https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114044
Bug ID: 114044 Summary: ICE: in expand_fn_using_insn, at internal-fn.cc:208 with _BitInt() and -O -fno-tree-dce Product: gcc Version: 14.0 Status: UNCONFIRMED Keywords: ice-on-valid-code Severity: normal Priority: P3 Component: rtl-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 57489 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=57489&action=edit reduced testcase Compiler output: $ x86_64-pc-linux-gnu-gcc -O -fno-tree-dce testcase.c during RTL pass: expand testcase.c: In function 'foo': testcase.c:5:7: internal compiler error: in expand_fn_using_insn, at internal-fn.cc:208 5 | 5 | __builtin_stdc_bit_floor(ub256_0) & 4; | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 0x79b2a7 expand_fn_using_insn /repo/gcc-trunk/gcc/internal-fn.cc:208 0xf83d8f expand_call_stmt /repo/gcc-trunk/gcc/cfgexpand.cc:2771 0xf83d8f expand_gimple_stmt_1 /repo/gcc-trunk/gcc/cfgexpand.cc:3932 0xf83d8f expand_gimple_stmt /repo/gcc-trunk/gcc/cfgexpand.cc:4077 0xf8a2fe expand_gimple_basic_block /repo/gcc-trunk/gcc/cfgexpand.cc:6133 0xf8bfd7 execute /repo/gcc-trunk/gcc/cfgexpand.cc:6872 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-r14-9117-20240221083607-g5772ea772d1-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-r14-9117-20240221083607-g5772ea772d1-checking-yes-rtl-df-extra-nobootstrap-amd64 Thread model: posix Supported LTO compression algorithms: zlib zstd gcc version 14.0.1 20240221 (experimental) (GCC)