https://gcc.gnu.org/bugzilla/show_bug.cgi?id=123498
Bug ID: 123498
Summary: ICE: output_operand: floating constant misused with
__bf16 and -m32
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 63295
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=63295&action=edit
reduced testcase
Compiler output:
$ x86_64-pc-linux-gnu-gcc -O -m32 testcase.c
during RTL pass: final
testcase.c: In function 'foo':
testcase.c:17:1: internal compiler error: output_operand: floating constant
misused
17 | }
| ^
0x2c87f4d internal_error(char const*, ...)
/repo/gcc-trunk/gcc/diagnostic-global-context.cc:787
0x11713ef output_operand_lossage(char const*, ...)
/repo/gcc-trunk/gcc/final.cc:3206
0x1171761 output_operand(rtx_def*, int)
/repo/gcc-trunk/gcc/final.cc:3651
0x117277b output_asm_insn(char const*, rtx_def**)
/repo/gcc-trunk/gcc/final.cc:3544
0x117691d final_scan_insn_1
/repo/gcc-trunk/gcc/final.cc:2856
0x1176eeb final_scan_insn(rtx_insn*, _IO_FILE*, int, int, int*)
/repo/gcc-trunk/gcc/final.cc:2902
0x1177132 final_1
/repo/gcc-trunk/gcc/final.cc:1984
0x1177db1 rest_of_handle_final
/repo/gcc-trunk/gcc/final.cc:4260
0x1177db1 execute
/repo/gcc-trunk/gcc/final.cc:4338
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)
