https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104469
Bug ID: 104469
Summary: ICE: in extract_insn, at recog.cc:2769 (unrecognizable
insn) with -mavx and __builtin_convertvector()
Product: gcc
Version: 12.0
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: x86_64-pc-linux-gnu
Created attachment 52394
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=52394&action=edit
reduced testcase
Compiler output:
$ x86_64-pc-linux-gnu-gcc -mavx testcase.c
testcase.c: In function 'foo':
testcase.c:6:1: warning: AVX512F vector return without AVX512F enabled changes
the ABI [-Wpsabi]
6 | {
| ^
testcase.c:8:1: error: unrecognizable insn:
8 | }
| ^
(insn 8 7 9 2 (set (reg:V4SI 84)
(vec_select:V4SI (mem/c:V8SI (plus:DI (reg/f:DI 77 virtual-stack-vars)
(const_int -128 [0xffffffffffffff80])) [3 v+0 S32 A256])
(parallel [
(const_int 4 [0x4])
(const_int 5 [0x5])
(const_int 6 [0x6])
(const_int 7 [0x7])
]))) "testcase.c":7:10 -1
(nil))
during RTL pass: vregs
testcase.c:8:1: internal compiler error: in extract_insn, at recog.cc:2769
0x769df8 _fatal_insn(char const*, rtx_def const*, char const*, int, char
const*)
/repo/gcc-trunk/gcc/rtl-error.cc:108
0x769e7b _fatal_insn_not_found(rtx_def const*, char const*, int, char const*)
/repo/gcc-trunk/gcc/rtl-error.cc:116
0x75872d extract_insn(rtx_insn*)
/repo/gcc-trunk/gcc/recog.cc:2769
0x100efe2 instantiate_virtual_regs_in_insn
/repo/gcc-trunk/gcc/function.cc:1611
0x100efe2 instantiate_virtual_regs
/repo/gcc-trunk/gcc/function.cc:1985
0x100efe2 execute
/repo/gcc-trunk/gcc/function.cc:2034
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.
$ x86_64-pc-linux-gnu-gcc -v
Using built-in specs.
COLLECT_GCC=/repo/gcc-trunk/binary-latest-amd64/bin/x86_64-pc-linux-gnu-gcc
COLLECT_LTO_WRAPPER=/repo/gcc-trunk/binary-trunk-r12-7128-20220209090954-gc6bb1db76b3-checking-yes-rtl-df-extra-nobootstrap-amd64/bin/../libexec/gcc/x86_64-pc-linux-gnu/12.0.1/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: /repo/gcc-trunk//configure --enable-languages=c,c++
--enable-valgrind-annotations --disable-nls --enable-checking=yes,rtl,df,extra
--disable-bootstrap --with-cloog --with-ppl --with-isl
--build=x86_64-pc-linux-gnu --host=x86_64-pc-linux-gnu
--target=x86_64-pc-linux-gnu --with-ld=/usr/bin/x86_64-pc-linux-gnu-ld
--with-as=/usr/bin/x86_64-pc-linux-gnu-as --disable-libstdcxx-pch
--prefix=/repo/gcc-trunk//binary-trunk-r12-7128-20220209090954-gc6bb1db76b3-checking-yes-rtl-df-extra-nobootstrap-amd64
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 12.0.1 20220209 (experimental) (GCC)
