[Bug c/81319] New: ICE in output_operand_lossage at final.c

["zeccav at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81319

            Bug ID: 81319
           Summary: ICE in output_operand_lossage at final.c
           Product: gcc
           Version: 8.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
          Assignee: unassigned at gcc dot gnu.org
          Reporter: zeccav at gmail dot com
  Target Milestone: ---

/* from shrink-wrap-separate-0.c */
/* in trunk 249883 */
/* ICE in output_operand_lossage at final.c */
void f(int x)
{
        register int r20 asm("20") = x;
}
/*
 * In function ‘f’:
error: frame cannot be used in asm here
 }
 ^
during RTL pass: final
internal compiler error: output_operand: invalid use of register 'frame'
0x975982 output_operand_lossage(char const*, ...)
        ../../gcc-249883/gcc/final.c:3459
0xf9a37c ix86_print_operand(_IO_FILE*, rtx_def*, int)
        ../../gcc-249883/gcc/config/i386/i386.c:19181
0x975c71 output_operand(rtx_def*, int)
        ../../gcc-249883/gcc/final.c:3893
0x97670f output_asm_insn(char const*, rtx_def**)
        ../../gcc-249883/gcc/final.c:3809
0x9777d7 final_scan_insn(rtx_insn*, _IO_FILE*, int, int, int*)
        ../../gcc-249883/gcc/final.c:3060
0x978cca final(rtx_insn*, _IO_FILE*, int)
        ../../gcc-249883/gcc/final.c:2053
0x979099 rest_of_handle_final
        ../../gcc-249883/gcc/final.c:4494
0x979099 execute
        ../../gcc-249883/gcc/final.c:4567
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.