https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116923
Bug ID: 116923 Summary: ICE: in extract_insn, at recog.cc:2882 (unrecognizable insn) with -mavx10.2-512 -mno-avx10.2-256 and __bf16 vector Product: gcc Version: 15.0 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 59249 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=59249&action=edit reduced testcase Compiler output: $ x86_64-pc-linux-gnu-gcc -mavx10.2-512 -mno-avx10.2-256 testcase.c testcase.c: In function 'foo': testcase.c:7:1: error: unrecognizable insn: 7 | } | ^ (insn 7 6 8 2 (set (reg:V32BF 99 [ _2 ]) (plus:V32BF (reg:V32BF 98 [ v.0_1 ]) (reg:V32BF 100))) "testcase.c":6:5 -1 (nil)) during RTL pass: vregs testcase.c:7:1: internal compiler error: in extract_insn, at recog.cc:2882 0x2c45ffe internal_error(char const*, ...) /repo/gcc-trunk/gcc/diagnostic-global-context.cc:517 0xe7b953 fancy_abort(char const*, int, char const*) /repo/gcc-trunk/gcc/diagnostic.cc:1570 0x8347f9 _fatal_insn(char const*, rtx_def const*, char const*, int, char const*) /repo/gcc-trunk/gcc/rtl-error.cc:108 0x834876 _fatal_insn_not_found(rtx_def const*, char const*, int, char const*) /repo/gcc-trunk/gcc/rtl-error.cc:116 0x8235f9 extract_insn(rtx_insn*) /repo/gcc-trunk/gcc/recog.cc:2882 0x11d338d instantiate_virtual_regs_in_insn /repo/gcc-trunk/gcc/function.cc:1612 0x11d338d instantiate_virtual_regs /repo/gcc-trunk/gcc/function.cc:1995 0x11d338d execute /repo/gcc-trunk/gcc/function.cc:2042 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-r15-3987-20241001125221-g60fa7f51c84-checking-yes-rtl-df-extra-nobootstrap-amd64/bin/../libexec/gcc/x86_64-pc-linux-gnu/15.0.0/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 --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 --enable-libsanitizer --disable-libstdcxx-pch --prefix=/repo/gcc-trunk//binary-trunk-r15-3987-20241001125221-g60fa7f51c84-checking-yes-rtl-df-extra-nobootstrap-amd64 Thread model: posix Supported LTO compression algorithms: zlib zstd gcc version 15.0.0 20241001 (experimental) (GCC)