as: ARM-Neon-Alignment

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1 9.4.2.5 NEON Alignment Specifiers
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1 Some NEON load/store instructions allow an optional address alignment
1 qualifier.  The ARM documentation specifies that this is indicated by '@
1 ALIGN'.  However GAS already interprets the '@' character as a "line
1 comment" start, so ': ALIGN' is used instead.  For example:
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1              vld1.8 {q0}, [r0, :128]
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