https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113805
Bug ID: 113805
Summary: [aarch64][sme2] ICE in extract_insn, at recog.cc:2812
with r14-6178-g8d29b7aca15133
Product: gcc
Version: 14.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: mjires at suse dot cz
CC: rsandifo at gcc dot gnu.org
Target Milestone: ---
Target: aarch64
Compiling reduced testcase gcc.target/aarch64/sme/zt0_state_5.c results in ICE
since it was introduced in r14-6178-g8d29b7aca15133.
$ cat zt0_state_5.c
#pragma GCC target "+sme2"
void in_zt0() __arm_in("zt0");
__arm_new("zt0") void test12() { in_zt0(); }
$ aarch64-linux-gnu-gcc zt0_state_5.c -mtrack-speculation
zt0_state_5.c: In function ‘test12’:
zt0_state_5.c:3:44: error: unrecognizable insn:
3 | __arm_new("zt0") void test12() { in_zt0(); }
| ^
(jump_insn 36 12 37 (set (pc)
(if_then_else (eq (reg:DI 0 x0 [100])
(const_int 0 [0]))
(label_ref 40)
(pc))) "zt0_state_5.c":3:34 -1
(nil)
-> 40)
during RTL pass: split5
zt0_state_5.c:3:44: internal compiler error: in extract_insn, at recog.cc:2812
0x16f1c94 _fatal_insn(char const*, rtx_def const*, char const*, int, char
const*)
/home/mjires/git/GCC/master/gcc/rtl-error.cc:108
0x16f1cd5 _fatal_insn_not_found(rtx_def const*, char const*, int, char const*)
/home/mjires/git/GCC/master/gcc/rtl-error.cc:116
0x16a27f6 extract_insn(rtx_insn*)
/home/mjires/git/GCC/master/gcc/recog.cc:2812
0x16a24b5 extract_insn_cached(rtx_insn*)
/home/mjires/git/GCC/master/gcc/recog.cc:2701
0x120209c cleanup_subreg_operands(rtx_insn*)
/home/mjires/git/GCC/master/gcc/final.cc:3053
0x16a3fd2 split_insn
/home/mjires/git/GCC/master/gcc/recog.cc:3441
0x16a42b6 split_all_insns_noflow()
/home/mjires/git/GCC/master/gcc/recog.cc:3567
0x16a62f4 execute
/home/mjires/git/GCC/master/gcc/recog.cc:4641
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/14.0.1/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 14.0.1 20240207 (experimental) (GCC)
