https://gcc.gnu.org/bugzilla/show_bug.cgi?id=125716
Bug ID: 125716
Summary: [17 Regression] ICE: in extract_constrain_insn, at
recog.cc:2795 (insn does not satisfy its constraints:
*aarch64_simd_movv2hi) with -O2 -fno-vect-cost-model
-fweb -mtune=octeontx81
Product: gcc
Version: 17.0
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 64692
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=64692&action=edit
reduced testcase
Compiler output:
$ aarch64-unknown-linux-gnu-gcc -O2 -fno-vect-cost-model -fweb
-mtune=octeontx81 testcase.c
testcase.c: In function 'foo':
testcase.c:3:23: error: insn does not satisfy its constraints:
3 | void foo() { cs *= d; }
| ^
(insn 32 26 27 2 (set (reg:V2HI 63 v31 [orig:130 _13 ] [130])
(reg:V2HI 0 x0 [orig:115 _13 ] [115])) "testcase.c":3:17 1392
{*aarch64_simd_movv2hi}
(nil))
during RTL pass: reload
testcase.c:3:23: internal compiler error: in extract_constrain_insn, at
recog.cc:2795
0x28fefed internal_error(char const*, ...)
/repo/gcc-trunk/gcc/diagnostic-global-context.cc:787
0xcade31 fancy_abort(char const*, int, char const*)
/repo/gcc-trunk/gcc/diagnostics/context.cc:1813
0x926c51 _fatal_insn(char const*, rtx_def const*, char const*, int, char
const*)
/repo/gcc-trunk/gcc/rtl-error.cc:108
0x926cd8 _fatal_insn_not_found(rtx_def const*, char const*, int, char const*)
/repo/gcc-trunk/gcc/rtl-error.cc:118
0x9194ad extract_constrain_insn(rtx_insn*)
/repo/gcc-trunk/gcc/recog.cc:2795
0x12994b4 check_rtl
/repo/gcc-trunk/gcc/lra.cc:2242
0x129e6c3 lra(_IO_FILE*, int)
/repo/gcc-trunk/gcc/lra.cc:2691
0x124626f do_reload
/repo/gcc-trunk/gcc/ira.cc:6084
0x124626f execute
/repo/gcc-trunk/gcc/ira.cc:6272
/repo/gcc-trunk/binary-trunk-20260610021630-r17-1459-gb700707a77eeaa-checking-yes-rtl-df-extra-aarch64/bin/../libexec/gcc/aarch64-unknown-linux-gnu/17.0.0/cc1
-quiet -iprefix
/repo/gcc-trunk/binary-trunk-20260610021630-r17-1459-gb700707a77eeaa-checking-yes-rtl-df-extra-aarch64/bin/../lib/gcc/aarch64-unknown-linux-gnu/17.0.0/
testcase.c -quiet -dumpdir a- -dumpbase testcase.c -dumpbase-ext .c
-mtune=octeontx81 -mlittle-endian -mabi=lp64 -O2 -fvect-cost-model=unlimited
-fweb -o /tmp/ccREnul0.s
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-20260610021630-r17-1459-gb700707a77eeaa-checking-yes-rtl-df-extra-aarch64/bin/../libexec/gcc/aarch64-unknown-linux-gnu/17.0.0/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
--enable-libsanitizer --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-20260610021630-r17-1459-gb700707a77eeaa-checking-yes-rtl-df-extra-aarch64
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 17.0.0 20260610 (experimental) (GCC)
