https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113459
Bug ID: 113459
Summary: ICE: in as_a, at machmode.h:381 with memset() on a
_BitInt() at -O1 and above
Product: gcc
Version: 14.0
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
CC: jakub at gcc dot gnu.org
Target Milestone: ---
Host: x86_64-pc-linux-gnu
Target: x86_64-pc-linux-gnu
Created attachment 57119
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=57119&action=edit
reduced testcase
Compiler output:
$ cc1 -quiet -O testcase.c
during GIMPLE pass: fre
testcase.c: In function 'foo':
testcase.c:8:1: internal compiler error: in as_a, at machmode.h:381
8 | }
| ^
0x876149 scalar_int_mode as_a<scalar_int_mode>(machine_mode)
/repo/gcc-trunk/gcc/machmode.h:381
0x876149 scalar_int_mode as_a<scalar_int_mode>(machine_mode)
/repo/gcc-trunk/gcc/machmode.h:379
0x876149 vn_reference_lookup_3
/repo/gcc-trunk/gcc/tree-ssa-sccvn.cc:2972
0x16226f7 walk_non_aliased_vuses(ao_ref*, tree_node*, bool, void* (*)(ao_ref*,
tree_node*, void*), void* (*)(ao_ref*, tree_node*, void*, translate_flags*),
tree_node* (*)(tree_node*), unsigned int&, void*)
/repo/gcc-trunk/gcc/tree-ssa-alias.cc:3914
0x171a4ef vn_reference_lookup(tree_node*, tree_node*, vn_lookup_kind,
vn_reference_s**, bool, tree_node**, tree_node*, bool)
/repo/gcc-trunk/gcc/tree-ssa-sccvn.cc:4023
0x171e7e7 visit_reference_op_load
/repo/gcc-trunk/gcc/tree-ssa-sccvn.cc:5740
0x171e7e7 visit_stmt
/repo/gcc-trunk/gcc/tree-ssa-sccvn.cc:6261
0x171ee6b process_bb
/repo/gcc-trunk/gcc/tree-ssa-sccvn.cc:8025
0x1720846 do_rpo_vn_1
/repo/gcc-trunk/gcc/tree-ssa-sccvn.cc:8626
0x17223bb execute
/repo/gcc-trunk/gcc/tree-ssa-sccvn.cc:8787
Please submit a full bug report, with preprocessed source (by using
-freport-bug).
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
$ xgcc -v
Using built-in specs.
COLLECT_GCC=/repo/build-gcc-trunk-amd64A/gcc/xgcc
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
--disable-bootstrap --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-r14-8193-20240117105849-g3340878009a-checking-yes-rtl-df-extra-nobootstrap-amd64
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 14.0.1 20240117 (experimental) (GCC)
