https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114334
Bug ID: 114334 Summary: [14 Regression] ICE: in extract_insn, at recog.cc:2812 (unrecognizable insn and:HF?) with lroundf16() and -ffast-math -mavx512fp16 Product: gcc Version: 14.0 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 57696 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=57696&action=edit reduced testcase Compiler output: $ x86_64-pc-linux-gnu-gcc -ffast-math -mavx512fp16 testcase.c testcase.c: In function 'foo': testcase.c:5:1: error: unrecognizable insn: 5 | } | ^ (insn 10 9 11 2 (set (reg:HF 102) (and:HF (reg:HF 104) (reg:HF 101))) "testcase.c":4:10 -1 (nil)) during RTL pass: vregs testcase.c:5:1: internal compiler error: in extract_insn, at recog.cc:2812 0x8071a7 _fatal_insn(char const*, rtx_def const*, char const*, int, char const*) /repo/gcc-trunk/gcc/rtl-error.cc:108 0x807224 _fatal_insn_not_found(rtx_def const*, char const*, int, char const*) /repo/gcc-trunk/gcc/rtl-error.cc:116 0x7f6093 extract_insn(rtx_insn*) /repo/gcc-trunk/gcc/recog.cc:2812 0x113444d instantiate_virtual_regs_in_insn /repo/gcc-trunk/gcc/function.cc:1611 0x113444d instantiate_virtual_regs /repo/gcc-trunk/gcc/function.cc:1994 0x113444d execute /repo/gcc-trunk/gcc/function.cc:2041 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-r14-9454-20240313184120-g11caf47b599-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 --enable-libsanitizer --disable-libstdcxx-pch --prefix=/repo/gcc-trunk//binary-trunk-r14-9454-20240313184120-g11caf47b599-checking-yes-rtl-df-extra-nobootstrap-amd64 Thread model: posix Supported LTO compression algorithms: zlib zstd gcc version 14.0.1 20240313 (experimental) (GCC)