Merging r195591:

Merging r195591:
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r195591 | haoliu | 2013-11-24 17:53:26 -0800 (Sun, 24 Nov 2013) | 5 lines

Fixed a bug about disassembling AArch64 post-index load/store single element instructions.
ie. echo "0x00 0x04 0x80 0x0d" | ../bin/llvm-mc -triple=aarch64 -mattr=+neon -disassemble
    echo "0x00 0x00 0x80 0x0d" | ../bin/llvm-mc -triple=aarch64 -mattr=+neon -disassemble
will be disassembled into the same instruction st1 {v0b}[0], [x0], x0.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/release_34@195619 91177308-0d34-0410-b5e6-96231b3b80d8