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From: "mjires at suse dot cz" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug middle-end/112784] New: ICE in smallest_mode_for_size, at stor-layout.cc:356 | -finline-stringops Date: Thu, 30 Nov 2023 14:11:31 +0000 [thread overview] Message-ID: <bug-112784-4@http.gcc.gnu.org/bugzilla/> (raw) https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112784 Bug ID: 112784 Summary: ICE in smallest_mode_for_size, at stor-layout.cc:356 | -finline-stringops Product: gcc Version: 14.0 Status: UNCONFIRMED Keywords: ice-on-valid-code Severity: normal Priority: P3 Component: middle-end Assignee: unassigned at gcc dot gnu.org Reporter: mjires at suse dot cz CC: aoliva at gcc dot gnu.org Target Milestone: --- Compiling reduced testcase c-c++-common/torture/builtin-clear-padding-2.c results in ICE with new -finline-stringops. $ cat builtin-clear-padding-2.c struct S { int e; } __attribute__((aligned(128))); int main() { struct S s1; struct S s2; int v = __builtin_memcmp(&s1, &s2, sizeof(s1)); } $ gcc builtin-clear-padding-2.c -mavx512cd -finline-stringops during RTL pass: expand builtin-clear-padding-2.c: In function ‘main’: builtin-clear-padding-2.c:8:11: internal compiler error: in smallest_mode_for_size, at stor-layout.cc:356 8 | int v = __builtin_memcmp(&s1, &s2, sizeof(s1)); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 0x10111ef smallest_mode_for_size(poly_int<1u, unsigned long>, mode_class) /home/mjires/git/GCC/master/gcc/stor-layout.cc:356 0xc19bc2 smallest_int_mode_for_size(poly_int<1u, unsigned long>) /home/mjires/git/GCC/master/gcc/machmode.h:916 0xc19bc2 emit_block_cmp_via_loop /home/mjires/git/GCC/master/gcc/expr.cc:2705 0xab40ab expand_builtin_memcmp /home/mjires/git/GCC/master/gcc/builtins.cc:4825 0xabea1f expand_builtin(tree_node*, rtx_def*, rtx_def*, machine_mode, int) /home/mjires/git/GCC/master/gcc/builtins.cc:7893 0xc0e9e4 expand_expr_real_1(tree_node*, rtx_def*, machine_mode, expand_modifier, rtx_def**, bool) /home/mjires/git/GCC/master/gcc/expr.cc:12304 0xc1b4d5 store_expr(tree_node*, rtx_def*, int, bool, bool) /home/mjires/git/GCC/master/gcc/expr.cc:6711 0xc21870 expand_assignment(tree_node*, tree_node*, bool) /home/mjires/git/GCC/master/gcc/expr.cc:6432 0xc21870 expand_assignment(tree_node*, tree_node*, bool) /home/mjires/git/GCC/master/gcc/expr.cc:5947 0xae9026 expand_call_stmt /home/mjires/git/GCC/master/gcc/cfgexpand.cc:2830 0xae9026 expand_gimple_stmt_1 /home/mjires/git/GCC/master/gcc/cfgexpand.cc:3881 0xae9026 expand_gimple_stmt /home/mjires/git/GCC/master/gcc/cfgexpand.cc:4045 0xaea307 expand_gimple_basic_block /home/mjires/git/GCC/master/gcc/cfgexpand.cc:6101 0xaebf66 execute /home/mjires/git/GCC/master/gcc/cfgexpand.cc:6836 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. $ gcc -v Using built-in specs. COLLECT_GCC=gcc COLLECT_LTO_WRAPPER=/home/mjires/built/master/libexec/gcc/x86_64-pc-linux-gnu/14.0.0/lto-wrapper Target: x86_64-pc-linux-gnu Configured with: /home/mjires/git/GCC/master/configure --prefix=/home/mjires/built/master --disable-bootstrap --enable-checking --enable-languages=c,c++,fortran,lto Thread model: posix Supported LTO compression algorithms: zlib zstd gcc version 14.0.0 20231130 (experimental) (GCC)
next reply other threads:[~2023-11-30 14:11 UTC|newest] Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top 2023-11-30 14:11 mjires at suse dot cz [this message] 2023-12-09 2:58 ` [Bug middle-end/112784] ICE in smallest_mode_for_size, at stor-layout.cc:356 | -finline-stringops -mavx512cd aoliva at gcc dot gnu.org 2023-12-11 18:32 ` cvs-commit at gcc dot gnu.org 2023-12-11 18:47 ` aoliva at gcc dot gnu.org
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