https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109855
Bug ID: 109855
Summary: [14 Regression] ICE: in curr_insn_transform, at
lra-constraints.cc:4231 unable to generate reloads for
{aarch64_mlav4hi_vec_concatz_le} at -O1
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: zsojka at seznam dot cz
Target Milestone: ---
Host: x86_64-pc-linux-gnu
Target: aarch64-unknown-linux-gnu
Created attachment 55082
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=55082&action=edit
reduced testcase
Compiler output:
$ aarch64-unknown-linux-gnu-gcc -O testcase.c
testcase.c: In function 'foo':
testcase.c:8:1: error: unable to generate reloads for:
8 | }
| ^
(insn 9 8 10 2 (set (reg:V8HI 102)
(vec_concat:V8HI (plus:V4HI (mult:V4HI (reg:V4HI 103)
(reg:V4HI 103))
(reg:V4HI 103))
(const_vector:V4HI [
(const_int 0 [0]) repeated x4
]))) "testcase.c":7:10 2022 {aarch64_mlav4hi_vec_concatz_le}
(expr_list:REG_DEAD (reg:V4HI 103)
(nil)))
during RTL pass: reload
testcase.c:8:1: internal compiler error: in curr_insn_transform, at
lra-constraints.cc:4231
0x8098df _fatal_insn(char const*, rtx_def const*, char const*, int, char
const*)
/repo/gcc-trunk/gcc/rtl-error.cc:108
0x7c6f0a curr_insn_transform
/repo/gcc-trunk/gcc/lra-constraints.cc:4231
0x101b67f lra_constraints(bool)
/repo/gcc-trunk/gcc/lra-constraints.cc:5396
0x1002c44 lra(_IO_FILE*)
/repo/gcc-trunk/gcc/lra.cc:2375
0xfb22a9 do_reload
/repo/gcc-trunk/gcc/ira.cc:5967
0xfb22a9 execute
/repo/gcc-trunk/gcc/ira.cc:6153
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-unknown-linux-gnu-gcc -v
Using built-in specs.
COLLECT_GCC=/repo/gcc-trunk/binary-latest-aarch64/bin/aarch64-unknown-linux-gnu-gcc
COLLECT_LTO_WRAPPER=/repo/gcc-trunk/binary-trunk-r14-810-20230514170325-g1871740c780-checking-yes-rtl-df-extra-aarch64/bin/../libexec/gcc/aarch64-unknown-linux-gnu/14.0.0/lto-wrapper
Target: aarch64-unknown-linux-gnu
Configured with: /repo/gcc-trunk//configure --enable-languages=c,c++
--enable-valgrind-annotations --disable-nls --enable-checking=yes,rtl,df,extra
--with-cloog --with-ppl --with-isl
--with-sysroot=/usr/aarch64-unknown-linux-gnu --build=x86_64-pc-linux-gnu
--host=x86_64-pc-linux-gnu --target=aarch64-unknown-linux-gnu
--with-ld=/usr/bin/aarch64-unknown-linux-gnu-ld
--with-as=/usr/bin/aarch64-unknown-linux-gnu-as --disable-libstdcxx-pch
--prefix=/repo/gcc-trunk//binary-trunk-r14-810-20230514170325-g1871740c780-checking-yes-rtl-df-extra-aarch64
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 14.0.0 20230514 (experimental) (GCC)
