https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101294
Bug ID: 101294 Summary: [12 Regression] ICE: in maybe_legitimize_operand, at optabs.c:7614 with -mavx Product: gcc Version: 12.0 Status: UNCONFIRMED Keywords: ice-on-valid-code Severity: normal Priority: P3 Component: target 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 51101 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=51101&action=edit reduced testcase Compiler output: $ x86_64-pc-linux-gnu-gcc -mavx testcase.c during RTL pass: expand testcase.c: In function 'foo': testcase.c:7:3: internal compiler error: in maybe_legitimize_operand, at optabs.c:7614 7 | __builtin_shufflevector ((U){}, (V){}, 3); | ^~~~~~~~~~~~~~~~~~~~~~~ 0x6f80cd maybe_legitimize_operand /repo/gcc-trunk/gcc/optabs.c:7614 0x6f80cd maybe_legitimize_operands(insn_code, unsigned int, unsigned int, expand_operand*) /repo/gcc-trunk/gcc/optabs.c:7751 0xf562c9 maybe_gen_insn(insn_code, unsigned int, expand_operand*) /repo/gcc-trunk/gcc/optabs.c:7770 0xf63f68 maybe_expand_insn(insn_code, unsigned int, expand_operand*) /repo/gcc-trunk/gcc/optabs.c:7813 0xf63f68 expand_insn(insn_code, unsigned int, expand_operand*) /repo/gcc-trunk/gcc/optabs.c:7844 0xcfc2ab store_constructor /repo/gcc-trunk/gcc/expr.c:7086 0xcfd995 expand_constructor /repo/gcc-trunk/gcc/expr.c:8563 0xce9e8a expand_expr_real_1(tree_node*, rtx_def*, machine_mode, expand_modifier, rtx_def**, bool) /repo/gcc-trunk/gcc/expr.c:10748 0xcf71cc store_expr(tree_node*, rtx_def*, int, bool, bool) /repo/gcc-trunk/gcc/expr.c:5994 0xcf898d expand_assignment(tree_node*, tree_node*, bool) /repo/gcc-trunk/gcc/expr.c:5729 0xbb1377 expand_gimple_stmt_1 /repo/gcc-trunk/gcc/cfgexpand.c:3943 0xbb1377 expand_gimple_stmt /repo/gcc-trunk/gcc/cfgexpand.c:4041 0xbb7b8b expand_gimple_basic_block /repo/gcc-trunk/gcc/cfgexpand.c:6083 0xbb9ab7 execute /repo/gcc-trunk/gcc/cfgexpand.c:6809 Please submit a full bug report, with preprocessed source if appropriate. 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-r12-1975-20210702102426-g496e1d6a1f9-checking-yes-rtl-df-extra-amd64/bin/../libexec/gcc/x86_64-pc-linux-gnu/12.0.0/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 --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-r12-1975-20210702102426-g496e1d6a1f9-checking-yes-rtl-df-extra-amd64 Thread model: posix Supported LTO compression algorithms: zlib zstd gcc version 12.0.0 20210702 (experimental) (GCC)