https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121716
Bug ID: 121716
Summary: [16 Regression] ICE: RTL check: expected code
'const_int', have 'reg' in
ix86_vgf2p8affine_shift_matrix, at
config/i386/i386-expand.cc:27107 with
-march=graniterapids-d
Product: gcc
Version: 16.0
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 62227
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=62227&action=edit
reduced testcase
This might need RTL checking enabled.
Compiler output:
$ x86_64-pc-linux-gnu-gcc -O1 -march=graniterapids-d testcase.c
during RTL pass: expand
testcase.c: In function 'foo':
testcase.c:8:6: internal compiler error: RTL check: expected code 'const_int',
have 'reg' in ix86_vgf2p8affine_shift_matrix, at
config/i386/i386-expand.cc:27107
8 | v = (V){} >= a | (V){1} << b;
| ~~^~~~~~~~~~~~~~~~~~~~~~~~~~
0x2b96291 internal_error(char const*, ...)
/repo/gcc-trunk/gcc/diagnostic-global-context.cc:534
0x8805a6 rtl_check_failed_code1(rtx_def const*, rtx_code, char const*, int,
char const*)
/repo/gcc-trunk/gcc/rtl.cc:770
0x9699d8 ix86_vgf2p8affine_shift_matrix(rtx_def*, rtx_def*, rtx_code)
/repo/gcc-trunk/gcc/config/i386/i386-expand.cc:27107
0x2330fc0 gen_cond_ashlv16qi(rtx_def*, rtx_def*, rtx_def*, rtx_def*, rtx_def*)
/repo/gcc-trunk/gcc/config/i386/sse.md:27015
0x144fbd8 maybe_expand_insn(insn_code, unsigned int, expand_operand*)
/repo/gcc-trunk/gcc/optabs.cc:8257
0x144fbd8 expand_insn(insn_code, unsigned int, expand_operand*)
/repo/gcc-trunk/gcc/optabs.cc:8288
0x129fb42 expand_fn_using_insn
/repo/gcc-trunk/gcc/internal-fn.cc:318
0x112a370 expand_expr_real_1(tree_node*, rtx_def*, machine_mode,
expand_modifier, rtx_def**, bool)
/repo/gcc-trunk/gcc/expr.cc:11443
0x113525d store_expr(tree_node*, rtx_def*, int, bool, bool)
/repo/gcc-trunk/gcc/expr.cc:6766
0x1137e4f expand_assignment(tree_node*, tree_node*, bool)
/repo/gcc-trunk/gcc/expr.cc:6487
0x1137e4f expand_assignment(tree_node*, tree_node*, bool)
/repo/gcc-trunk/gcc/expr.cc:5975
0xfe6b80 expand_gimple_stmt_1
/repo/gcc-trunk/gcc/cfgexpand.cc:4301
0xfe6b80 expand_gimple_stmt
/repo/gcc-trunk/gcc/cfgexpand.cc:4382
0xfe8d07 expand_gimple_basic_block
/repo/gcc-trunk/gcc/cfgexpand.cc:6501
0xfeb107 execute
/repo/gcc-trunk/gcc/cfgexpand.cc:7248
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-20250829043019-r16-3452-g2cb3fb032de455-checking-yes-rtl-df-extra-nobootstrap-amd64/bin/../libexec/gcc/x86_64-pc-linux-gnu/16.0.0/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 --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 --enable-libsanitizer
--disable-libstdcxx-pch
--prefix=/repo/gcc-trunk//binary-trunk-20250829043019-r16-3452-g2cb3fb032de455-checking-yes-rtl-df-extra-nobootstrap-amd64
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 16.0.0 20250829 (experimental) (GCC)
