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<div class="title">transform.hpp</div> </div>
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<a href="transform_8hpp.xhtml">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span>&#160;<span class="comment">/*</span></div><div class="line"><a name="l00002"></a><span class="lineno"> 2</span>&#160;<span class="comment"> * Copyright (c) 2017-2019 ARM Limited.</span></div><div class="line"><a name="l00003"></a><span class="lineno"> 3</span>&#160;<span class="comment"> *</span></div><div class="line"><a name="l00004"></a><span class="lineno"> 4</span>&#160;<span class="comment"> * SPDX-License-Identifier: MIT</span></div><div class="line"><a name="l00005"></a><span class="lineno"> 5</span>&#160;<span class="comment"> *</span></div><div class="line"><a name="l00006"></a><span class="lineno"> 6</span>&#160;<span class="comment"> * Permission is hereby granted, free of charge, to any person obtaining a copy</span></div><div class="line"><a name="l00007"></a><span class="lineno"> 7</span>&#160;<span class="comment"> * of this software and associated documentation files (the &quot;Software&quot;), to</span></div><div class="line"><a name="l00008"></a><span class="lineno"> 8</span>&#160;<span class="comment"> * deal in the Software without restriction, including without limitation the</span></div><div class="line"><a name="l00009"></a><span class="lineno"> 9</span>&#160;<span class="comment"> * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or</span></div><div class="line"><a name="l00010"></a><span class="lineno"> 10</span>&#160;<span class="comment"> * sell copies of the Software, and to permit persons to whom the Software is</span></div><div class="line"><a name="l00011"></a><span class="lineno"> 11</span>&#160;<span class="comment"> * furnished to do so, subject to the following conditions:</span></div><div class="line"><a name="l00012"></a><span class="lineno"> 12</span>&#160;<span class="comment"> *</span></div><div class="line"><a name="l00013"></a><span class="lineno"> 13</span>&#160;<span class="comment"> * The above copyright notice and this permission notice shall be included in all</span></div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span>&#160;<span class="comment"> * copies or substantial portions of the Software.</span></div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span>&#160;<span class="comment"> *</span></div><div class="line"><a name="l00016"></a><span class="lineno"> 16</span>&#160;<span class="comment"> * THE SOFTWARE IS PROVIDED &quot;AS IS&quot;, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR</span></div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span>&#160;<span class="comment"> * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,</span></div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span>&#160;<span class="comment"> * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE</span></div><div class="line"><a name="l00019"></a><span class="lineno"> 19</span>&#160;<span class="comment"> * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER</span></div><div class="line"><a name="l00020"></a><span class="lineno"> 20</span>&#160;<span class="comment"> * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,</span></div><div class="line"><a name="l00021"></a><span class="lineno"> 21</span>&#160;<span class="comment"> * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE</span></div><div class="line"><a name="l00022"></a><span class="lineno"> 22</span>&#160;<span class="comment"> * SOFTWARE.</span></div><div class="line"><a name="l00023"></a><span class="lineno"> 23</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00024"></a><span class="lineno"> 24</span>&#160;<span class="preprocessor">#pragma once</span></div><div class="line"><a name="l00025"></a><span class="lineno"> 25</span>&#160;</div><div class="line"><a name="l00026"></a><span class="lineno"> 26</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="utils_8hpp.xhtml">utils.hpp</a>&quot;</span></div><div class="line"><a name="l00027"></a><span class="lineno"> 27</span>&#160;</div><div class="line"><a name="l00028"></a><span class="lineno"> 28</span>&#160;<span class="keyword">namespace </span><a class="code" href="namespacearm__gemm.xhtml">arm_gemm</a> {</div><div class="line"><a name="l00029"></a><span class="lineno"> 29</span>&#160;</div><div class="line"><a name="l00030"></a><span class="lineno"> 30</span>&#160;<span class="comment">/*</span></div><div class="line"><a name="l00031"></a><span class="lineno"> 31</span>&#160;<span class="comment"> * Generic transform.</span></div><div class="line"><a name="l00032"></a><span class="lineno"> 32</span>&#160;<span class="comment"> *</span></div><div class="line"><a name="l00033"></a><span class="lineno"> 33</span>&#160;<span class="comment"> * Assuming the untransposed case, this works by first reading &lt;BlockBy&gt;</span></div><div class="line"><a name="l00034"></a><span class="lineno"> 34</span>&#160;<span class="comment"> * consecutive values from the first input row. This same number of values</span></div><div class="line"><a name="l00035"></a><span class="lineno"> 35</span>&#160;<span class="comment"> * are then read from the next &lt;IntBy-1&gt; rows. Now return to the first</span></div><div class="line"><a name="l00036"></a><span class="lineno"> 36</span>&#160;<span class="comment"> * input row and repeat.</span></div><div class="line"><a name="l00037"></a><span class="lineno"> 37</span>&#160;<span class="comment"> *</span></div><div class="line"><a name="l00038"></a><span class="lineno"> 38</span>&#160;<span class="comment"> * Need to cope with the work requested in either dimension not actually</span></div><div class="line"><a name="l00039"></a><span class="lineno"> 39</span>&#160;<span class="comment"> * being a multiple of the block sizes.</span></div><div class="line"><a name="l00040"></a><span class="lineno"> 40</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00041"></a><span class="lineno"> 41</span>&#160;<span class="keyword">template</span> &lt;<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> tIntBy, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> BlockBy, <span class="keywordtype">bool</span> Transposed, <span class="keywordtype">size_t</span> TOutSize, <span class="keywordtype">size_t</span> TInSize, <span class="keywordtype">bool</span> sve&gt;</div><div class="line"><a name="l00042"></a><span class="lineno"> 42</span>&#160;<span class="keyword">struct </span>TransformImpl {</div><div class="line"><a name="l00043"></a><span class="lineno"> 43</span>&#160; <span class="keyword">template</span> &lt;<span class="keyword">typename</span> TOut, <span class="keyword">typename</span> TIn&gt;</div><div class="line"><a name="l00044"></a><span class="lineno"> 44</span>&#160; <span class="keyword">static</span> <span class="keywordtype">void</span> Transform(TOut* out, <span class="keyword">const</span> TIn* <span class="keyword">const</span> in, <span class="keyword">const</span> <span class="keywordtype">int</span> stride,</div><div class="line"><a name="l00045"></a><span class="lineno"> 45</span>&#160; <span class="keyword">const</span> <span class="keywordtype">int</span> y0, <span class="keyword">const</span> <span class="keywordtype">int</span> ymax, <span class="keyword">const</span> <span class="keywordtype">int</span> x0, <span class="keyword">const</span> <span class="keywordtype">int</span> xmax) {</div><div class="line"><a name="l00046"></a><span class="lineno"> 46</span>&#160; <span class="comment">// For SVE cases we multiply the interleave factor by the vector length.</span></div><div class="line"><a name="l00047"></a><span class="lineno"> 47</span>&#160; <span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> IntBy = tIntBy * (sve ? get_vector_length&lt;TOut&gt;() / BlockBy : 1);</div><div class="line"><a name="l00048"></a><span class="lineno"> 48</span>&#160;</div><div class="line"><a name="l00049"></a><span class="lineno"> 49</span>&#160; <span class="keyword">const</span> <span class="keywordtype">int</span> n_whole_y_blocks = (ymax - y0) / IntBy;</div><div class="line"><a name="l00050"></a><span class="lineno"> 50</span>&#160; <span class="keyword">const</span> <span class="keywordtype">int</span> y_remainders = (ymax - y0) % IntBy;</div><div class="line"><a name="l00051"></a><span class="lineno"> 51</span>&#160; <span class="keyword">const</span> <span class="keywordtype">int</span> n_y_blocks = n_whole_y_blocks + (y_remainders ? 1 : 0);</div><div class="line"><a name="l00052"></a><span class="lineno"> 52</span>&#160;</div><div class="line"><a name="l00053"></a><span class="lineno"> 53</span>&#160; <span class="keyword">const</span> <span class="keywordtype">int</span> n_whole_x_blocks = (xmax - x0) / BlockBy;</div><div class="line"><a name="l00054"></a><span class="lineno"> 54</span>&#160; <span class="keyword">const</span> <span class="keywordtype">int</span> x_remainders = (xmax - x0) % BlockBy;</div><div class="line"><a name="l00055"></a><span class="lineno"> 55</span>&#160; <span class="keyword">const</span> <span class="keywordtype">int</span> n_x_blocks = n_whole_x_blocks + (x_remainders ? 1 : 0);</div><div class="line"><a name="l00056"></a><span class="lineno"> 56</span>&#160;</div><div class="line"><a name="l00057"></a><span class="lineno"> 57</span>&#160; <span class="comment">// &quot;Y&quot; loop: advance down the rows of the source IntBy rows at a time.</span></div><div class="line"><a name="l00058"></a><span class="lineno"> 58</span>&#160; <span class="comment">// Set up fill_rows to show the number rows to copy from, and blank_rows</span></div><div class="line"><a name="l00059"></a><span class="lineno"> 59</span>&#160; <span class="comment">// for the number of blank rows to add.</span></div><div class="line"><a name="l00060"></a><span class="lineno"> 60</span>&#160; <span class="keywordflow">for</span> (<span class="keywordtype">int</span> y_block=0 ; y_block &lt; n_y_blocks; y_block++) {</div><div class="line"><a name="l00061"></a><span class="lineno"> 61</span>&#160; <span class="keywordtype">int</span> fill_rows = (y_block &lt; n_whole_y_blocks) ? IntBy : y_remainders;</div><div class="line"><a name="l00062"></a><span class="lineno"> 62</span>&#160; <span class="keywordtype">int</span> blank_rows = IntBy - fill_rows;</div><div class="line"><a name="l00063"></a><span class="lineno"> 63</span>&#160;</div><div class="line"><a name="l00064"></a><span class="lineno"> 64</span>&#160; <span class="keywordtype">int</span> y_base = y0 + (y_block * IntBy);</div><div class="line"><a name="l00065"></a><span class="lineno"> 65</span>&#160;</div><div class="line"><a name="l00066"></a><span class="lineno"> 66</span>&#160; <span class="comment">// So now advance along this block of rows, BlockBy columns at a time.</span></div><div class="line"><a name="l00067"></a><span class="lineno"> 67</span>&#160; <span class="keywordflow">for</span> (<span class="keywordtype">int</span> x_block=0 ; x_block &lt; n_x_blocks; x_block++) {</div><div class="line"><a name="l00068"></a><span class="lineno"> 68</span>&#160; <span class="keywordtype">int</span> fill_cols = (x_block &lt; n_whole_x_blocks) ? BlockBy : x_remainders;</div><div class="line"><a name="l00069"></a><span class="lineno"> 69</span>&#160; <span class="keywordtype">int</span> blank_cols = BlockBy - fill_cols;</div><div class="line"><a name="l00070"></a><span class="lineno"> 70</span>&#160;</div><div class="line"><a name="l00071"></a><span class="lineno"> 71</span>&#160; <span class="keywordtype">int</span> x_base = x0 + (x_block * BlockBy);</div><div class="line"><a name="l00072"></a><span class="lineno"> 72</span>&#160;</div><div class="line"><a name="l00073"></a><span class="lineno"> 73</span>&#160; <span class="keywordflow">for</span> (<span class="keywordtype">int</span> row = 0; row &lt; fill_rows; row++) {</div><div class="line"><a name="l00074"></a><span class="lineno"> 74</span>&#160; <span class="keywordflow">for</span> (<span class="keywordtype">int</span> col = 0; col &lt; fill_cols; col++) {</div><div class="line"><a name="l00075"></a><span class="lineno"> 75</span>&#160; <span class="comment">// In-range copy. If it&#39;s transposed, we reverse the sense of rows and columns here.</span></div><div class="line"><a name="l00076"></a><span class="lineno"> 76</span>&#160; <span class="keywordflow">if</span> (Transposed) {</div><div class="line"><a name="l00077"></a><span class="lineno"> 77</span>&#160; *out++ = static_cast&lt;TOut&gt;(in[(x_base + col) * stride + y_base + row]);</div><div class="line"><a name="l00078"></a><span class="lineno"> 78</span>&#160; } <span class="keywordflow">else</span> {</div><div class="line"><a name="l00079"></a><span class="lineno"> 79</span>&#160; *out++ = static_cast&lt;TOut&gt;(in[(y_base + row) * stride + x_base + col]);</div><div class="line"><a name="l00080"></a><span class="lineno"> 80</span>&#160; }</div><div class="line"><a name="l00081"></a><span class="lineno"> 81</span>&#160; }</div><div class="line"><a name="l00082"></a><span class="lineno"> 82</span>&#160; <span class="comment">// &quot;col&quot; tail - row is in range but column is out of range.</span></div><div class="line"><a name="l00083"></a><span class="lineno"> 83</span>&#160; <span class="keywordflow">for</span> (<span class="keywordtype">int</span> col=0; col &lt; blank_cols; col++) {</div><div class="line"><a name="l00084"></a><span class="lineno"> 84</span>&#160; *out++ = static_cast&lt;TOut&gt;(0);</div><div class="line"><a name="l00085"></a><span class="lineno"> 85</span>&#160; }</div><div class="line"><a name="l00086"></a><span class="lineno"> 86</span>&#160; }</div><div class="line"><a name="l00087"></a><span class="lineno"> 87</span>&#160; <span class="comment">// &quot;row&quot; tail - row is out of range so fill with zeros always.</span></div><div class="line"><a name="l00088"></a><span class="lineno"> 88</span>&#160; TOut zeroval = static_cast&lt;TOut&gt;(0);</div><div class="line"><a name="l00089"></a><span class="lineno"> 89</span>&#160; <span class="keywordtype">int</span> pads = blank_rows * (fill_cols + blank_cols);</div><div class="line"><a name="l00090"></a><span class="lineno"> 90</span>&#160;</div><div class="line"><a name="l00091"></a><span class="lineno"> 91</span>&#160; <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i=0; i&lt;pads; i++) {</div><div class="line"><a name="l00092"></a><span class="lineno"> 92</span>&#160; out[i] = zeroval;</div><div class="line"><a name="l00093"></a><span class="lineno"> 93</span>&#160; }</div><div class="line"><a name="l00094"></a><span class="lineno"> 94</span>&#160;</div><div class="line"><a name="l00095"></a><span class="lineno"> 95</span>&#160; out += pads;</div><div class="line"><a name="l00096"></a><span class="lineno"> 96</span>&#160; }</div><div class="line"><a name="l00097"></a><span class="lineno"> 97</span>&#160; }</div><div class="line"><a name="l00098"></a><span class="lineno"> 98</span>&#160; }</div><div class="line"><a name="l00099"></a><span class="lineno"> 99</span>&#160;</div><div class="line"><a name="l00100"></a><span class="lineno"> 100</span>&#160; <span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;</div><div class="line"><a name="l00101"></a><span class="lineno"> 101</span>&#160; <span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">void</span> Transform(T* out, <span class="keyword">const</span> T* <span class="keyword">const</span> in, <span class="keyword">const</span> <span class="keywordtype">int</span> stride,</div><div class="line"><a name="l00102"></a><span class="lineno"> 102</span>&#160; <span class="keyword">const</span> <span class="keywordtype">int</span> k0, <span class="keyword">const</span> <span class="keywordtype">int</span> kmax, <span class="keyword">const</span> <span class="keywordtype">int</span> x0, <span class="keyword">const</span> <span class="keywordtype">int</span> xmax) {</div><div class="line"><a name="l00103"></a><span class="lineno"> 103</span>&#160; Transform&lt;T, T&gt;(out, in, stride, k0, kmax, x0, xmax);</div><div class="line"><a name="l00104"></a><span class="lineno"> 104</span>&#160; }</div><div class="line"><a name="l00105"></a><span class="lineno"> 105</span>&#160;};</div><div class="line"><a name="l00106"></a><span class="lineno"> 106</span>&#160;</div><div class="line"><a name="l00107"></a><span class="lineno"> 107</span>&#160;<span class="comment">/*****************************************************************************/</span></div><div class="line"><a name="l00108"></a><span class="lineno"> 108</span>&#160;<span class="keyword">template</span> &lt;<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> IntBy, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> BlockBy, <span class="keywordtype">bool</span> Transposed, <span class="keywordtype">bool</span> sve=false, <span class="keyword">typename</span> TOut, <span class="keyword">typename</span> TIn&gt;</div><div class="line"><a name="l00109"></a><span class="lineno"> 109</span>&#160;<span class="keywordtype">void</span> Transform(</div><div class="line"><a name="l00110"></a><span class="lineno"> 110</span>&#160; TOut* out, <span class="keyword">const</span> TIn* <span class="keyword">const</span> in, <span class="keyword">const</span> <span class="keywordtype">int</span> stride,</div><div class="line"><a name="l00111"></a><span class="lineno"> 111</span>&#160; <span class="keyword">const</span> <span class="keywordtype">int</span> k0, <span class="keyword">const</span> <span class="keywordtype">int</span> kmax, <span class="keyword">const</span> <span class="keywordtype">int</span> x0, <span class="keyword">const</span> <span class="keywordtype">int</span> xmax</div><div class="line"><a name="l00112"></a><span class="lineno"> 112</span>&#160;) {</div><div class="line"><a name="l00113"></a><span class="lineno"> 113</span>&#160; <span class="comment">// Redirect to a specialised implementation predicated on argument size.</span></div><div class="line"><a name="l00114"></a><span class="lineno"> 114</span>&#160; TransformImpl&lt;IntBy, BlockBy, Transposed, <span class="keyword">sizeof</span>(TOut), <span class="keyword">sizeof</span>(TIn), sve&gt;::Transform(</div><div class="line"><a name="l00115"></a><span class="lineno"> 115</span>&#160; out, in, stride, k0, kmax, x0, xmax</div><div class="line"><a name="l00116"></a><span class="lineno"> 116</span>&#160; );</div><div class="line"><a name="l00117"></a><span class="lineno"> 117</span>&#160;}</div><div class="line"><a name="l00118"></a><span class="lineno"> 118</span>&#160;<span class="comment">/*****************************************************************************/</span></div><div class="line"><a name="l00119"></a><span class="lineno"> 119</span>&#160;</div><div class="line"><a name="l00120"></a><span class="lineno"> 120</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="transforms_2list_8hpp.xhtml">transforms/list.hpp</a>&quot;</span></div><div class="line"><a name="l00121"></a><span class="lineno"> 121</span>&#160;</div><div class="line"><a name="l00122"></a><span class="lineno"> 122</span>&#160;} <span class="comment">// namespace arm_gemm</span></div><div class="ttc" id="transforms_2list_8hpp_xhtml"><div class="ttname"><a href="transforms_2list_8hpp.xhtml">list.hpp</a></div></div>
<div class="ttc" id="namespacearm__gemm_xhtml"><div class="ttname"><a href="namespacearm__gemm.xhtml">arm_gemm</a></div><div class="ttdef"><b>Definition:</b> <a href="barrier_8hpp_source.xhtml#l00030">barrier.hpp:30</a></div></div>
<div class="ttc" id="utils_8hpp_xhtml"><div class="ttname"><a href="utils_8hpp.xhtml">utils.hpp</a></div></div>
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