp_tree*, _slp_instance*,
vec<stmt_info_for_cost, va_heap, vl_ptr>*)
       
/var/tmp/portage/sys-devel/gcc-10.0.0_pre9999/work/gcc-10.0.0_pre9999/gcc/tree-vect-loop.c:5730
0x138f144 vect_analyze_loop_operations
       
/var/tmp/portage/sys-devel/gcc-10.0.0_pre9999/work/gcc-10.0.0_pre9999/gcc/tree-vect-loop.c:1560
0x138f144 vect_analyze_loop_2
       
/var/tmp/portage/sys-devel/gcc-10.0.0_pre9999/work/gcc-10.0.0_pre9999/gcc/tree-vect-loop.c:2079
0x138f144 vect_analyze_loop(loop*, _loop_vec_info*, vec_info_shared*)
       
/var/tmp/portage/sys-devel/gcc-10.0.0_pre9999/work/gcc-10.0.0_pre9999/gcc/tree-vect-loop.c:2367
0x139cc5e try_vectorize_loop_1
       
/var/tmp/portage/sys-devel/gcc-10.0.0_pre9999/work/gcc-10.0.0_pre9999/gcc/tree-vectorizer.c:886
0x139c824 vectorize_loops()
       
/var/tmp/portage/sys-devel/gcc-10.0.0_pre9999/work/gcc-10.0.0_pre9999/gcc/tree-vectorizer.c:1114
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