https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104478
Bug ID: 104478
Summary: [12 Regression] ICE: in native_encode_rtx, at
simplify-rtx.cc:6862 with -mcpu=neoverse-v1
-frounding-math -msve-vector-bits=256
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: aarch64-unknown-linux-gnu
Created attachment 52400
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=52400&action=edit
reduced testcase
Compiler output:
$ aarch64-unknown-linux-gnu-gcc -mcpu=neoverse-v1 -frounding-math
-msve-vector-bits=256 testcase.c
during RTL pass: expand
testcase.c: In function 'foo':
testcase.c:6:10: internal compiler error: in native_encode_rtx, at
simplify-rtx.cc:6862
6 | return (F){0, 6270, 0, 0, 0, 0, 0, 0, 3229, 0, 40};
| ^
0x7aefdc native_encode_rtx(machine_mode, rtx_def*, vec<unsigned char, va_heap,
vl_ptr>&, unsigned int, unsigned int)
/repo/gcc-trunk/gcc/simplify-rtx.cc:6862
0x110fe2c native_encode_rtx(machine_mode, rtx_def*, vec<unsigned char, va_heap,
vl_ptr>&, unsigned int, unsigned int)
/repo/gcc-trunk/gcc/simplify-rtx.cc:6900
0x1110ad9 simplify_const_vector_subreg
/repo/gcc-trunk/gcc/simplify-rtx.cc:7249
0x11249bb simplify_context::simplify_subreg(machine_mode, rtx_def*,
machine_mode, poly_int<2u, unsigned long>)
/repo/gcc-trunk/gcc/simplify-rtx.cc:7370
0x1126a91 simplify_context::simplify_gen_subreg(machine_mode, rtx_def*,
machine_mode, poly_int<2u, unsigned long>)
/repo/gcc-trunk/gcc/simplify-rtx.cc:7602
0x14d4ef0 simplify_gen_subreg(machine_mode, rtx_def*, machine_mode,
poly_int<2u, unsigned long>)
/repo/gcc-trunk/gcc/rtl.h:3534
0x14d4ef0 aarch64_expand_sve_const_vector
/repo/gcc-trunk/gcc/config/aarch64/aarch64.cc:5545
0x14d6fa2 aarch64_expand_mov_immediate(rtx_def*, rtx_def*)
/repo/gcc-trunk/gcc/config/aarch64/aarch64.cc:6075
0x19bf387 gen_movvnx8qi(rtx_def*, rtx_def*)
/repo/gcc-trunk/gcc/config/aarch64/aarch64-sve.md:662
0xd5e634 rtx_insn* insn_gen_fn::operator()<rtx_def*, rtx_def*>(rtx_def*,
rtx_def*) const
/repo/gcc-trunk/gcc/recog.h:407
0xd5e634 emit_move_insn_1(rtx_def*, rtx_def*)
/repo/gcc-trunk/gcc/expr.cc:3955
0xd5ea8d emit_move_insn(rtx_def*, rtx_def*)
/repo/gcc-trunk/gcc/expr.cc:4125
0x14d2005 aarch64_sve_expand_vector_init_handle_trailing_constants
/repo/gcc-trunk/gcc/config/aarch64/aarch64.cc:21171
0x14d3957 aarch64_sve_expand_vector_init
/repo/gcc-trunk/gcc/config/aarch64/aarch64.cc:21293
0x14d3b33 aarch64_sve_expand_vector_init
/repo/gcc-trunk/gcc/config/aarch64/aarch64.cc:21333
0x14d3e32 aarch64_sve_expand_vector_init(rtx_def*, rtx_def*)
/repo/gcc-trunk/gcc/config/aarch64/aarch64.cc:21377
0x19e03bc ???
/repo/gcc-trunk/gcc/config/aarch64/aarch64-sve.md:2639
0xd6c418 rtx_insn* insn_gen_fn::operator()<rtx_def*, rtx_def*>(rtx_def*,
rtx_def*) const
/repo/gcc-trunk/gcc/recog.h:407
0xd6c418 store_constructor
/repo/gcc-trunk/gcc/expr.cc:7319
0xd6ebe8 expand_constructor
/repo/gcc-trunk/gcc/expr.cc:8657
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-r12-7143-20220209111047-ged3fea09b18-checking-yes-rtl-df-extra-aarch64/bin/../libexec/gcc/aarch64-unknown-linux-gnu/12.0.1/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
--with-cloog --with-ppl --with-isl
--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-r12-7143-20220209111047-ged3fea09b18-checking-yes-rtl-df-extra-aarch64
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 12.0.1 20220209 (experimental) (GCC)
