[Bug binutils/27023] New: [ARM]: ldrd/strd without second transfer register

[husseydevin at gmail dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=27023

            Bug ID: 27023
           Summary: [ARM]: ldrd/strd without second transfer register
           Product: binutils
           Version: 2.35.1
            Status: UNCONFIRMED
          Severity: minor
          Priority: P2
         Component: binutils
          Assignee: unassigned at sourceware dot org
          Reporter: husseydevin at gmail dot com
  Target Milestone: ---

ARM objdump annotates ldrd/strd with only one transfer register.

So, for example, 

     ldrd    r0, r1, [r2]
     strd    r0, r1, [r2]

Will dump as

     ldrd    r0, [r2]
     strd    r0, [r2]

Both registers should be annotated:

 - It matches the ARM documentation
 - It matches the behavior of llvm-objdump and radare2
 - It will be impossible to mix up with ldrb/strb, as they no longer line up
visually

Additionally, gas *accepts* this one operand syntax. Is this intentional?

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