[Bug c/102761] New: ICE with -O1 and above: in ix86_print_operand_address_as, at config/i386/i386.c:13720

[cnsun at uwaterloo dot ca via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102761

            Bug ID: 102761
           Summary: ICE with -O1 and above: in
                    ix86_print_operand_address_as, at
                    config/i386/i386.c:13720
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
          Assignee: unassigned at gcc dot gnu.org
          Reporter: cnsun at uwaterloo dot ca
  Target Milestone: ---

$ gcc-trunk -v
Using built-in specs.
COLLECT_GCC=gcc-trunk
COLLECT_LTO_WRAPPER=/scratch/software/gcc-trunk/libexec/gcc/x86_64-pc-linux-gnu/12.0.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: /tmp/tmp.gzh6IUhxke-gcc-builder/gcc/configure
--enable-languages=c,c++,lto --enable-checking-yes --enable-multiarch
--prefix=/scratch/software/gcc-trunk --disable-bootstrap
Thread model: posix
Supported LTO compression algorithms: zlib
gcc version 12.0.0 20211014 (experimental) [master -gee9fa8a57] (GCC)

$ cat mutant.c
f() { asm("%a0" : : "X"(tag() ? 2 : 1)); }

$ gcc-trunk -w -O1 mutant.c
during RTL pass: final
mutant.c: In function ‘f’:
mutant.c:1:42: internal compiler error: in ix86_print_operand_address_as, at
config/i386/i386.c:13720
    1 | f() { asm("%a0" : : "X"(tag() ? 2 : 1)); }
      |                                          ^
0x83f47a ix86_print_operand_address_as
        /tmp/tmp.gzh6IUhxke-gcc-builder/gcc/gcc/config/i386/i386.c:13720
0xbe46e7 output_address(machine_mode, rtx_def*)
        /tmp/tmp.gzh6IUhxke-gcc-builder/gcc/gcc/final.c:3693
0xbe532e output_asm_insn(char const*, rtx_def**)
        /tmp/tmp.gzh6IUhxke-gcc-builder/gcc/gcc/final.c:3550
0xbe7612 final_scan_insn_1
        /tmp/tmp.gzh6IUhxke-gcc-builder/gcc/gcc/final.c:2690
0xbe789f final_scan_insn(rtx_insn*, _IO_FILE*, int, int, int*)
        /tmp/tmp.gzh6IUhxke-gcc-builder/gcc/gcc/final.c:2940
0xbe7b67 final_1
        /tmp/tmp.gzh6IUhxke-gcc-builder/gcc/gcc/final.c:1997
0xbe8598 rest_of_handle_final
        /tmp/tmp.gzh6IUhxke-gcc-builder/gcc/gcc/final.c:4285
0xbe8598 execute
        /tmp/tmp.gzh6IUhxke-gcc-builder/gcc/gcc/final.c:4363
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.