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| author | johannst <johannst@users.noreply.github.com> | 2021-09-13 22:26:20 +0000 |
|---|---|---|
| committer | johannst <johannst@users.noreply.github.com> | 2021-09-13 22:26:20 +0000 |
| commit | a47dfd3d1417412f4d55ffa964d9fc98d8d53a9d (patch) | |
| tree | 417f70d1193d09d22b37ec49b905b03fc916366f /src/llvm_kaleidoscope_rs/codegen.rs.html | |
| download | llvm-kaleidoscope-rs-a47dfd3d1417412f4d55ffa964d9fc98d8d53a9d.tar.gz llvm-kaleidoscope-rs-a47dfd3d1417412f4d55ffa964d9fc98d8d53a9d.zip | |
deploy: 743f301eef632a41bd870529a9e838ce4974f9eb
Diffstat (limited to 'src/llvm_kaleidoscope_rs/codegen.rs.html')
| -rw-r--r-- | src/llvm_kaleidoscope_rs/codegen.rs.html | 275 |
1 files changed, 275 insertions, 0 deletions
diff --git a/src/llvm_kaleidoscope_rs/codegen.rs.html b/src/llvm_kaleidoscope_rs/codegen.rs.html new file mode 100644 index 0000000..bcaa770 --- /dev/null +++ b/src/llvm_kaleidoscope_rs/codegen.rs.html @@ -0,0 +1,275 @@ +<!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="rustdoc"><meta name="description" content="Source of the Rust file `src/codegen.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>codegen.rs - source</title><link rel="stylesheet" type="text/css" href="../../normalize.css"><link rel="stylesheet" type="text/css" href="../../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" type="text/css" href="../../light.css" id="themeStyle"><link rel="stylesheet" type="text/css" href="../../dark.css" disabled ><link rel="stylesheet" type="text/css" href="../../ayu.css" disabled ><script id="default-settings"></script><script 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alt="Pick another theme!"></button><div id="theme-choices" role="menu"></div></div><nav class="sub"><form class="search-form"><div class="search-container"><div><select id="crate-search"><option value="All crates">All crates</option></select><input class="search-input" name="search" disabled autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"></div><button type="button" id="help-button" title="help">?</button><a id="settings-menu" href="../../settings.html" title="settings"><img src="../../wheel.svg" width="18" height="18" alt="Change settings"></a></div></form></nav><section id="main" class="content"><div class="example-wrap"><pre class="line-numbers"><span id="1"> 1</span> +<span id="2"> 2</span> +<span id="3"> 3</span> +<span id="4"> 4</span> +<span id="5"> 5</span> +<span id="6"> 6</span> +<span id="7"> 7</span> +<span id="8"> 8</span> +<span id="9"> 9</span> +<span id="10"> 10</span> +<span id="11"> 11</span> +<span id="12"> 12</span> +<span id="13"> 13</span> +<span id="14"> 14</span> +<span id="15"> 15</span> +<span id="16"> 16</span> +<span id="17"> 17</span> +<span id="18"> 18</span> +<span id="19"> 19</span> +<span id="20"> 20</span> +<span id="21"> 21</span> +<span id="22"> 22</span> +<span id="23"> 23</span> +<span id="24"> 24</span> +<span id="25"> 25</span> +<span id="26"> 26</span> +<span id="27"> 27</span> +<span id="28"> 28</span> +<span id="29"> 29</span> +<span id="30"> 30</span> +<span id="31"> 31</span> +<span id="32"> 32</span> +<span id="33"> 33</span> +<span id="34"> 34</span> +<span id="35"> 35</span> +<span id="36"> 36</span> +<span id="37"> 37</span> +<span id="38"> 38</span> +<span id="39"> 39</span> +<span id="40"> 40</span> +<span id="41"> 41</span> +<span id="42"> 42</span> +<span id="43"> 43</span> +<span id="44"> 44</span> +<span id="45"> 45</span> +<span id="46"> 46</span> +<span id="47"> 47</span> +<span id="48"> 48</span> +<span id="49"> 49</span> +<span id="50"> 50</span> +<span id="51"> 51</span> +<span id="52"> 52</span> +<span id="53"> 53</span> +<span id="54"> 54</span> +<span id="55"> 55</span> +<span id="56"> 56</span> +<span id="57"> 57</span> +<span id="58"> 58</span> +<span id="59"> 59</span> +<span id="60"> 60</span> +<span id="61"> 61</span> +<span id="62"> 62</span> +<span id="63"> 63</span> +<span id="64"> 64</span> +<span id="65"> 65</span> +<span id="66"> 66</span> +<span id="67"> 67</span> +<span id="68"> 68</span> +<span id="69"> 69</span> +<span id="70"> 70</span> +<span id="71"> 71</span> +<span id="72"> 72</span> +<span id="73"> 73</span> +<span id="74"> 74</span> +<span id="75"> 75</span> +<span id="76"> 76</span> +<span id="77"> 77</span> +<span id="78"> 78</span> +<span id="79"> 79</span> +<span id="80"> 80</span> +<span id="81"> 81</span> +<span id="82"> 82</span> +<span id="83"> 83</span> +<span id="84"> 84</span> +<span id="85"> 85</span> +<span id="86"> 86</span> +<span id="87"> 87</span> +<span id="88"> 88</span> +<span id="89"> 89</span> +<span id="90"> 90</span> +<span id="91"> 91</span> +<span id="92"> 92</span> +<span id="93"> 93</span> +<span id="94"> 94</span> +<span id="95"> 95</span> +<span id="96"> 96</span> +<span id="97"> 97</span> +<span id="98"> 98</span> +<span id="99"> 99</span> +<span id="100">100</span> +<span id="101">101</span> +<span id="102">102</span> +<span id="103">103</span> +<span id="104">104</span> +<span id="105">105</span> +<span id="106">106</span> +<span id="107">107</span> +<span id="108">108</span> +<span id="109">109</span> +<span id="110">110</span> +<span id="111">111</span> +<span id="112">112</span> +<span id="113">113</span> +<span id="114">114</span> +<span id="115">115</span> +<span id="116">116</span> +<span id="117">117</span> +<span id="118">118</span> +<span id="119">119</span> +<span id="120">120</span> +<span id="121">121</span> +<span id="122">122</span> +<span id="123">123</span> +<span id="124">124</span> +<span id="125">125</span> +<span id="126">126</span> +<span id="127">127</span> +<span id="128">128</span> +<span id="129">129</span> +<span id="130">130</span> +<span id="131">131</span> +<span id="132">132</span> +<span id="133">133</span> +<span id="134">134</span> +<span id="135">135</span> +</pre><pre class="rust"> +<span class="kw">use</span> <span class="ident">std::collections::HashMap</span>; + +<span class="kw">use</span> <span class="kw">crate</span><span class="ident">::llvm</span>::{<span class="ident">Builder</span>, <span class="ident">FnValue</span>, <span class="ident">Module</span>, <span class="ident">Value</span>}; +<span class="kw">use</span> <span class="kw">crate</span><span class="ident">::parser</span>::{<span class="ident">ExprAST</span>, <span class="ident">FunctionAST</span>, <span class="ident">PrototypeAST</span>}; +<span class="kw">use</span> <span class="kw">crate</span><span class="ident">::Either</span>; + +<span class="kw">type</span> <span class="ident">CodegenResult</span><span class="op"><</span><span class="ident">T</span><span class="op">></span> <span class="op">=</span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">T</span>, <span class="ident">String</span><span class="op">></span>; + +<span class="doccomment">/// Code generator from kaleidoscope AST to LLVM IR.</span> +<span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">Codegen</span><span class="op"><</span><span class="lifetime">'llvm</span>, <span class="lifetime">'a</span><span class="op">></span> { + <span class="ident">module</span>: <span class="kw-2">&</span><span class="lifetime">'llvm</span> <span class="ident">Module</span>, + <span class="ident">builder</span>: <span class="kw-2">&</span><span class="lifetime">'a</span> <span class="ident">Builder</span><span class="op"><</span><span class="lifetime">'llvm</span><span class="op">></span>, +} + +<span class="kw">impl</span><span class="op"><</span><span class="lifetime">'llvm</span>, <span class="lifetime">'a</span><span class="op">></span> <span class="ident">Codegen</span><span class="op"><</span><span class="lifetime">'llvm</span>, <span class="lifetime">'a</span><span class="op">></span> { + <span class="doccomment">/// Compile either a [`PrototypeAST`] or a [`FunctionAST`] into the LLVM `module`.</span> + <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">compile</span>( + <span class="ident">module</span>: <span class="kw-2">&</span><span class="lifetime">'llvm</span> <span class="ident">Module</span>, + <span class="ident">compilee</span>: <span class="ident">Either</span><span class="op"><</span><span class="kw-2">&</span><span class="ident">PrototypeAST</span>, <span class="kw-2">&</span><span class="ident">FunctionAST</span><span class="op">></span>, + ) <span class="op">-</span><span class="op">></span> <span class="ident">CodegenResult</span><span class="op"><</span><span class="ident">FnValue</span><span class="op"><</span><span class="lifetime">'llvm</span><span class="op">></span><span class="op">></span> { + <span class="kw">let</span> <span class="ident">cg</span> <span class="op">=</span> <span class="ident">Codegen</span> { + <span class="ident">module</span>, + <span class="ident">builder</span>: <span class="kw-2">&</span><span class="ident">Builder::with_ctx</span>(<span class="ident">module</span>), + }; + <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">variables</span> <span class="op">=</span> <span class="ident">HashMap::new</span>(); + + <span class="kw">match</span> <span class="ident">compilee</span> { + <span class="ident">Either::A</span>(<span class="ident">proto</span>) <span class="op">=</span><span class="op">></span> <span class="prelude-val">Ok</span>(<span class="ident">cg</span>.<span class="ident">codegen_prototype</span>(<span class="ident">proto</span>)), + <span class="ident">Either::B</span>(<span class="ident">func</span>) <span class="op">=</span><span class="op">></span> <span class="ident">cg</span>.<span class="ident">codegen_function</span>(<span class="ident">func</span>, <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">variables</span>), + } + } + + <span class="kw">fn</span> <span class="ident">codegen_expr</span>( + <span class="kw-2">&</span><span class="self">self</span>, + <span class="ident">expr</span>: <span class="kw-2">&</span><span class="ident">ExprAST</span>, + <span class="ident">named_values</span>: <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">HashMap</span><span class="op"><</span><span class="kw-2">&</span><span class="lifetime">'llvm</span> <span class="ident">str</span>, <span class="ident">Value</span><span class="op"><</span><span class="lifetime">'llvm</span><span class="op">></span><span class="op">></span>, + ) <span class="op">-</span><span class="op">></span> <span class="ident">CodegenResult</span><span class="op"><</span><span class="ident">Value</span><span class="op"><</span><span class="lifetime">'llvm</span><span class="op">></span><span class="op">></span> { + <span class="kw">match</span> <span class="ident">expr</span> { + <span class="ident">ExprAST::Number</span>(<span class="ident">num</span>) <span class="op">=</span><span class="op">></span> <span class="prelude-val">Ok</span>(<span class="self">self</span>.<span class="ident">module</span>.<span class="ident">type_f64</span>().<span class="ident">const_f64</span>(<span class="kw-2">*</span><span class="ident">num</span>)), + <span class="ident">ExprAST::Variable</span>(<span class="ident">name</span>) <span class="op">=</span><span class="op">></span> <span class="kw">match</span> <span class="ident">named_values</span>.<span class="ident">get</span>(<span class="ident">name</span>.<span class="ident">as_str</span>()) { + <span class="prelude-val">Some</span>(<span class="ident">value</span>) <span class="op">=</span><span class="op">></span> <span class="prelude-val">Ok</span>(<span class="kw-2">*</span><span class="ident">value</span>), + <span class="prelude-val">None</span> <span class="op">=</span><span class="op">></span> <span class="prelude-val">Err</span>(<span class="string">"Unknown variable name"</span>.<span class="ident">into</span>()), + }, + <span class="ident">ExprAST::Binary</span>(<span class="ident">binop</span>, <span class="ident">lhs</span>, <span class="ident">rhs</span>) <span class="op">=</span><span class="op">></span> { + <span class="kw">let</span> <span class="ident">l</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">codegen_expr</span>(<span class="ident">lhs</span>, <span class="ident">named_values</span>)<span class="question-mark">?</span>; + <span class="kw">let</span> <span class="ident">r</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">codegen_expr</span>(<span class="ident">rhs</span>, <span class="ident">named_values</span>)<span class="question-mark">?</span>; + + <span class="kw">match</span> <span class="ident">binop</span> { + <span class="string">'+'</span> <span class="op">=</span><span class="op">></span> <span class="prelude-val">Ok</span>(<span class="self">self</span>.<span class="ident">builder</span>.<span class="ident">fadd</span>(<span class="ident">l</span>, <span class="ident">r</span>)), + <span class="string">'-'</span> <span class="op">=</span><span class="op">></span> <span class="prelude-val">Ok</span>(<span class="self">self</span>.<span class="ident">builder</span>.<span class="ident">fsub</span>(<span class="ident">l</span>, <span class="ident">r</span>)), + <span class="string">'*'</span> <span class="op">=</span><span class="op">></span> <span class="prelude-val">Ok</span>(<span class="self">self</span>.<span class="ident">builder</span>.<span class="ident">fmul</span>(<span class="ident">l</span>, <span class="ident">r</span>)), + <span class="string">'<'</span> <span class="op">=</span><span class="op">></span> { + <span class="kw">let</span> <span class="ident">res</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">builder</span>.<span class="ident">fcmpult</span>(<span class="ident">l</span>, <span class="ident">r</span>); + <span class="comment">// Turn bool into f64.</span> + <span class="prelude-val">Ok</span>(<span class="self">self</span>.<span class="ident">builder</span>.<span class="ident">uitofp</span>(<span class="ident">res</span>, <span class="self">self</span>.<span class="ident">module</span>.<span class="ident">type_f64</span>())) + } + <span class="kw">_</span> <span class="op">=</span><span class="op">></span> <span class="prelude-val">Err</span>(<span class="string">"invalid binary operator"</span>.<span class="ident">into</span>()), + } + } + <span class="ident">ExprAST::Call</span>(<span class="ident">callee</span>, <span class="ident">args</span>) <span class="op">=</span><span class="op">></span> <span class="kw">match</span> <span class="self">self</span>.<span class="ident">module</span>.<span class="ident">get_fn</span>(<span class="ident">callee</span>) { + <span class="prelude-val">Some</span>(<span class="ident">callee</span>) <span class="op">=</span><span class="op">></span> { + <span class="kw">if</span> <span class="ident">callee</span>.<span class="ident">args</span>() <span class="op">!</span><span class="op">=</span> <span class="ident">args</span>.<span class="ident">len</span>() { + <span class="kw">return</span> <span class="prelude-val">Err</span>(<span class="string">"Incorrect # arguments passed"</span>.<span class="ident">into</span>()); + } + + <span class="comment">// Generate code for function argument expressions.</span> + <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">args</span>: <span class="ident">Vec</span><span class="op"><</span><span class="ident">Value</span><span class="op"><</span><span class="lifetime">'_</span><span class="op">></span><span class="op">></span> <span class="op">=</span> <span class="ident">args</span> + .<span class="ident">iter</span>() + .<span class="ident">map</span>(<span class="op">|</span><span class="ident">arg</span><span class="op">|</span> <span class="self">self</span>.<span class="ident">codegen_expr</span>(<span class="ident">arg</span>, <span class="ident">named_values</span>)) + .<span class="ident">collect</span>::<span class="op"><</span><span class="ident">CodegenResult</span><span class="op"><</span><span class="kw">_</span><span class="op">></span><span class="op">></span>()<span class="question-mark">?</span>; + + <span class="prelude-val">Ok</span>(<span class="self">self</span>.<span class="ident">builder</span>.<span class="ident">call</span>(<span class="ident">callee</span>, <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">args</span>)) + } + <span class="prelude-val">None</span> <span class="op">=</span><span class="op">></span> <span class="prelude-val">Err</span>(<span class="string">"Unknown function referenced"</span>.<span class="ident">into</span>()), + }, + } + } + + <span class="kw">fn</span> <span class="ident">codegen_prototype</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">PrototypeAST</span>(<span class="ident">name</span>, <span class="ident">args</span>): <span class="kw-2">&</span><span class="ident">PrototypeAST</span>) <span class="op">-</span><span class="op">></span> <span class="ident">FnValue</span><span class="op"><</span><span class="lifetime">'llvm</span><span class="op">></span> { + <span class="kw">let</span> <span class="ident">type_f64</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">module</span>.<span class="ident">type_f64</span>(); + + <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">doubles</span> <span class="op">=</span> <span class="ident">Vec::new</span>(); + <span class="ident">doubles</span>.<span class="ident">resize</span>(<span class="ident">args</span>.<span class="ident">len</span>(), <span class="ident">type_f64</span>); + + <span class="comment">// Build the function type: fn(f64, f64, ..) -> f64</span> + <span class="kw">let</span> <span class="ident">ft</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">module</span>.<span class="ident">type_fn</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">doubles</span>, <span class="ident">type_f64</span>); + + <span class="comment">// Create the function declaration.</span> + <span class="kw">let</span> <span class="ident">f</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">module</span>.<span class="ident">add_fn</span>(<span class="ident">name</span>, <span class="ident">ft</span>); + + <span class="comment">// Set the names of the function arguments.</span> + <span class="kw">for</span> <span class="ident">idx</span> <span class="kw">in</span> <span class="number">0</span>..<span class="ident">f</span>.<span class="ident">args</span>() { + <span class="ident">f</span>.<span class="ident">arg</span>(<span class="ident">idx</span>).<span class="ident">set_name</span>(<span class="kw-2">&</span><span class="ident">args</span>[<span class="ident">idx</span>]); + } + + <span class="ident">f</span> + } + + <span class="kw">fn</span> <span class="ident">codegen_function</span>( + <span class="kw-2">&</span><span class="self">self</span>, + <span class="ident">FunctionAST</span>(<span class="ident">proto</span>, <span class="ident">body</span>): <span class="kw-2">&</span><span class="ident">FunctionAST</span>, + <span class="ident">named_values</span>: <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">HashMap</span><span class="op"><</span><span class="kw-2">&</span><span class="lifetime">'llvm</span> <span class="ident">str</span>, <span class="ident">Value</span><span class="op"><</span><span class="lifetime">'llvm</span><span class="op">></span><span class="op">></span>, + ) <span class="op">-</span><span class="op">></span> <span class="ident">CodegenResult</span><span class="op"><</span><span class="ident">FnValue</span><span class="op"><</span><span class="lifetime">'llvm</span><span class="op">></span><span class="op">></span> { + <span class="kw">let</span> <span class="ident">the_function</span> <span class="op">=</span> <span class="kw">match</span> <span class="self">self</span>.<span class="ident">module</span>.<span class="ident">get_fn</span>(<span class="kw-2">&</span><span class="ident">proto</span>.<span class="number">0</span>) { + <span class="prelude-val">Some</span>(<span class="ident">f</span>) <span class="op">=</span><span class="op">></span> <span class="ident">f</span>, + <span class="prelude-val">None</span> <span class="op">=</span><span class="op">></span> <span class="self">self</span>.<span class="ident">codegen_prototype</span>(<span class="ident">proto</span>), + }; + + <span class="kw">if</span> <span class="ident">the_function</span>.<span class="ident">basic_blocks</span>() <span class="op">></span> <span class="number">0</span> { + <span class="kw">return</span> <span class="prelude-val">Err</span>(<span class="string">"Function cannot be redefined."</span>.<span class="ident">into</span>()); + } + + <span class="comment">// Create entry basic block to insert code.</span> + <span class="kw">let</span> <span class="ident">bb</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">module</span>.<span class="ident">append_basic_block</span>(<span class="ident">the_function</span>); + <span class="self">self</span>.<span class="ident">builder</span>.<span class="ident">pos_at_end</span>(<span class="ident">bb</span>); + + <span class="comment">// New scope, clear the map with the function args.</span> + <span class="ident">named_values</span>.<span class="ident">clear</span>(); + + <span class="comment">// Update the map with the current functions args.</span> + <span class="kw">for</span> <span class="ident">idx</span> <span class="kw">in</span> <span class="number">0</span>..<span class="ident">the_function</span>.<span class="ident">args</span>() { + <span class="kw">let</span> <span class="ident">arg</span> <span class="op">=</span> <span class="ident">the_function</span>.<span class="ident">arg</span>(<span class="ident">idx</span>); + <span class="ident">named_values</span>.<span class="ident">insert</span>(<span class="ident">arg</span>.<span class="ident">get_name</span>(), <span class="ident">arg</span>); + } + + <span class="comment">// Codegen function body.</span> + <span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Ok</span>(<span class="ident">ret</span>) <span class="op">=</span> <span class="self">self</span>.<span class="ident">codegen_expr</span>(<span class="ident">body</span>, <span class="ident">named_values</span>) { + <span class="self">self</span>.<span class="ident">builder</span>.<span class="ident">ret</span>(<span class="ident">ret</span>); + <span class="macro">assert!</span>(<span class="ident">the_function</span>.<span class="ident">verify</span>()); + <span class="prelude-val">Ok</span>(<span class="ident">the_function</span>) + } <span class="kw">else</span> { + <span class="macro">todo!</span>(<span class="string">"Failed to codegen function body, erase from module!"</span>); + } + } +} +</pre></div> +</section><section id="search" class="content hidden"></section><div id="rustdoc-vars" data-root-path="../../" data-current-crate="llvm_kaleidoscope_rs" 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