https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112532
Bug ID: 112532 Summary: [14 Regression] ICE: in extract_insn, at recog.cc:2804 (unrecognizable insn: vec_duplicate:V4HI) with -O -msse4 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 56586 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=56586&action=edit reduced testcase Compiler output: $ x86_64-pc-linux-gnu-gcc -O -msse4 testcase.c testcase.c: In function 'foo0': testcase.c:26:1: error: unrecognizable insn: 26 | } | ^ (insn 58 56 59 2 (set (reg:V4HI 20 xmm0 [129]) (vec_duplicate:V4HI (reg:HI 22 xmm2 [123]))) "testcase.c":16:21 -1 (nil)) during RTL pass: split2 testcase.c:26:1: internal compiler error: in extract_insn, at recog.cc:2804 0x7f5c79 _fatal_insn(char const*, rtx_def const*, char const*, int, char const*) /repo/gcc-trunk/gcc/rtl-error.cc:108 0x7f5cf6 _fatal_insn_not_found(rtx_def const*, char const*, int, char const*) /repo/gcc-trunk/gcc/rtl-error.cc:116 0x7e4b65 extract_insn(rtx_insn*) /repo/gcc-trunk/gcc/recog.cc:2804 0x14168c4 extract_insn_cached(rtx_insn*) /repo/gcc-trunk/gcc/recog.cc:2693 0x10af2a4 cleanup_subreg_operands(rtx_insn*) /repo/gcc-trunk/gcc/final.cc:3054 0x1414088 split_insn /repo/gcc-trunk/gcc/recog.cc:3419 0x141ad65 split_all_insns() /repo/gcc-trunk/gcc/recog.cc:3487 0x141ae88 execute /repo/gcc-trunk/gcc/recog.cc:4411 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-r14-5443-20231114122339-gb9fd8399ec0-checking-yes-rtl-df-extra-nobootstrap-amd64/bin/../libexec/gcc/x86_64-pc-linux-gnu/14.0.0/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 --disable-libstdcxx-pch --prefix=/repo/gcc-trunk//binary-trunk-r14-5443-20231114122339-gb9fd8399ec0-checking-yes-rtl-df-extra-nobootstrap-amd64 Thread model: posix Supported LTO compression algorithms: zlib zstd gcc version 14.0.0 20231114 (experimental) (GCC)