https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113093
Bug ID: 113093
Summary: [14 Regression][aarch64] ICE in rtl_verify_bb_insn, at
cfgrtl.cc:2796 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/compat/scalar-return-3_y.c results in ICE
since r14-6605-gc0911c6b357ba9.
$ cat scalar-return-3_y.c
_Complex long *c;
void init() { *c = 1.0; }
$ aarch64-linux-gnu-gcc scalar-return-3_y.c -Os
-fharden-control-flow-redundancy -fnon-call-exceptions
scalar-return-3_y.c: In function ‘init’:
scalar-return-3_y.c:2:25: error: in basic block 2:
2 | void init() { *c = 1.0; }
| ^
scalar-return-3_y.c:2:25: error: flow control insn inside a basic block
(insn 12 11 66 2 (set (mem:V2x8QI (reg/f:DI 100 [ c.0_1 ]) [0 +0 S16 A64])
(unspec:V2x8QI [
(reg:DI 109)
(const_int 0 [0])
] UNSPEC_STP)) "scalar-return-3_y.c":2:18 91 {*store_pair_8}
(expr_list:REG_EH_REGION (const_int 1 [0x1])
(nil)))
during RTL pass: ldp_fusion
scalar-return-3_y.c:2:25: internal compiler error: in rtl_verify_bb_insns, at
cfgrtl.cc:2802
0x16e5db4 _fatal_insn(char const*, rtx_def const*, char const*, int, char
const*)
/home/mjires/git/GCC/master/gcc/rtl-error.cc:108
0x105e9d6 rtl_verify_bb_insns
/home/mjires/git/GCC/master/gcc/cfgrtl.cc:2802
0x105ec9e rtl_verify_flow_info_1
/home/mjires/git/GCC/master/gcc/cfgrtl.cc:2889
0x105f3fd rtl_verify_flow_info
/home/mjires/git/GCC/master/gcc/cfgrtl.cc:3134
0x10448c2 verify_flow_info()
/home/mjires/git/GCC/master/gcc/cfghooks.cc:283
0x103b2fa checking_verify_flow_info()
/home/mjires/git/GCC/master/gcc/cfghooks.h:214
0x2956e01 try_optimize_cfg
/home/mjires/git/GCC/master/gcc/cfgcleanup.cc:2980
0x29572da cleanup_cfg(int)
/home/mjires/git/GCC/master/gcc/cfgcleanup.cc:3143
0x1e2bd7f ldp_fusion_destroy
/home/mjires/git/GCC/master/gcc/config/aarch64/aarch64-ldp-fusion.cc:2426
0x1e2cb02 ldp_fusion()
/home/mjires/git/GCC/master/gcc/config/aarch64/aarch64-ldp-fusion.cc:2650
0x1e2cbec execute
/home/mjires/git/GCC/master/gcc/config/aarch64/aarch64-ldp-fusion.cc:2698
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 20231220 (experimental) (GCC)
