[Bug binutils/20795] New: [PowerPC] RLMI instruction deprecated but still decodes for PowerPC 64

[nholcomb at wisc dot edu]

https://sourceware.org/bugzilla/show_bug.cgi?id=20795

            Bug ID: 20795
           Summary: [PowerPC] RLMI instruction deprecated but still
                    decodes for PowerPC 64
           Product: binutils
           Version: 2.26
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: binutils
          Assignee: unassigned at sourceware dot org
          Reporter: nholcomb at wisc dot edu
  Target Milestone: ---

The RLMI instruction was deprecated from POWER to PowerPC but is produced
during decoding of PowerPC 64.

Example:
Bytes: 59 2f c9 16
Output: rlmi r15, r9, r25, 4, 11

Here's a snippet the C code used for decoding (forces ppc64):

    disassemble_info disInfo;
    INIT_DISASSEMBLE_INFO(disInfo, out_file, (fprintf_ftype)fprintf);
    disInfo.buffer = (bfd_byte*)(inst);
    disInfo.buffer_length = nBytes;
    disInfo.arch = bfd_arch_powerpc;
    disInfo.mach = bfd_mach_ppc64;
    disassemble_init_powerpc (&disInfo);

    int rc = print_insn_big_powerpc((bfd_vma)0, &disInfo);

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