https://gcc.gnu.org/bugzilla/show_bug.cgi?id=123484
Bug ID: 123484
Summary: [14/15/16 Regression] ICE: in expand_mult, at
expmed.cc:3633 with -Ofast -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: i686-pc-linux-gnu
Created attachment 63283
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=63283&action=edit
reduced testcase
Compiler output:
$ x86_64-pc-linux-gnu-gcc -Ofast -m32 -march=graniterapids-d testcase.c
during RTL pass: expand
testcase.c: In function 'foo':
testcase.c:9:7: internal compiler error: in expand_mult, at expmed.cc:3633
9 | f /= b ? *p : (F){40};
| ^~
0x2c87f4d internal_error(char const*, ...)
/repo/gcc-trunk/gcc/diagnostic-global-context.cc:787
0xe2975f fancy_abort(char const*, int, char const*)
/repo/gcc-trunk/gcc/diagnostics/context.cc:1805
0x7d5eb2 expand_mult(machine_mode, rtx_def*, rtx_def*, rtx_def*, int, bool)
/repo/gcc-trunk/gcc/expmed.cc:3633
0x115ade3 expand_expr_real_gassign(gassign*, rtx_def*, machine_mode,
expand_modifier, rtx_def**, bool)
/repo/gcc-trunk/gcc/expr.cc:11336
0x100ebbc expand_gimple_stmt_1
/repo/gcc-trunk/gcc/cfgexpand.cc:4319
0x100ebbc expand_gimple_stmt
/repo/gcc-trunk/gcc/cfgexpand.cc:4383
0x1010517 expand_gimple_basic_block
/repo/gcc-trunk/gcc/cfgexpand.cc:6502
0x1012a27 execute
/repo/gcc-trunk/gcc/cfgexpand.cc:7249
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-20260108142325-r16-6577-g6225251b90056f-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-20260108142325-r16-6577-g6225251b90056f-checking-yes-rtl-df-extra-nobootstrap-amd64
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 16.0.0 20260108 (experimental) (GCC)
