https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113062
Bug ID: 113062
Summary: [14 Regression][aarch64] ICE in fuse_pair, at
config/aarch64/aarch64-ldp-fusion.cc:1456 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/struct-return-10_x.c results in ICE
since r14-6605-gc0911c6b357ba9.
$ cat struct-return-10_x.c
long double foo;
double bar;
void abort();
void check() {
if (foo == bar)
abort();
}
$ aarch64-linux-gnu-gcc struct-return-10_x.c -Oz -fharden-conditional-branches
during RTL pass: ldp_fusion
struct-return-10_x.c: In function ‘check’:
struct-return-10_x.c:7:1: internal compiler error: in fuse_pair, at
config/aarch64/aarch64-ldp-fusion.cc:1456
7 | }
| ^
0x1e2c0c8 ldp_bb_info::fuse_pair(bool, unsigned int, int, rtl_ssa::insn_info*,
rtl_ssa::insn_info*, base_cand&, rtl_ssa::insn_range_info const&)
/home/mjires/git/GCC/master/gcc/config/aarch64/aarch64-ldp-fusion.cc:1456
0x1e2da97 ldp_bb_info::try_fuse_pair(bool, unsigned int, rtl_ssa::insn_info*,
rtl_ssa::insn_info*)
/home/mjires/git/GCC/master/gcc/config/aarch64/aarch64-ldp-fusion.cc:2217
0x1e2de0f ldp_bb_info::merge_pairs(std::__cxx11::list<rtl_ssa::insn_info*,
std::allocator<rtl_ssa::insn_info*> >&, std::__cxx11::list<rtl_ssa::insn_info*,
std::allocator<rtl_ssa::insn_info*> >&, bool, unsigned int)
/home/mjires/git/GCC/master/gcc/config/aarch64/aarch64-ldp-fusion.cc:2306
0x1e2e034 ldp_bb_info::transform_for_base(int, access_group&)
/home/mjires/git/GCC/master/gcc/config/aarch64/aarch64-ldp-fusion.cc:2339
0x1e306c8 void
ldp_bb_info::traverse_base_map<ordered_hash_map<pair_hash<tree_operand_hash,
int_hash<int, -1, -2> >, access_group,
simple_hashmap_traits<default_hash_traits<pair_hash<tree_operand_hash,
int_hash<int, -1, -2> > >, access_group> >
>(ordered_hash_map<pair_hash<tree_operand_hash, int_hash<int, -1, -2> >,
access_group,
simple_hashmap_traits<default_hash_traits<pair_hash<tree_operand_hash,
int_hash<int, -1, -2> > >, access_group> >&)
/home/mjires/git/GCC/master/gcc/config/aarch64/aarch64-ldp-fusion.cc:2398
0x1e2e27c ldp_bb_info::transform()
/home/mjires/git/GCC/master/gcc/config/aarch64/aarch64-ldp-fusion.cc:2405
0x1e2968c ldp_fusion_bb(rtl_ssa::bb_info*)
/home/mjires/git/GCC/master/gcc/config/aarch64/aarch64-ldp-fusion.cc:2634
0x1e29716 ldp_fusion()
/home/mjires/git/GCC/master/gcc/config/aarch64/aarch64-ldp-fusion.cc:2643
0x1e29828 execute
/home/mjires/git/GCC/master/gcc/config/aarch64/aarch64-ldp-fusion.cc:2693
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
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 14.0.0 20231218 (experimental) (GCC)
