https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111745
Bug ID: 111745
Summary: [14 Regression] ICE: in extract_insn, at recog.cc:2791
(unrecognizable insn) with -ffloat-store -mavx512fp16
-mavx512vl
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: x86_64-pc-linux-gnu
Created attachment 56083
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=56083&action=edit
reduced testcase
Compiler output:
$ x86_64-pc-linux-gnu-gcc -ffloat-store -mavx512fp16 -mavx512vl testcase.c
testcase.c: In function 'foo':
testcase.c:8:1: error: unrecognizable insn:
8 | }
| ^
(insn 54 53 55 2 (set (reg:V8HF 136)
(vec_concat:V8HF (mem:V4HF (plus:DI (reg/f:DI 93 virtual-stack-vars)
(const_int -16 [0xfffffffffffffff0])) [1 S8 A64])
(reg:V4HF 139))) "testcase.c":7:5 -1
(nil))
during RTL pass: vregs
testcase.c:8:1: internal compiler error: in extract_insn, at recog.cc:2791
0x7e765b _fatal_insn(char const*, rtx_def const*, char const*, int, char
const*)
/repo/gcc-trunk/gcc/rtl-error.cc:108
0x7e76d8 _fatal_insn_not_found(rtx_def const*, char const*, int, char const*)
/repo/gcc-trunk/gcc/rtl-error.cc:116
0x7d63fd extract_insn(rtx_insn*)
/repo/gcc-trunk/gcc/recog.cc:2791
0x10e7995 instantiate_virtual_regs_in_insn
/repo/gcc-trunk/gcc/function.cc:1610
0x10e7995 instantiate_virtual_regs
/repo/gcc-trunk/gcc/function.cc:1983
0x10e7995 execute
/repo/gcc-trunk/gcc/function.cc:2030
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-r14-4520-20231009121517-gb0892b1fc63-checking-yes-rtl-df-extra-nobootstrap-amd64/bin/../libexec/gcc/x86_64-pc-linux-gnu/14.0.0/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-r14-4520-20231009121517-gb0892b1fc63-checking-yes-rtl-df-extra-nobootstrap-amd64
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 14.0.0 20231009 (experimental) (GCC)
