https://gcc.gnu.org/bugzilla/show_bug.cgi?id=123870
Bug ID: 123870
Summary: [riscv64] ICE on vzext_vf2 and xtheadvector
Product: gcc
Version: 15.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: jpegqs at gmail dot com
Target Milestone: ---
$ cat test.c
#include <riscv_vector.h>
vuint16m2_t test(vuint8m1_t v) {
return __riscv_vzext_vf2_u16m2(v, 1);
}
$ gcc-15 -march=rv64gcxtheadvector test.c -c
test.c: In function ‘test’:
test.c:5:1: error: unrecognizable insn:
5 | }
| ^
(insn 16 15 19 2 (set (reg:RVVM2HI 134 [ _2 ])
(if_then_else:RVVM2HI (unspec:RVVMF8BI [
(const_vector:RVVMF8BI repeat [
(const_int 1 [0x1])
])
(reg:DI 145)
(const_int 2 [0x2]) repeated x2
(const_int 0 [0])
(reg:SI 66 vl)
(reg:SI 67 vtype)
] UNSPEC_VPREDICATE)
(zero_extend:RVVM2HI (reg:RVVM1QI 144))
(unspec:RVVM2HI [
(reg:DI 0 zero)
] UNSPEC_VUNDEF))) "test.c":4:10 -1
(nil))
during RTL pass: vregs
test.c:5:1: internal compiler error: in extract_insn, at recog.cc:2882
0x2263ea9 diagnostic_context::diagnostic_impl(rich_location*,
diagnostic_metadata const*, diagnostic_option_id, char const*, void**,
diagnostic_t)
???:0
0x227033d internal_error(char const*, ...)
???:0
0x64e8cf fancy_abort(char const*, int, char const*)
???:0
0x649409 _fatal_insn(char const*, rtx_def const*, char const*, int, char
const*)
???:0
0x649427 _fatal_insn_not_found(rtx_def const*, char const*, int, char const*)
???:0
0xaf4235 extract_insn(rtx_insn*)
???:0
Please submit a full bug report, with preprocessed source (by using
-freport-bug).
Please include the complete backtrace with any bug report.
See <file:///usr/share/doc/gcc-15/README.Bugs> for instructions.
$ gcc-15 -v
Using built-in specs.
COLLECT_GCC=gcc-15
COLLECT_LTO_WRAPPER=/usr/libexec/gcc/riscv64-linux-gnu/15/lto-wrapper
Target: riscv64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Debian 15.2.0-12'
--with-bugurl=file:///usr/share/doc/gcc-15/README.Bugs
--enable-languages=c,ada,c++,go,d,fortran,objc,obj-c++,m2,rust,cobol,algol68
--prefix=/usr --with-gcc-major-version-only --program-suffix=-15
--program-prefix=riscv64-linux-gnu- --enable-shared --enable-linker-build-id
--libexecdir=/usr/libexec --without-included-gettext --enable-threads=posix
--libdir=/usr/lib --enable-nls --enable-clocale=gnu --enable-libstdcxx-debug
--enable-libstdcxx-time=yes --with-default-libstdcxx-abi=new
--enable-libstdcxx-backtrace --enable-gnu-unique-object --disable-libquadmath
--disable-libquadmath-support --enable-plugin --enable-default-pie
--with-system-zlib --enable-libphobos-checking=release
--with-target-system-zlib=auto --enable-objc-gc=auto --enable-multiarch
--disable-werror --disable-multilib --with-abi=lp64d --with-arch=rv64gc
--enable-checking=release --build=riscv64-linux-gnu --host=riscv64-linux-gnu
--target=riscv64-linux-gnu
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 15.2.0 (Debian 15.2.0-12)
