https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103894
Bug ID: 103894 Summary: ICE: in emit_move_multi_word, at expr.c:3870 with -mno-sse2 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 52110 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=52110&action=edit reduced testcase This seems to be a recent regression. Compiler output: $ x86_64-pc-linux-gnu-gcc -mno-sse2 testcase.c during RTL pass: reload testcase.c: In function 'foo': testcase.c:9:1: internal compiler error: in emit_move_multi_word, at expr.c:3870 9 | } | ^ 0x6c6c3b emit_move_multi_word /repo/gcc-trunk/gcc/expr.c:3870 0xfa3d0b gen_move_insn(rtx_def*, rtx_def*) /repo/gcc-trunk/gcc/expr.c:4145 0x11ade8d curr_insn_transform /repo/gcc-trunk/gcc/lra-constraints.c:4214 0x11af026 lra_constraints(bool) /repo/gcc-trunk/gcc/lra-constraints.c:5161 0x1199994 lra(_IO_FILE*) /repo/gcc-trunk/gcc/lra.c:2336 0x114c429 do_reload /repo/gcc-trunk/gcc/ira.c:5932 0x114c429 execute /repo/gcc-trunk/gcc/ira.c:6118 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-r12-6173-20220102211314-g9ff206d3865-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-r12-6173-20220102211314-g9ff206d3865-checking-yes-rtl-df-extra-amd64 Thread model: posix Supported LTO compression algorithms: zlib zstd gcc version 12.0.0 20220102 (experimental) (GCC)