ARM_002dNeon_002dAlignment.html 3.7 KB

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  14. <title>Using as: ARM-Neon-Alignment</title>
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  57. <a name="ARM_002dNeon_002dAlignment"></a>
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  63. <a name="NEON-Alignment-Specifiers"></a>
  64. <h4 class="subsubsection">9.4.2.5 NEON Alignment Specifiers</h4>
  65. <a name="index-alignment-for-NEON-instructions"></a>
  66. <p>Some NEON load/store instructions allow an optional address
  67. alignment qualifier.
  68. The ARM documentation specifies that this is indicated by
  69. &lsquo;<samp>@ <var>align</var></samp>&rsquo;. However GAS already interprets
  70. the &lsquo;<samp>@</samp>&rsquo; character as a &quot;line comment&quot; start,
  71. so &lsquo;<samp>: <var>align</var></samp>&rsquo; is used instead. For example:
  72. </p>
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  74. <pre class="smallexample"> vld1.8 {q0}, [r0, :128]
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