https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113693
Bug ID: 113693 Summary: ICE: in check_loop_closed_ssa_def, at tree-ssa-loop-manip.cc:647 with _BitInt() at -O2 -fdbg-cnt=vect_loop:1 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 Target Milestone: --- Host: x86_64-pc-linux-gnu Target: x86_64-pc-linux-gnu Created attachment 57274 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=57274&action=edit reduced testcase (from gcc.dg/pr68766.c) Compiler output: $ x86_64-pc-linux-gnu-gcc -O2 -fdbg-cnt=vect_loop:1 testcase.c ***dbgcnt: lower limit 1 reached for vect_loop.*** ***dbgcnt: upper limit 1 reached for vect_loop.*** during GIMPLE pass: vect testcase.c: In function 'fn1': testcase.c:4:1: internal compiler error: in check_loop_closed_ssa_def, at tree-ssa-loop-manip.cc:647 4 | fn1(void) | ^~~ 0x865e0d check_loop_closed_ssa_def /repo/gcc-trunk/gcc/tree-ssa-loop-manip.cc:647 0x1695c07 check_loop_closed_ssa_bb /repo/gcc-trunk/gcc/tree-ssa-loop-manip.cc:672 0x1695fa6 verify_loop_closed_ssa(bool, loop*) /repo/gcc-trunk/gcc/tree-ssa-loop-manip.cc:697 0x1695fa6 verify_loop_closed_ssa(bool, loop*) /repo/gcc-trunk/gcc/tree-ssa-loop-manip.cc:681 0x13ca929 execute_function_todo /repo/gcc-trunk/gcc/passes.cc:2106 0x13cad2e execute_todo /repo/gcc-trunk/gcc/passes.cc:2142 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. $ 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-r14-8665-20240131161256-g3fed1609f61-checking-yes-rtl-df-extra-nobootstrap-amd64/bin/../libexec/gcc/x86_64-pc-linux-gnu/14.0.1/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 --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-r14-8665-20240131161256-g3fed1609f61-checking-yes-rtl-df-extra-nobootstrap-amd64 Thread model: posix Supported LTO compression algorithms: zlib zstd gcc version 14.0.1 20240131 (experimental) (GCC)