Saleem Abdulrasool 003132d48c ARM IAS: support GNU extension for ldrd, strd
The GNU assembler has an extension that allows for the elision of the paired
register (dt2) for the LDRD and STRD mnemonics.  Add support for this in the
assembly parser.  Canonicalise the usage during the instruction parsing from
the specified version.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198915 91177308-0d34-0410-b5e6-96231b3b80d8
2014-01-10 04:38:35 +00:00
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