https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101863
Bug ID: 101863
Summary: ICE: in expand_vec_perm_broadcast_1, at
config/i386/i386-expand.c:20485 with -mavx512f
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 51288
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=51288&action=edit
reduced testcase
Compiler output:
$ x86_64-pc-linux-gnu-gcc -O -mavx512f testcase.c
during GIMPLE pass: forwprop
testcase.c: In function 'foo':
testcase.c:5:1: internal compiler error: in expand_vec_perm_broadcast_1, at
config/i386/i386-expand.c:20485
5 | foo (V v)
| ^~~
0x7ec0af expand_vec_perm_broadcast_1
/repo/gcc-trunk/gcc/config/i386/i386-expand.c:20485
0x14e662f expand_vec_perm_broadcast
/repo/gcc-trunk/gcc/config/i386/i386-expand.c:20505
0x14e662f ix86_expand_vec_perm_const_1
/repo/gcc-trunk/gcc/config/i386/i386-expand.c:20716
0x14e662f ix86_expand_vec_perm_const_1
/repo/gcc-trunk/gcc/config/i386/i386-expand.c:20699
0x150e3de ix86_vectorize_vec_perm_const(machine_mode, rtx_def*, rtx_def*,
rtx_def*, vec_perm_indices const&)
/repo/gcc-trunk/gcc/config/i386/i386-expand.c:21002
0x11e68b4 simplify_vector_constructor
/repo/gcc-trunk/gcc/tree-ssa-forwprop.c:2670
0x11e68b4 execute
/repo/gcc-trunk/gcc/tree-ssa-forwprop.c:3405
Please submit a full bug report,
with preprocessed source if appropriate.
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/bin/x86_64-pc-linux-gnu-gcc
COLLECT_LTO_WRAPPER=/repo/gcc-trunk/binary-trunk-r12-2846-20210811072927-ga45918f8a74-checking-yes-rtl-df-extra-amd64/bin/../libexec/gcc/x86_64-pc-linux-gnu/12.0.0/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
--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-r12-2846-20210811072927-ga45918f8a74-checking-yes-rtl-df-extra-amd64
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 12.0.0 20210811 (experimental) (GCC)
