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  15. A GNU Manual

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  25. <title>MIPS SIMD Architecture (MSA) Support (Using the GNU Compiler Collection (GCC))</title>

  26. 

  27. <meta name="description" content="MIPS SIMD Architecture (MSA) Support (Using the GNU Compiler Collection (GCC))">

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  35. <link href="Target-Builtins.html#Target-Builtins" rel="up" title="Target Builtins">

  36. <link href="MIPS-SIMD-Architecture-Built_002din-Functions.html#MIPS-SIMD-Architecture-Built_002din-Functions" rel="next" title="MIPS SIMD Architecture Built-in Functions">

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  69. <body lang="en">

  70. <a name="MIPS-SIMD-Architecture-_0028MSA_0029-Support"></a>

  71. <div class="header">

  72. <p>

  73. Next: <a href="Other-MIPS-Built_002din-Functions.html#Other-MIPS-Built_002din-Functions" accesskey="n" rel="next">Other MIPS Built-in Functions</a>, Previous: <a href="MIPS-Loongson-Built_002din-Functions.html#MIPS-Loongson-Built_002din-Functions" accesskey="p" rel="prev">MIPS Loongson Built-in Functions</a>, Up: <a href="Target-Builtins.html#Target-Builtins" accesskey="u" rel="up">Target Builtins</a> &nbsp; [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Option-Index.html#Option-Index" title="Index" rel="index">Index</a>]</p>

  74. </div>

  75. <hr>

  76. <a name="MIPS-SIMD-Architecture-_0028MSA_0029-Support-1"></a>

  77. <h4 class="subsection">6.60.17 MIPS SIMD Architecture (MSA) Support</h4>

  78. 

  79. <table class="menu" border="0" cellspacing="0">

  80. <tr><td align="left" valign="top">&bull; <a href="MIPS-SIMD-Architecture-Built_002din-Functions.html#MIPS-SIMD-Architecture-Built_002din-Functions" accesskey="1">MIPS SIMD Architecture Built-in Functions</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">

  81. </td></tr>

  82. </table>

  83. 

  84. <p>GCC provides intrinsics to access the SIMD instructions provided by the

  85. MSA MIPS SIMD Architecture.  The interface is made available by including

  86. <code>&lt;msa.h&gt;</code> and using <samp>-mmsa -mhard-float -mfp64 -mnan=2008</samp>.

  87. For each <code>__builtin_msa_*</code>, there is a shortened name of the intrinsic,

  88. <code>__msa_*</code>.

  89. </p>

  90. <p>MSA implements 128-bit wide vector registers, operating on 8-, 16-, 32- and

  91. 64-bit integer, 16- and 32-bit fixed-point, or 32- and 64-bit floating point

  92. data elements.  The following vectors typedefs are included in <code>msa.h</code>:

  93. </p><ul>

  94. <li> <code>v16i8</code>, a vector of sixteen signed 8-bit integers;

  95. </li><li> <code>v16u8</code>, a vector of sixteen unsigned 8-bit integers;

  96. </li><li> <code>v8i16</code>, a vector of eight signed 16-bit integers;

  97. </li><li> <code>v8u16</code>, a vector of eight unsigned 16-bit integers;

  98. </li><li> <code>v4i32</code>, a vector of four signed 32-bit integers;

  99. </li><li> <code>v4u32</code>, a vector of four unsigned 32-bit integers;

  100. </li><li> <code>v2i64</code>, a vector of two signed 64-bit integers;

  101. </li><li> <code>v2u64</code>, a vector of two unsigned 64-bit integers;

  102. </li><li> <code>v4f32</code>, a vector of four 32-bit floats;

  103. </li><li> <code>v2f64</code>, a vector of two 64-bit doubles.

  104. </li></ul>

  105. 

  106. <p>Instructions and corresponding built-ins may have additional restrictions and/or

  107. input/output values manipulated:

  108. </p><ul>

  109. <li> <code>imm0_1</code>, an integer literal in range 0 to 1;

  110. </li><li> <code>imm0_3</code>, an integer literal in range 0 to 3;

  111. </li><li> <code>imm0_7</code>, an integer literal in range 0 to 7;

  112. </li><li> <code>imm0_15</code>, an integer literal in range 0 to 15;

  113. </li><li> <code>imm0_31</code>, an integer literal in range 0 to 31;

  114. </li><li> <code>imm0_63</code>, an integer literal in range 0 to 63;

  115. </li><li> <code>imm0_255</code>, an integer literal in range 0 to 255;

  116. </li><li> <code>imm_n16_15</code>, an integer literal in range -16 to 15;

  117. </li><li> <code>imm_n512_511</code>, an integer literal in range -512 to 511;

  118. </li><li> <code>imm_n1024_1022</code>, an integer literal in range -512 to 511 left

  119. shifted by 1 bit, i.e., -1024, -1022, &hellip;, 1020, 1022;

  120. </li><li> <code>imm_n2048_2044</code>, an integer literal in range -512 to 511 left

  121. shifted by 2 bits, i.e., -2048, -2044, &hellip;, 2040, 2044;

  122. </li><li> <code>imm_n4096_4088</code>, an integer literal in range -512 to 511 left

  123. shifted by 3 bits, i.e., -4096, -4088, &hellip;, 4080, 4088;

  124. </li><li> <code>imm1_4</code>, an integer literal in range 1 to 4;

  125. </li><li> <code>i32, i64, u32, u64, f32, f64</code>, defined as follows:

  126. </li></ul>

  127. 

  128. <div class="smallexample">

  129. <pre class="smallexample">{

  130. typedef int i32;

  131. #if __LONG_MAX__ == __LONG_LONG_MAX__

  132. typedef long i64;

  133. #else

  134. typedef long long i64;

  135. #endif

  136. 

  137. typedef unsigned int u32;

  138. #if __LONG_MAX__ == __LONG_LONG_MAX__

  139. typedef unsigned long u64;

  140. #else

  141. typedef unsigned long long u64;

  142. #endif

  143. 

  144. typedef double f64;

  145. typedef float f32;

  146. }

  147. </pre></div>

  148. 

  149. <hr>

  150. <div class="header">

  151. <p>

  152. Next: <a href="Other-MIPS-Built_002din-Functions.html#Other-MIPS-Built_002din-Functions" accesskey="n" rel="next">Other MIPS Built-in Functions</a>, Previous: <a href="MIPS-Loongson-Built_002din-Functions.html#MIPS-Loongson-Built_002din-Functions" accesskey="p" rel="prev">MIPS Loongson Built-in Functions</a>, Up: <a href="Target-Builtins.html#Target-Builtins" accesskey="u" rel="up">Target Builtins</a> &nbsp; [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Option-Index.html#Option-Index" title="Index" rel="index">Index</a>]</p>

  153. </div>

  154. 

  155. 

  156. 

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