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[Bug binutils/20667] New: [libopcodes][Aarch64] IC ivau omits register o


From: njholcomb at wi dot rr.com
Subject: [Bug binutils/20667] New: [libopcodes][Aarch64] IC ivau omits register operand if it's the zero register
Date: Tue, 04 Oct 2016 19:11:18 +0000

https://sourceware.org/bugzilla/show_bug.cgi?id=20667

            Bug ID: 20667
           Summary: [libopcodes][Aarch64] IC ivau omits register operand
                    if it's the zero register
           Product: binutils
           Version: 2.26
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: binutils
          Assignee: unassigned at sourceware dot org
          Reporter: njholcomb at wi dot rr.com
  Target Milestone: ---

Decoding the bytes: 0xd50b753f 

Should produce: ic ivau, xzr
Instead produces: ic ivau

I tested by attempting to assemble the instruction "ic ivau" and received the
following error from gas:
Error: missing register at operand 2 -- `ic ivau'

This problem does not exist for other register operands.

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