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authorjohannst <johannst@users.noreply.github.com>2021-09-13 22:26:20 +0000
committerjohannst <johannst@users.noreply.github.com>2021-09-13 22:26:20 +0000
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+<!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/llvm.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>llvm.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 src="../../storage.js"></script><script src="../../crates.js"></script><noscript><link rel="stylesheet" href="../../noscript.css"></noscript><link rel="icon" type="image/svg+xml" href="../../favicon.svg">
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+<link rel="alternate icon" type="image/png" href="../../favicon-32x32.png"><style type="text/css">#crate-search{background-image:url("../../down-arrow.svg");}</style></head><body class="rustdoc source"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><div class="sidebar-menu" role="button">&#9776;</div><a href='../../llvm_kaleidoscope_rs/index.html'><div class='logo-container rust-logo'><img src='../../rust-logo.png' alt='logo'></div></a></nav><div class="theme-picker"><button id="theme-picker" aria-label="Pick another theme!" aria-haspopup="menu" title="themes"><img src="../../brush.svg" width="18" height="18" 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>
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+</pre><pre class="rust">
+<span class="doccomment">//! Safe wrapper around the LLVM C API.</span>
+<span class="doccomment">//!</span>
+<span class="doccomment">//! References returned from the LLVM API are tied to the `&#39;llvm` lifetime which is bound to the</span>
+<span class="doccomment">//! context where the objects are created in.</span>
+<span class="doccomment">//! We do not offer wrappers to remove or delete any objects in the context and therefore all the</span>
+<span class="doccomment">//! references will be valid for the liftime of the context.</span>
+
+<span class="kw">use</span> <span class="ident">llvm_sys::analysis</span>::{<span class="ident">LLVMVerifierFailureAction</span>, <span class="ident">LLVMVerifyFunction</span>};
+<span class="kw">use</span> <span class="ident">llvm_sys::core</span>::{
+ <span class="ident">LLVMAddFunction</span>, <span class="ident">LLVMAppendBasicBlockInContext</span>, <span class="ident">LLVMBuildFAdd</span>, <span class="ident">LLVMBuildFCmp</span>, <span class="ident">LLVMBuildFMul</span>,
+ <span class="ident">LLVMBuildFSub</span>, <span class="ident">LLVMBuildRet</span>, <span class="ident">LLVMBuildUIToFP</span>, <span class="ident">LLVMConstReal</span>, <span class="ident">LLVMContextCreate</span>,
+ <span class="ident">LLVMContextDispose</span>, <span class="ident">LLVMCountBasicBlocks</span>, <span class="ident">LLVMCountParams</span>, <span class="ident">LLVMCreateBuilderInContext</span>,
+ <span class="ident">LLVMDisposeBuilder</span>, <span class="ident">LLVMDisposeModule</span>, <span class="ident">LLVMDoubleTypeInContext</span>, <span class="ident">LLVMDumpModule</span>, <span class="ident">LLVMDumpType</span>,
+ <span class="ident">LLVMDumpValue</span>, <span class="ident">LLVMGetNamedFunction</span>, <span class="ident">LLVMGetParam</span>, <span class="ident">LLVMGetReturnType</span>, <span class="ident">LLVMGetTypeKind</span>,
+ <span class="ident">LLVMGetValueKind</span>, <span class="ident">LLVMGetValueName2</span>, <span class="ident">LLVMModuleCreateWithNameInContext</span>,
+ <span class="ident">LLVMPositionBuilderAtEnd</span>, <span class="ident">LLVMSetValueName2</span>, <span class="ident">LLVMTypeOf</span>,
+};
+<span class="kw">use</span> <span class="ident">llvm_sys::prelude</span>::{
+ <span class="ident">LLVMBasicBlockRef</span>, <span class="ident">LLVMBool</span>, <span class="ident">LLVMBuilderRef</span>, <span class="ident">LLVMContextRef</span>, <span class="ident">LLVMModuleRef</span>, <span class="ident">LLVMTypeRef</span>,
+ <span class="ident">LLVMValueRef</span>,
+};
+<span class="kw">use</span> <span class="ident">llvm_sys</span>::{<span class="ident">LLVMRealPredicate</span>, <span class="ident">LLVMTypeKind</span>, <span class="ident">LLVMValueKind</span>};
+
+<span class="kw">use</span> <span class="ident">std::convert::TryFrom</span>;
+<span class="kw">use</span> <span class="ident">std::ffi::CStr</span>;
+<span class="kw">use</span> <span class="ident">std::marker::PhantomData</span>;
+<span class="kw">use</span> <span class="ident">std::ops::Deref</span>;
+
+<span class="kw">use</span> <span class="kw">crate</span><span class="ident">::SmallCStr</span>;
+
+<span class="comment">// Definition of LLVM C API functions using our `repr(transparent)` types.</span>
+<span class="kw">extern</span> <span class="string">&quot;C&quot;</span> {
+ <span class="kw">fn</span> <span class="ident">LLVMFunctionType</span>(
+ <span class="ident">ReturnType</span>: <span class="ident">Type</span><span class="op">&lt;</span><span class="lifetime">&#39;_</span><span class="op">&gt;</span>,
+ <span class="ident">ParamTypes</span>: <span class="kw-2">*</span><span class="kw-2">mut</span> <span class="ident">Type</span><span class="op">&lt;</span><span class="lifetime">&#39;_</span><span class="op">&gt;</span>,
+ <span class="ident">ParamCount</span>: <span class="ident">::libc::c_uint</span>,
+ <span class="ident">IsVarArg</span>: <span class="ident">LLVMBool</span>,
+ ) <span class="op">-</span><span class="op">&gt;</span> <span class="ident">LLVMTypeRef</span>;
+ <span class="kw">fn</span> <span class="ident">LLVMBuildCall2</span>(
+ <span class="ident">arg1</span>: <span class="ident">LLVMBuilderRef</span>,
+ <span class="ident">arg2</span>: <span class="ident">Type</span><span class="op">&lt;</span><span class="lifetime">&#39;_</span><span class="op">&gt;</span>,
+ <span class="ident">Fn</span>: <span class="ident">FnValue</span><span class="op">&lt;</span><span class="lifetime">&#39;_</span><span class="op">&gt;</span>,
+ <span class="ident">Args</span>: <span class="kw-2">*</span><span class="kw-2">mut</span> <span class="ident">Value</span><span class="op">&lt;</span><span class="lifetime">&#39;_</span><span class="op">&gt;</span>,
+ <span class="ident">NumArgs</span>: <span class="ident">::libc::c_uint</span>,
+ <span class="ident">Name</span>: <span class="kw-2">*</span><span class="kw">const</span> <span class="ident">::libc::c_char</span>,
+ ) <span class="op">-</span><span class="op">&gt;</span> <span class="ident">LLVMValueRef</span>;
+}
+
+<span class="comment">// ====================</span>
+<span class="comment">// Module / Context</span>
+<span class="comment">// ====================</span>
+
+<span class="doccomment">/// Wrapper for a LLVM Module with its own LLVM Context.</span>
+<span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">Module</span> {
+ <span class="ident">ctx</span>: <span class="ident">LLVMContextRef</span>,
+ <span class="ident">module</span>: <span class="ident">LLVMModuleRef</span>,
+}
+
+<span class="kw">impl</span><span class="op">&lt;</span><span class="lifetime">&#39;llvm</span><span class="op">&gt;</span> <span class="ident">Module</span> {
+ <span class="doccomment">/// Create a new Module instance.</span>
+ <span class="doccomment">///</span>
+ <span class="doccomment">/// # Panics</span>
+ <span class="doccomment">///</span>
+ <span class="doccomment">/// Panics if creating the context or the module fails.</span>
+ <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">new</span>() <span class="op">-</span><span class="op">&gt;</span> <span class="self">Self</span> {
+ <span class="kw">let</span> (<span class="ident">ctx</span>, <span class="ident">module</span>) <span class="op">=</span> <span class="kw">unsafe</span> {
+ <span class="kw">let</span> <span class="ident">c</span> <span class="op">=</span> <span class="ident">LLVMContextCreate</span>();
+ <span class="kw">let</span> <span class="ident">m</span> <span class="op">=</span> <span class="ident">LLVMModuleCreateWithNameInContext</span>(<span class="string">b&quot;module\0&quot;</span>.<span class="ident">as_ptr</span>().<span class="ident">cast</span>(), <span class="ident">c</span>);
+ <span class="macro">assert!</span>(<span class="op">!</span><span class="ident">c</span>.<span class="ident">is_null</span>() <span class="op">&amp;&amp;</span> <span class="op">!</span><span class="ident">m</span>.<span class="ident">is_null</span>());
+ (<span class="ident">c</span>, <span class="ident">m</span>)
+ };
+
+ <span class="ident">Module</span> { <span class="ident">ctx</span>, <span class="ident">module</span> }
+ }
+
+ <span class="doccomment">/// Dump LLVM IR emitted into the Module to stdout.</span>
+ <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">dump</span>(<span class="kw-2">&amp;</span><span class="self">self</span>) {
+ <span class="kw">unsafe</span> { <span class="ident">LLVMDumpModule</span>(<span class="self">self</span>.<span class="ident">module</span>) };
+ }
+
+ <span class="doccomment">/// Get a type reference representing a `f64` float.</span>
+ <span class="doccomment">///</span>
+ <span class="doccomment">/// # Panics</span>
+ <span class="doccomment">///</span>
+ <span class="doccomment">/// Panics if LLVM API returns a `null` pointer.</span>
+ <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">type_f64</span>(<span class="kw-2">&amp;</span><span class="self">self</span>) <span class="op">-</span><span class="op">&gt;</span> <span class="ident">Type</span><span class="op">&lt;</span><span class="lifetime">&#39;llvm</span><span class="op">&gt;</span> {
+ <span class="kw">let</span> <span class="ident">type_ref</span> <span class="op">=</span> <span class="kw">unsafe</span> { <span class="ident">LLVMDoubleTypeInContext</span>(<span class="self">self</span>.<span class="ident">ctx</span>) };
+ <span class="ident">Type::new</span>(<span class="ident">type_ref</span>)
+ }
+
+ <span class="doccomment">/// Get a type reference representing a `fn(args) -&gt; ret` function.</span>
+ <span class="doccomment">///</span>
+ <span class="doccomment">/// # Panics</span>
+ <span class="doccomment">///</span>
+ <span class="doccomment">/// Panics if LLVM API returns a `null` pointer.</span>
+ <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">type_fn</span>(<span class="kw-2">&amp;</span><span class="lifetime">&#39;llvm</span> <span class="self">self</span>, <span class="ident">args</span>: <span class="kw-2">&amp;</span><span class="kw-2">mut</span> [<span class="ident">Type</span><span class="op">&lt;</span><span class="lifetime">&#39;llvm</span><span class="op">&gt;</span>], <span class="ident">ret</span>: <span class="ident">Type</span><span class="op">&lt;</span><span class="lifetime">&#39;llvm</span><span class="op">&gt;</span>) <span class="op">-</span><span class="op">&gt;</span> <span class="ident">Type</span><span class="op">&lt;</span><span class="lifetime">&#39;llvm</span><span class="op">&gt;</span> {
+ <span class="kw">let</span> <span class="ident">type_ref</span> <span class="op">=</span> <span class="kw">unsafe</span> {
+ <span class="ident">LLVMFunctionType</span>(
+ <span class="ident">ret</span>,
+ <span class="ident">args</span>.<span class="ident">as_mut_ptr</span>(),
+ <span class="ident">args</span>.<span class="ident">len</span>() <span class="kw">as</span> <span class="ident">libc::c_uint</span>,
+ <span class="number">0</span>, <span class="comment">/* IsVarArg */</span>
+ )
+ };
+ <span class="ident">Type::new</span>(<span class="ident">type_ref</span>)
+ }
+
+ <span class="doccomment">/// Add a function with the given `name` and `fn_type` to the module and return a value</span>
+ <span class="doccomment">/// reference representing the function.</span>
+ <span class="doccomment">///</span>
+ <span class="doccomment">/// # Panics</span>
+ <span class="doccomment">///</span>
+ <span class="doccomment">/// Panics if LLVM API returns a `null` pointer or `name` could not be converted to a</span>
+ <span class="doccomment">/// [`SmallCStr`].</span>
+ <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">add_fn</span>(<span class="kw-2">&amp;</span><span class="lifetime">&#39;llvm</span> <span class="self">self</span>, <span class="ident">name</span>: <span class="kw-2">&amp;</span><span class="ident">str</span>, <span class="ident">fn_type</span>: <span class="ident">Type</span><span class="op">&lt;</span><span class="lifetime">&#39;llvm</span><span class="op">&gt;</span>) <span class="op">-</span><span class="op">&gt;</span> <span class="ident">FnValue</span><span class="op">&lt;</span><span class="lifetime">&#39;llvm</span><span class="op">&gt;</span> {
+ <span class="macro">debug_assert_eq!</span>(
+ <span class="ident">fn_type</span>.<span class="ident">kind</span>(),
+ <span class="ident">LLVMTypeKind::LLVMFunctionTypeKind</span>,
+ <span class="string">&quot;Expected a function type when adding a function!&quot;</span>
+ );
+
+ <span class="kw">let</span> <span class="ident">name</span> <span class="op">=</span> <span class="ident">SmallCStr::try_from</span>(<span class="ident">name</span>)
+ .<span class="ident">expect</span>(<span class="string">&quot;Failed to convert &#39;name&#39; argument to small C string!&quot;</span>);
+
+ <span class="kw">let</span> <span class="ident">value_ref</span> <span class="op">=</span> <span class="kw">unsafe</span> { <span class="ident">LLVMAddFunction</span>(<span class="self">self</span>.<span class="ident">module</span>, <span class="ident">name</span>.<span class="ident">as_ptr</span>(), <span class="ident">fn_type</span>.<span class="number">0</span>) };
+ <span class="ident">FnValue::new</span>(<span class="ident">value_ref</span>)
+ }
+
+ <span class="doccomment">/// Get a function value reference to the function with the given `name` if it was previously</span>
+ <span class="doccomment">/// added to the module with [`add_fn`][Module::add_fn].</span>
+ <span class="doccomment">///</span>
+ <span class="doccomment">/// # Panics</span>
+ <span class="doccomment">///</span>
+ <span class="doccomment">/// Panics if `name` could not be converted to a [`SmallCStr`].</span>
+ <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">get_fn</span>(<span class="kw-2">&amp;</span><span class="lifetime">&#39;llvm</span> <span class="self">self</span>, <span class="ident">name</span>: <span class="kw-2">&amp;</span><span class="ident">str</span>) <span class="op">-</span><span class="op">&gt;</span> <span class="prelude-ty">Option</span><span class="op">&lt;</span><span class="ident">FnValue</span><span class="op">&lt;</span><span class="lifetime">&#39;llvm</span><span class="op">&gt;</span><span class="op">&gt;</span> {
+ <span class="kw">let</span> <span class="ident">name</span> <span class="op">=</span> <span class="ident">SmallCStr::try_from</span>(<span class="ident">name</span>)
+ .<span class="ident">expect</span>(<span class="string">&quot;Failed to convert &#39;name&#39; argument to small C string!&quot;</span>);
+
+ <span class="kw">let</span> <span class="ident">value_ref</span> <span class="op">=</span> <span class="kw">unsafe</span> { <span class="ident">LLVMGetNamedFunction</span>(<span class="self">self</span>.<span class="ident">module</span>, <span class="ident">name</span>.<span class="ident">as_ptr</span>()) };
+
+ (<span class="op">!</span><span class="ident">value_ref</span>.<span class="ident">is_null</span>()).<span class="ident">then</span>(<span class="op">|</span><span class="op">|</span> <span class="ident">FnValue::new</span>(<span class="ident">value_ref</span>))
+ }
+
+ <span class="doccomment">/// Append a Basic Block to the end of the function referenced by the value reference</span>
+ <span class="doccomment">/// `fn_value`.</span>
+ <span class="doccomment">///</span>
+ <span class="doccomment">/// # Panics</span>
+ <span class="doccomment">///</span>
+ <span class="doccomment">/// Panics if LLVM API returns a `null` pointer.</span>
+ <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">append_basic_block</span>(<span class="kw-2">&amp;</span><span class="lifetime">&#39;llvm</span> <span class="self">self</span>, <span class="ident">fn_value</span>: <span class="ident">FnValue</span><span class="op">&lt;</span><span class="lifetime">&#39;llvm</span><span class="op">&gt;</span>) <span class="op">-</span><span class="op">&gt;</span> <span class="ident">BasicBlock</span><span class="op">&lt;</span><span class="lifetime">&#39;llvm</span><span class="op">&gt;</span> {
+ <span class="kw">let</span> <span class="ident">block</span> <span class="op">=</span> <span class="kw">unsafe</span> {
+ <span class="ident">LLVMAppendBasicBlockInContext</span>(
+ <span class="self">self</span>.<span class="ident">ctx</span>,
+ <span class="ident">fn_value</span>.<span class="ident">value_ref</span>(),
+ <span class="string">b&quot;block\0&quot;</span>.<span class="ident">as_ptr</span>().<span class="ident">cast</span>(),
+ )
+ };
+ <span class="macro">assert!</span>(<span class="op">!</span><span class="ident">block</span>.<span class="ident">is_null</span>());
+
+ <span class="ident">BasicBlock</span>(<span class="ident">block</span>, <span class="ident">PhantomData</span>)
+ }
+}
+
+<span class="kw">impl</span> <span class="ident">Drop</span> <span class="kw">for</span> <span class="ident">Module</span> {
+ <span class="kw">fn</span> <span class="ident">drop</span>(<span class="kw-2">&amp;</span><span class="kw-2">mut</span> <span class="self">self</span>) {
+ <span class="kw">unsafe</span> {
+ <span class="ident">LLVMDisposeModule</span>(<span class="self">self</span>.<span class="ident">module</span>);
+ <span class="ident">LLVMContextDispose</span>(<span class="self">self</span>.<span class="ident">ctx</span>);
+ }
+ }
+}
+
+<span class="comment">// ===========</span>
+<span class="comment">// Builder</span>
+<span class="comment">// ===========</span>
+
+<span class="doccomment">/// Wrapper for a LLVM IR Builder.</span>
+<span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">Builder</span><span class="op">&lt;</span><span class="lifetime">&#39;llvm</span><span class="op">&gt;</span> {
+ <span class="ident">builder</span>: <span class="ident">LLVMBuilderRef</span>,
+ <span class="ident">_ctx</span>: <span class="ident">PhantomData</span><span class="op">&lt;</span><span class="kw-2">&amp;</span><span class="lifetime">&#39;llvm</span> ()<span class="op">&gt;</span>,
+}
+
+<span class="kw">impl</span><span class="op">&lt;</span><span class="lifetime">&#39;llvm</span><span class="op">&gt;</span> <span class="ident">Builder</span><span class="op">&lt;</span><span class="lifetime">&#39;llvm</span><span class="op">&gt;</span> {
+ <span class="doccomment">/// Create a new LLVM IR Builder with the `module`s context.</span>
+ <span class="doccomment">///</span>
+ <span class="doccomment">/// # Panics</span>
+ <span class="doccomment">///</span>
+ <span class="doccomment">/// Panics if creating the IR Builder fails.</span>
+ <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">with_ctx</span>(<span class="ident">module</span>: <span class="kw-2">&amp;</span><span class="lifetime">&#39;llvm</span> <span class="ident">Module</span>) <span class="op">-</span><span class="op">&gt;</span> <span class="ident">Builder</span><span class="op">&lt;</span><span class="lifetime">&#39;llvm</span><span class="op">&gt;</span> {
+ <span class="kw">let</span> <span class="ident">builder</span> <span class="op">=</span> <span class="kw">unsafe</span> { <span class="ident">LLVMCreateBuilderInContext</span>(<span class="ident">module</span>.<span class="ident">ctx</span>) };
+ <span class="macro">assert!</span>(<span class="op">!</span><span class="ident">builder</span>.<span class="ident">is_null</span>());
+
+ <span class="ident">Builder</span> {
+ <span class="ident">builder</span>,
+ <span class="ident">_ctx</span>: <span class="ident">PhantomData</span>,
+ }
+ }
+
+ <span class="doccomment">/// Position the IR Builder at the end of the given Basic Block.</span>
+ <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">pos_at_end</span>(<span class="kw-2">&amp;</span><span class="self">self</span>, <span class="ident">bb</span>: <span class="ident">BasicBlock</span><span class="op">&lt;</span><span class="lifetime">&#39;llvm</span><span class="op">&gt;</span>) {
+ <span class="kw">unsafe</span> {
+ <span class="ident">LLVMPositionBuilderAtEnd</span>(<span class="self">self</span>.<span class="ident">builder</span>, <span class="ident">bb</span>.<span class="number">0</span>);
+ }
+ }
+
+ <span class="doccomment">/// Emit a [fadd](https://llvm.org/docs/LangRef.html#fadd-instruction) instruction.</span>
+ <span class="doccomment">///</span>
+ <span class="doccomment">/// # Panics</span>
+ <span class="doccomment">///</span>
+ <span class="doccomment">/// Panics if LLVM API returns a `null` pointer.</span>
+ <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">fadd</span>(<span class="kw-2">&amp;</span><span class="self">self</span>, <span class="ident">lhs</span>: <span class="ident">Value</span><span class="op">&lt;</span><span class="lifetime">&#39;llvm</span><span class="op">&gt;</span>, <span class="ident">rhs</span>: <span class="ident">Value</span><span class="op">&lt;</span><span class="lifetime">&#39;llvm</span><span class="op">&gt;</span>) <span class="op">-</span><span class="op">&gt;</span> <span class="ident">Value</span><span class="op">&lt;</span><span class="lifetime">&#39;llvm</span><span class="op">&gt;</span> {
+ <span class="macro">debug_assert!</span>(<span class="ident">lhs</span>.<span class="ident">is_f64</span>(), <span class="string">&quot;fadd: Expected f64 as lhs operand!&quot;</span>);
+ <span class="macro">debug_assert!</span>(<span class="ident">rhs</span>.<span class="ident">is_f64</span>(), <span class="string">&quot;fadd: Expected f64 as rhs operand!&quot;</span>);
+
+ <span class="kw">let</span> <span class="ident">value_ref</span> <span class="op">=</span> <span class="kw">unsafe</span> {
+ <span class="ident">LLVMBuildFAdd</span>(
+ <span class="self">self</span>.<span class="ident">builder</span>,
+ <span class="ident">lhs</span>.<span class="ident">value_ref</span>(),
+ <span class="ident">rhs</span>.<span class="ident">value_ref</span>(),
+ <span class="string">b&quot;fadd\0&quot;</span>.<span class="ident">as_ptr</span>().<span class="ident">cast</span>(),
+ )
+ };
+ <span class="ident">Value::new</span>(<span class="ident">value_ref</span>)
+ }
+
+ <span class="doccomment">/// Emit a [fsub](https://llvm.org/docs/LangRef.html#fsub-instruction) instruction.</span>
+ <span class="doccomment">///</span>
+ <span class="doccomment">/// # Panics</span>
+ <span class="doccomment">///</span>
+ <span class="doccomment">/// Panics if LLVM API returns a `null` pointer.</span>
+ <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">fsub</span>(<span class="kw-2">&amp;</span><span class="self">self</span>, <span class="ident">lhs</span>: <span class="ident">Value</span><span class="op">&lt;</span><span class="lifetime">&#39;llvm</span><span class="op">&gt;</span>, <span class="ident">rhs</span>: <span class="ident">Value</span><span class="op">&lt;</span><span class="lifetime">&#39;llvm</span><span class="op">&gt;</span>) <span class="op">-</span><span class="op">&gt;</span> <span class="ident">Value</span><span class="op">&lt;</span><span class="lifetime">&#39;llvm</span><span class="op">&gt;</span> {
+ <span class="macro">debug_assert!</span>(<span class="ident">lhs</span>.<span class="ident">is_f64</span>(), <span class="string">&quot;fsub: Expected f64 as lhs operand!&quot;</span>);
+ <span class="macro">debug_assert!</span>(<span class="ident">rhs</span>.<span class="ident">is_f64</span>(), <span class="string">&quot;fsub: Expected f64 as rhs operand!&quot;</span>);
+
+ <span class="kw">let</span> <span class="ident">value_ref</span> <span class="op">=</span> <span class="kw">unsafe</span> {
+ <span class="ident">LLVMBuildFSub</span>(
+ <span class="self">self</span>.<span class="ident">builder</span>,
+ <span class="ident">lhs</span>.<span class="ident">value_ref</span>(),
+ <span class="ident">rhs</span>.<span class="ident">value_ref</span>(),
+ <span class="string">b&quot;fsub\0&quot;</span>.<span class="ident">as_ptr</span>().<span class="ident">cast</span>(),
+ )
+ };
+ <span class="ident">Value::new</span>(<span class="ident">value_ref</span>)
+ }
+
+ <span class="doccomment">/// Emit a [fmul](https://llvm.org/docs/LangRef.html#fmul-instruction) instruction.</span>
+ <span class="doccomment">///</span>
+ <span class="doccomment">/// # Panics</span>
+ <span class="doccomment">///</span>
+ <span class="doccomment">/// Panics if LLVM API returns a `null` pointer.</span>
+ <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">fmul</span>(<span class="kw-2">&amp;</span><span class="self">self</span>, <span class="ident">lhs</span>: <span class="ident">Value</span><span class="op">&lt;</span><span class="lifetime">&#39;llvm</span><span class="op">&gt;</span>, <span class="ident">rhs</span>: <span class="ident">Value</span><span class="op">&lt;</span><span class="lifetime">&#39;llvm</span><span class="op">&gt;</span>) <span class="op">-</span><span class="op">&gt;</span> <span class="ident">Value</span><span class="op">&lt;</span><span class="lifetime">&#39;llvm</span><span class="op">&gt;</span> {
+ <span class="macro">debug_assert!</span>(<span class="ident">lhs</span>.<span class="ident">is_f64</span>(), <span class="string">&quot;fmul: Expected f64 as lhs operand!&quot;</span>);
+ <span class="macro">debug_assert!</span>(<span class="ident">rhs</span>.<span class="ident">is_f64</span>(), <span class="string">&quot;fmul: Expected f64 as rhs operand!&quot;</span>);
+
+ <span class="kw">let</span> <span class="ident">value_ref</span> <span class="op">=</span> <span class="kw">unsafe</span> {
+ <span class="ident">LLVMBuildFMul</span>(
+ <span class="self">self</span>.<span class="ident">builder</span>,
+ <span class="ident">lhs</span>.<span class="ident">value_ref</span>(),
+ <span class="ident">rhs</span>.<span class="ident">value_ref</span>(),
+ <span class="string">b&quot;fmul\0&quot;</span>.<span class="ident">as_ptr</span>().<span class="ident">cast</span>(),
+ )
+ };
+ <span class="ident">Value::new</span>(<span class="ident">value_ref</span>)
+ }
+
+ <span class="doccomment">/// Emit a [fcmult](https://llvm.org/docs/LangRef.html#fcmp-instruction) instruction.</span>
+ <span class="doccomment">///</span>
+ <span class="doccomment">/// # Panics</span>
+ <span class="doccomment">///</span>
+ <span class="doccomment">/// Panics if LLVM API returns a `null` pointer.</span>
+ <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">fcmpult</span>(<span class="kw-2">&amp;</span><span class="self">self</span>, <span class="ident">lhs</span>: <span class="ident">Value</span><span class="op">&lt;</span><span class="lifetime">&#39;llvm</span><span class="op">&gt;</span>, <span class="ident">rhs</span>: <span class="ident">Value</span><span class="op">&lt;</span><span class="lifetime">&#39;llvm</span><span class="op">&gt;</span>) <span class="op">-</span><span class="op">&gt;</span> <span class="ident">Value</span><span class="op">&lt;</span><span class="lifetime">&#39;llvm</span><span class="op">&gt;</span> {
+ <span class="macro">debug_assert!</span>(<span class="ident">lhs</span>.<span class="ident">is_f64</span>(), <span class="string">&quot;fcmplt: Expected f64 as lhs operand!&quot;</span>);
+ <span class="macro">debug_assert!</span>(<span class="ident">rhs</span>.<span class="ident">is_f64</span>(), <span class="string">&quot;fcmplt: Expected f64 as rhs operand!&quot;</span>);
+
+ <span class="kw">let</span> <span class="ident">value_ref</span> <span class="op">=</span> <span class="kw">unsafe</span> {
+ <span class="ident">LLVMBuildFCmp</span>(
+ <span class="self">self</span>.<span class="ident">builder</span>,
+ <span class="ident">LLVMRealPredicate::LLVMRealULT</span>,
+ <span class="ident">lhs</span>.<span class="ident">value_ref</span>(),
+ <span class="ident">rhs</span>.<span class="ident">value_ref</span>(),
+ <span class="string">b&quot;fcmplt\0&quot;</span>.<span class="ident">as_ptr</span>().<span class="ident">cast</span>(),
+ )
+ };
+ <span class="ident">Value::new</span>(<span class="ident">value_ref</span>)
+ }
+
+ <span class="doccomment">/// Emit a [uitofp](https://llvm.org/docs/LangRef.html#uitofp-to-instruction) instruction.</span>
+ <span class="doccomment">///</span>
+ <span class="doccomment">/// # Panics</span>
+ <span class="doccomment">///</span>
+ <span class="doccomment">/// Panics if LLVM API returns a `null` pointer.</span>
+ <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">uitofp</span>(<span class="kw-2">&amp;</span><span class="self">self</span>, <span class="ident">val</span>: <span class="ident">Value</span><span class="op">&lt;</span><span class="lifetime">&#39;llvm</span><span class="op">&gt;</span>, <span class="ident">dest_type</span>: <span class="ident">Type</span><span class="op">&lt;</span><span class="lifetime">&#39;llvm</span><span class="op">&gt;</span>) <span class="op">-</span><span class="op">&gt;</span> <span class="ident">Value</span><span class="op">&lt;</span><span class="lifetime">&#39;llvm</span><span class="op">&gt;</span> {
+ <span class="macro">debug_assert!</span>(<span class="ident">val</span>.<span class="ident">is_int</span>(), <span class="string">&quot;uitofp: Expected integer operand!&quot;</span>);
+
+ <span class="kw">let</span> <span class="ident">value_ref</span> <span class="op">=</span> <span class="kw">unsafe</span> {
+ <span class="ident">LLVMBuildUIToFP</span>(
+ <span class="self">self</span>.<span class="ident">builder</span>,
+ <span class="ident">val</span>.<span class="ident">value_ref</span>(),
+ <span class="ident">dest_type</span>.<span class="number">0</span>,
+ <span class="string">b&quot;uitofp\0&quot;</span>.<span class="ident">as_ptr</span>().<span class="ident">cast</span>(),
+ )
+ };
+ <span class="ident">Value::new</span>(<span class="ident">value_ref</span>)
+ }
+
+ <span class="doccomment">/// Emit a [call](https://llvm.org/docs/LangRef.html#call-instruction) instruction.</span>
+ <span class="doccomment">///</span>
+ <span class="doccomment">/// # Panics</span>
+ <span class="doccomment">///</span>
+ <span class="doccomment">/// Panics if LLVM API returns a `null` pointer.</span>
+ <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">call</span>(<span class="kw-2">&amp;</span><span class="self">self</span>, <span class="ident">fn_value</span>: <span class="ident">FnValue</span><span class="op">&lt;</span><span class="lifetime">&#39;llvm</span><span class="op">&gt;</span>, <span class="ident">args</span>: <span class="kw-2">&amp;</span><span class="kw-2">mut</span> [<span class="ident">Value</span><span class="op">&lt;</span><span class="lifetime">&#39;llvm</span><span class="op">&gt;</span>]) <span class="op">-</span><span class="op">&gt;</span> <span class="ident">Value</span><span class="op">&lt;</span><span class="lifetime">&#39;llvm</span><span class="op">&gt;</span> {
+ <span class="kw">let</span> <span class="ident">value_ref</span> <span class="op">=</span> <span class="kw">unsafe</span> {
+ <span class="ident">LLVMBuildCall2</span>(
+ <span class="self">self</span>.<span class="ident">builder</span>,
+ <span class="ident">fn_value</span>.<span class="ident">ret_type</span>(),
+ <span class="ident">fn_value</span>,
+ <span class="ident">args</span>.<span class="ident">as_mut_ptr</span>(),
+ <span class="ident">args</span>.<span class="ident">len</span>() <span class="kw">as</span> <span class="ident">libc::c_uint</span>,
+ <span class="string">b&quot;call\0&quot;</span>.<span class="ident">as_ptr</span>().<span class="ident">cast</span>(),
+ )
+ };
+ <span class="ident">Value::new</span>(<span class="ident">value_ref</span>)
+ }
+
+ <span class="doccomment">/// Emit a [ret](https://llvm.org/docs/LangRef.html#ret-instruction) instruction.</span>
+ <span class="doccomment">///</span>
+ <span class="doccomment">/// # Panics</span>
+ <span class="doccomment">///</span>
+ <span class="doccomment">/// Panics if LLVM API returns a `null` pointer.</span>
+ <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">ret</span>(<span class="kw-2">&amp;</span><span class="self">self</span>, <span class="ident">ret</span>: <span class="ident">Value</span><span class="op">&lt;</span><span class="lifetime">&#39;llvm</span><span class="op">&gt;</span>) {
+ <span class="kw">let</span> <span class="ident">ret</span> <span class="op">=</span> <span class="kw">unsafe</span> { <span class="ident">LLVMBuildRet</span>(<span class="self">self</span>.<span class="ident">builder</span>, <span class="ident">ret</span>.<span class="ident">value_ref</span>()) };
+ <span class="macro">assert!</span>(<span class="op">!</span><span class="ident">ret</span>.<span class="ident">is_null</span>());
+ }
+}
+
+<span class="kw">impl</span> <span class="ident">Drop</span> <span class="kw">for</span> <span class="ident">Builder</span><span class="op">&lt;</span><span class="lifetime">&#39;_</span><span class="op">&gt;</span> {
+ <span class="kw">fn</span> <span class="ident">drop</span>(<span class="kw-2">&amp;</span><span class="kw-2">mut</span> <span class="self">self</span>) {
+ <span class="kw">unsafe</span> { <span class="ident">LLVMDisposeBuilder</span>(<span class="self">self</span>.<span class="ident">builder</span>) }
+ }
+}
+
+<span class="comment">// ==============</span>
+<span class="comment">// BasicBlock</span>
+<span class="comment">// ==============</span>
+
+<span class="doccomment">/// Wrapper for a LLVM Basic Block.</span>
+<span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Copy</span>, <span class="ident">Clone</span>)]</span>
+<span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">BasicBlock</span><span class="op">&lt;</span><span class="lifetime">&#39;llvm</span><span class="op">&gt;</span>(<span class="ident">LLVMBasicBlockRef</span>, <span class="ident">PhantomData</span><span class="op">&lt;</span><span class="kw-2">&amp;</span><span class="lifetime">&#39;llvm</span> ()<span class="op">&gt;</span>);
+
+<span class="comment">// ========</span>
+<span class="comment">// Type</span>
+<span class="comment">// ========</span>
+
+<span class="doccomment">/// Wrapper for a LLVM Type Reference.</span>
+<span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Copy</span>, <span class="ident">Clone</span>)]</span>
+<span class="attribute">#[<span class="ident">repr</span>(<span class="ident">transparent</span>)]</span>
+<span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">Type</span><span class="op">&lt;</span><span class="lifetime">&#39;llvm</span><span class="op">&gt;</span>(<span class="ident">LLVMTypeRef</span>, <span class="ident">PhantomData</span><span class="op">&lt;</span><span class="kw-2">&amp;</span><span class="lifetime">&#39;llvm</span> ()<span class="op">&gt;</span>);
+
+<span class="kw">impl</span><span class="op">&lt;</span><span class="lifetime">&#39;llvm</span><span class="op">&gt;</span> <span class="ident">Type</span><span class="op">&lt;</span><span class="lifetime">&#39;llvm</span><span class="op">&gt;</span> {
+ <span class="kw">fn</span> <span class="ident">new</span>(<span class="ident">type_ref</span>: <span class="ident">LLVMTypeRef</span>) <span class="op">-</span><span class="op">&gt;</span> <span class="self">Self</span> {
+ <span class="macro">assert!</span>(<span class="op">!</span><span class="ident">type_ref</span>.<span class="ident">is_null</span>());
+ <span class="ident">Type</span>(<span class="ident">type_ref</span>, <span class="ident">PhantomData</span>)
+ }
+
+ <span class="kw">fn</span> <span class="ident">kind</span>(<span class="kw-2">&amp;</span><span class="self">self</span>) <span class="op">-</span><span class="op">&gt;</span> <span class="ident">LLVMTypeKind</span> {
+ <span class="kw">unsafe</span> { <span class="ident">LLVMGetTypeKind</span>(<span class="self">self</span>.<span class="number">0</span>) }
+ }
+
+ <span class="doccomment">/// Dump the LLVM Type to stdout.</span>
+ <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">dump</span>(<span class="kw-2">&amp;</span><span class="self">self</span>) {
+ <span class="kw">unsafe</span> { <span class="ident">LLVMDumpType</span>(<span class="self">self</span>.<span class="number">0</span>) };
+ }
+
+ <span class="doccomment">/// Get a value reference representing the const `f64` value.</span>
+ <span class="doccomment">///</span>
+ <span class="doccomment">/// # Panics</span>
+ <span class="doccomment">///</span>
+ <span class="doccomment">/// Panics if LLVM API returns a `null` pointer.</span>
+ <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">const_f64</span>(<span class="self">self</span>, <span class="ident">n</span>: <span class="ident">f64</span>) <span class="op">-</span><span class="op">&gt;</span> <span class="ident">Value</span><span class="op">&lt;</span><span class="lifetime">&#39;llvm</span><span class="op">&gt;</span> {
+ <span class="macro">debug_assert_eq!</span>(
+ <span class="self">self</span>.<span class="ident">kind</span>(),
+ <span class="ident">LLVMTypeKind::LLVMDoubleTypeKind</span>,
+ <span class="string">&quot;Expected a double type when creating const f64 value!&quot;</span>
+ );
+
+ <span class="kw">let</span> <span class="ident">value_ref</span> <span class="op">=</span> <span class="kw">unsafe</span> { <span class="ident">LLVMConstReal</span>(<span class="self">self</span>.<span class="number">0</span>, <span class="ident">n</span>) };
+ <span class="ident">Value::new</span>(<span class="ident">value_ref</span>)
+ }
+}
+
+<span class="comment">// =========</span>
+<span class="comment">// Value</span>
+<span class="comment">// =========</span>
+
+<span class="doccomment">/// Wrapper for a LLVM Value Reference.</span>
+<span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Copy</span>, <span class="ident">Clone</span>)]</span>
+<span class="attribute">#[<span class="ident">repr</span>(<span class="ident">transparent</span>)]</span>
+<span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">Value</span><span class="op">&lt;</span><span class="lifetime">&#39;llvm</span><span class="op">&gt;</span>(<span class="ident">LLVMValueRef</span>, <span class="ident">PhantomData</span><span class="op">&lt;</span><span class="kw-2">&amp;</span><span class="lifetime">&#39;llvm</span> ()<span class="op">&gt;</span>);
+
+<span class="kw">impl</span><span class="op">&lt;</span><span class="lifetime">&#39;llvm</span><span class="op">&gt;</span> <span class="ident">Value</span><span class="op">&lt;</span><span class="lifetime">&#39;llvm</span><span class="op">&gt;</span> {
+ <span class="kw">fn</span> <span class="ident">new</span>(<span class="ident">value_ref</span>: <span class="ident">LLVMValueRef</span>) <span class="op">-</span><span class="op">&gt;</span> <span class="self">Self</span> {
+ <span class="macro">assert!</span>(<span class="op">!</span><span class="ident">value_ref</span>.<span class="ident">is_null</span>());
+ <span class="ident">Value</span>(<span class="ident">value_ref</span>, <span class="ident">PhantomData</span>)
+ }
+
+ <span class="attribute">#[<span class="ident">inline</span>]</span>
+ <span class="kw">fn</span> <span class="ident">value_ref</span>(<span class="kw-2">&amp;</span><span class="self">self</span>) <span class="op">-</span><span class="op">&gt;</span> <span class="ident">LLVMValueRef</span> {
+ <span class="self">self</span>.<span class="number">0</span>
+ }
+
+ <span class="kw">fn</span> <span class="ident">kind</span>(<span class="kw-2">&amp;</span><span class="self">self</span>) <span class="op">-</span><span class="op">&gt;</span> <span class="ident">LLVMValueKind</span> {
+ <span class="kw">unsafe</span> { <span class="ident">LLVMGetValueKind</span>(<span class="self">self</span>.<span class="ident">value_ref</span>()) }
+ }
+
+ <span class="doccomment">/// Dump the LLVM Value to stdout.</span>
+ <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">dump</span>(<span class="kw-2">&amp;</span><span class="self">self</span>) {
+ <span class="kw">unsafe</span> { <span class="ident">LLVMDumpValue</span>(<span class="self">self</span>.<span class="ident">value_ref</span>()) };
+ }
+
+ <span class="doccomment">/// Get a type reference representing for the given value reference.</span>
+ <span class="doccomment">///</span>
+ <span class="doccomment">/// # Panics</span>
+ <span class="doccomment">///</span>
+ <span class="doccomment">/// Panics if LLVM API returns a `null` pointer.</span>
+ <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">type_of</span>(<span class="kw-2">&amp;</span><span class="self">self</span>) <span class="op">-</span><span class="op">&gt;</span> <span class="ident">Type</span><span class="op">&lt;</span><span class="lifetime">&#39;llvm</span><span class="op">&gt;</span> {
+ <span class="kw">let</span> <span class="ident">type_ref</span> <span class="op">=</span> <span class="kw">unsafe</span> { <span class="ident">LLVMTypeOf</span>(<span class="self">self</span>.<span class="ident">value_ref</span>()) };
+ <span class="ident">Type::new</span>(<span class="ident">type_ref</span>)
+ }
+
+ <span class="doccomment">/// Set the name for the given value reference.</span>
+ <span class="doccomment">///</span>
+ <span class="doccomment">/// # Panics</span>
+ <span class="doccomment">///</span>
+ <span class="doccomment">/// Panics if LLVM API returns a `null` pointer.</span>
+ <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">set_name</span>(<span class="kw-2">&amp;</span><span class="self">self</span>, <span class="ident">name</span>: <span class="kw-2">&amp;</span><span class="ident">str</span>) {
+ <span class="kw">unsafe</span> { <span class="ident">LLVMSetValueName2</span>(<span class="self">self</span>.<span class="ident">value_ref</span>(), <span class="ident">name</span>.<span class="ident">as_ptr</span>().<span class="ident">cast</span>(), <span class="ident">name</span>.<span class="ident">len</span>()) };
+ }
+
+ <span class="doccomment">/// Get the name for the given value reference.</span>
+ <span class="doccomment">///</span>
+ <span class="doccomment">/// # Panics</span>
+ <span class="doccomment">///</span>
+ <span class="doccomment">/// Panics if LLVM API returns a `null` pointer.</span>
+ <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">get_name</span>(<span class="kw-2">&amp;</span><span class="self">self</span>) <span class="op">-</span><span class="op">&gt;</span> <span class="kw-2">&amp;</span><span class="lifetime">&#39;llvm</span> <span class="ident">str</span> {
+ <span class="kw">let</span> <span class="ident">name</span> <span class="op">=</span> <span class="kw">unsafe</span> {
+ <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">len</span>: <span class="ident">libc::size_t</span> <span class="op">=</span> <span class="number">0</span>;
+ <span class="kw">let</span> <span class="ident">name</span> <span class="op">=</span> <span class="ident">LLVMGetValueName2</span>(<span class="self">self</span>.<span class="number">0</span>, <span class="kw-2">&amp;</span><span class="kw-2">mut</span> <span class="ident">len</span> <span class="kw">as</span> <span class="kw">_</span>);
+ <span class="macro">assert!</span>(<span class="op">!</span><span class="ident">name</span>.<span class="ident">is_null</span>());
+
+ <span class="ident">CStr::from_ptr</span>(<span class="ident">name</span>)
+ };
+
+ <span class="comment">// TODO: Does this string live for the time of the LLVM context?!</span>
+ <span class="ident">name</span>.<span class="ident">to_str</span>()
+ .<span class="ident">expect</span>(<span class="string">&quot;Expected valid UTF8 string from LLVM API&quot;</span>)
+ }
+
+ <span class="doccomment">/// Check if value is of `f64` type.</span>
+ <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">is_f64</span>(<span class="kw-2">&amp;</span><span class="self">self</span>) <span class="op">-</span><span class="op">&gt;</span> <span class="ident">bool</span> {
+ <span class="self">self</span>.<span class="ident">type_of</span>().<span class="ident">kind</span>() <span class="op">=</span><span class="op">=</span> <span class="ident">LLVMTypeKind::LLVMDoubleTypeKind</span>
+ }
+
+ <span class="doccomment">/// Check if value is of integer type.</span>
+ <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">is_int</span>(<span class="kw-2">&amp;</span><span class="self">self</span>) <span class="op">-</span><span class="op">&gt;</span> <span class="ident">bool</span> {
+ <span class="self">self</span>.<span class="ident">type_of</span>().<span class="ident">kind</span>() <span class="op">=</span><span class="op">=</span> <span class="ident">LLVMTypeKind::LLVMIntegerTypeKind</span>
+ }
+}
+
+<span class="doccomment">/// Wrapper for a LLVM Value Reference specialized for contexts where function values are needed.</span>
+<span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Copy</span>, <span class="ident">Clone</span>)]</span>
+<span class="attribute">#[<span class="ident">repr</span>(<span class="ident">transparent</span>)]</span>
+<span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">FnValue</span><span class="op">&lt;</span><span class="lifetime">&#39;llvm</span><span class="op">&gt;</span>(<span class="ident">Value</span><span class="op">&lt;</span><span class="lifetime">&#39;llvm</span><span class="op">&gt;</span>);
+
+<span class="kw">impl</span><span class="op">&lt;</span><span class="lifetime">&#39;llvm</span><span class="op">&gt;</span> <span class="ident">Deref</span> <span class="kw">for</span> <span class="ident">FnValue</span><span class="op">&lt;</span><span class="lifetime">&#39;llvm</span><span class="op">&gt;</span> {
+ <span class="kw">type</span> <span class="ident">Target</span> <span class="op">=</span> <span class="ident">Value</span><span class="op">&lt;</span><span class="lifetime">&#39;llvm</span><span class="op">&gt;</span>;
+ <span class="kw">fn</span> <span class="ident">deref</span>(<span class="kw-2">&amp;</span><span class="self">self</span>) <span class="op">-</span><span class="op">&gt;</span> <span class="kw-2">&amp;</span><span class="self">Self</span><span class="ident">::Target</span> {
+ <span class="kw-2">&amp;</span><span class="self">self</span>.<span class="number">0</span>
+ }
+}
+
+<span class="kw">impl</span><span class="op">&lt;</span><span class="lifetime">&#39;llvm</span><span class="op">&gt;</span> <span class="ident">FnValue</span><span class="op">&lt;</span><span class="lifetime">&#39;llvm</span><span class="op">&gt;</span> {
+ <span class="kw">fn</span> <span class="ident">new</span>(<span class="ident">value_ref</span>: <span class="ident">LLVMValueRef</span>) <span class="op">-</span><span class="op">&gt;</span> <span class="self">Self</span> {
+ <span class="kw">let</span> <span class="ident">value</span> <span class="op">=</span> <span class="ident">Value::new</span>(<span class="ident">value_ref</span>);
+ <span class="macro">debug_assert_eq!</span>(
+ <span class="ident">value</span>.<span class="ident">kind</span>(),
+ <span class="ident">LLVMValueKind::LLVMFunctionValueKind</span>,
+ <span class="string">&quot;Expected a fn value when constructing FnValue!&quot;</span>
+ );
+
+ <span class="ident">FnValue</span>(<span class="ident">value</span>)
+ }
+
+ <span class="doccomment">/// Get a type reference representing the return value of the given function value.</span>
+ <span class="doccomment">///</span>
+ <span class="doccomment">/// # Panics</span>
+ <span class="doccomment">///</span>
+ <span class="doccomment">/// Panics if LLVM API returns a `null` pointer.</span>
+ <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">ret_type</span>(<span class="kw-2">&amp;</span><span class="self">self</span>) <span class="op">-</span><span class="op">&gt;</span> <span class="ident">Type</span><span class="op">&lt;</span><span class="lifetime">&#39;llvm</span><span class="op">&gt;</span> {
+ <span class="kw">let</span> <span class="ident">type_ref</span> <span class="op">=</span> <span class="kw">unsafe</span> { <span class="ident">LLVMGetReturnType</span>(<span class="ident">LLVMTypeOf</span>(<span class="self">self</span>.<span class="ident">value_ref</span>())) };
+ <span class="ident">Type::new</span>(<span class="ident">type_ref</span>)
+ }
+
+ <span class="doccomment">/// Get the number of function arguments for the given function value.</span>
+ <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">args</span>(<span class="kw-2">&amp;</span><span class="self">self</span>) <span class="op">-</span><span class="op">&gt;</span> <span class="ident">usize</span> {
+ <span class="kw">unsafe</span> { <span class="ident">LLVMCountParams</span>(<span class="self">self</span>.<span class="ident">value_ref</span>()) <span class="kw">as</span> <span class="ident">usize</span> }
+ }
+
+ <span class="doccomment">/// Get a value reference for the function argument at index `idx`.</span>
+ <span class="doccomment">///</span>
+ <span class="doccomment">/// # Panics</span>
+ <span class="doccomment">///</span>
+ <span class="doccomment">/// Panics if LLVM API returns a `null` pointer or indexed out of bounds.</span>
+ <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">arg</span>(<span class="kw-2">&amp;</span><span class="self">self</span>, <span class="ident">idx</span>: <span class="ident">usize</span>) <span class="op">-</span><span class="op">&gt;</span> <span class="ident">Value</span><span class="op">&lt;</span><span class="lifetime">&#39;llvm</span><span class="op">&gt;</span> {
+ <span class="macro">assert!</span>(<span class="ident">idx</span> <span class="op">&lt;</span> <span class="self">self</span>.<span class="ident">args</span>());
+
+ <span class="kw">let</span> <span class="ident">value_ref</span> <span class="op">=</span> <span class="kw">unsafe</span> { <span class="ident">LLVMGetParam</span>(<span class="self">self</span>.<span class="ident">value_ref</span>(), <span class="ident">idx</span> <span class="kw">as</span> <span class="ident">libc::c_uint</span>) };
+ <span class="ident">Value::new</span>(<span class="ident">value_ref</span>)
+ }
+
+ <span class="doccomment">/// Get the number of Basic Blocks for the given function value.</span>
+ <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">basic_blocks</span>(<span class="kw-2">&amp;</span><span class="self">self</span>) <span class="op">-</span><span class="op">&gt;</span> <span class="ident">usize</span> {
+ <span class="kw">unsafe</span> { <span class="ident">LLVMCountBasicBlocks</span>(<span class="self">self</span>.<span class="ident">value_ref</span>()) <span class="kw">as</span> <span class="ident">usize</span> }
+ }
+
+ <span class="doccomment">/// Verify that the given function is valid.</span>
+ <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">verify</span>(<span class="kw-2">&amp;</span><span class="self">self</span>) <span class="op">-</span><span class="op">&gt;</span> <span class="ident">bool</span> {
+ <span class="kw">unsafe</span> {
+ <span class="ident">LLVMVerifyFunction</span>(
+ <span class="self">self</span>.<span class="ident">value_ref</span>(),
+ <span class="ident">LLVMVerifierFailureAction::LLVMPrintMessageAction</span>,
+ ) <span class="op">=</span><span class="op">=</span> <span class="number">0</span>
+ }
+ }
+}
+</pre></div>
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