https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113221
Bug ID: 113221 Summary: [14 Regression][aarch64]ICE in extract_insn, at recog.cc:2812 since r14-6605-gc0911c6b357ba9 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: mjires at suse dot cz CC: acoplan at gcc dot gnu.org Target Milestone: --- Target: aarch64 Compiling reduced testcase gcc.dg/debug/pr43972.c results in ICE since r14-6605-gc0911c6b357ba9. $ cat pr43972.c void bar(); void foo(int* b) { for (;;) *b++ = (long)bar; } $ aarch64-linux-gnu-gcc pr43972.c -O1 -fno-move-loop-invariants -funroll-all-loops pr43972.c: In function ‘foo’: pr43972.c:5:1: error: unrecognizable insn: 5 | } | ^ (insn 80 0 0 (set (reg:SI 130) (subreg:SI (lo_sum:DI (reg/f:DI 105) (symbol_ref:DI ("bar") [flags 0x41] <function_decl 0x7ffff7518100 bar>)) 0)) -1 (nil)) during RTL pass: reload pr43972.c:5:1: internal compiler error: in extract_insn, at recog.cc:2812 0x16e9be0 _fatal_insn(char const*, rtx_def const*, char const*, int, char const*) /home/mjires/git/GCC/master/gcc/rtl-error.cc:108 0x16e9c21 _fatal_insn_not_found(rtx_def const*, char const*, int, char const*) /home/mjires/git/GCC/master/gcc/rtl-error.cc:116 0x169a764 extract_insn(rtx_insn*) /home/mjires/git/GCC/master/gcc/recog.cc:2812 0x147d140 ira_remove_insn_scratches(rtx_insn*, bool, _IO_FILE*, rtx_def* (*)(rtx_def*)) /home/mjires/git/GCC/master/gcc/ira.cc:5381 0x14d574a remove_insn_scratches /home/mjires/git/GCC/master/gcc/lra.cc:2154 0x14d112b lra_emit_move(rtx_def*, rtx_def*) /home/mjires/git/GCC/master/gcc/lra.cc:513 0x14eb151 curr_insn_transform /home/mjires/git/GCC/master/gcc/lra-constraints.cc:4669 0x14ed78c lra_constraints(bool) /home/mjires/git/GCC/master/gcc/lra-constraints.cc:5414 0x14d6064 lra(_IO_FILE*, int) /home/mjires/git/GCC/master/gcc/lra.cc:2442 0x147e4d3 do_reload /home/mjires/git/GCC/master/gcc/ira.cc:5973 0x147e970 execute /home/mjires/git/GCC/master/gcc/ira.cc:6161 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. $ aarch64-linux-gnu-gcc -v Using built-in specs. COLLECT_GCC=aarch64-linux-gnu-gcc COLLECT_LTO_WRAPPER=/home/mjires/built/master/libexec/gcc/aarch64-linux-gnu/14.0.0/lto-wrapper Target: aarch64-linux-gnu Configured with: /home/mjires/git/GCC/master/configure --prefix=/home/mjires/built/master --target=aarch64-linux-gnu --disable-bootstrap --enable-languages=c,c++,fortran --disable-multilib --disable-libsanitizer --enable-checking : (reconfigured) /home/mjires/git/GCC/master/configure --prefix=/home/mjires/built/master --target=aarch64-linux-gnu --disable-bootstrap --enable-languages=c,c++,fortran --disable-multilib --disable-libsanitizer --enable-checking Thread model: posix Supported LTO compression algorithms: zlib zstd gcc version 14.0.0 20240103 (experimental) (GCC)