[Bug target/113221] New: [14 Regression][aarch64]ICE in extract_insn, at recog.cc:2812 since r14-6605-gc0911c6b357ba9

["mjires at suse dot cz" <gcc-bugzilla@gcc.gnu.org>]

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)