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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/mod.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>mod.rs - source</title><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../SourceSerif4-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../FiraSans-Regular.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../FiraSans-Medium.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../SourceCodePro-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../SourceSerif4-Bold.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../SourceCodePro-Semibold.ttf.woff2"><link rel="stylesheet" href="../../../normalize.css"><link rel="stylesheet" href="../../../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" href="../../../ayu.css" disabled><link rel="stylesheet" href="../../../dark.css" disabled><link rel="stylesheet" href="../../../light.css" id="themeStyle"><script id="default-settings" ></script><script src="../../../storage.js"></script><script defer src="../../../source-script.js"></script><script defer src="../../../source-files.js"></script><script defer src="../../../main.js"></script><noscript><link rel="stylesheet" href="../../../noscript.css"></noscript><link rel="alternate icon" type="image/png" href="../../../favicon-16x16.png"><link rel="alternate icon" type="image/png" href="../../../favicon-32x32.png"><link rel="icon" type="image/svg+xml" href="../../../favicon.svg"></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="mobile-topbar"><button class="sidebar-menu-toggle">☰</button><a class="sidebar-logo" href="../../../llvm_kaleidoscope_rs/index.html"><div class="logo-container"><img class="rust-logo" src="../../../rust-logo.svg" alt="logo"></div></a><h2 class="location"></h2></nav><nav class="sidebar"><a class="sidebar-logo" href="../../../llvm_kaleidoscope_rs/index.html"><div class="logo-container"><img class="rust-logo" src="../../../rust-logo.svg" alt="logo"></div></a></nav><main><div class="width-limiter"><div class="sub-container"><a class="sub-logo-container" href="../../../llvm_kaleidoscope_rs/index.html"><img class="rust-logo" src="../../../rust-logo.svg" alt="logo"></a><nav class="sub"><form class="search-form"><div class="search-container"><span></span><input class="search-input" name="search" autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"><div id="help-button" title="help" tabindex="-1"><button type="button">?</button></div><div id="settings-menu" tabindex="-1"><a href="../../../settings.html" title="settings"><img width="22" height="22" alt="Change settings" src="../../../wheel.svg"></a></div></div></form></nav></div><section id="main-content" class="content"><div class="example-wrap"><pre class="line-numbers"><span id="1">1</span>
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</pre><pre class="rust"><code><span class="doccomment">//! Safe wrapper around the LLVM C API.
//!
//! References returned from the LLVM API are tied to the `'llvm` lifetime which is bound to the
//! context where the objects are created in.
//! We do not offer wrappers to remove or delete any objects in the context and therefore all the
//! references will be valid for the liftime of the context.
//!
//! For the scope of this tutorial we mainly use assertions to validate the results from the LLVM
//! API calls.
</span><span class="kw">use </span>llvm_sys::{
core::LLVMShutdown,
error::{LLVMDisposeErrorMessage, LLVMErrorRef, LLVMGetErrorMessage},
target::{
LLVM_InitializeNativeAsmParser, LLVM_InitializeNativeAsmPrinter,
LLVM_InitializeNativeTarget,
},
};
<span class="kw">use </span>std::ffi::CStr;
<span class="kw">mod </span>basic_block;
<span class="kw">mod </span>builder;
<span class="kw">mod </span>lljit;
<span class="kw">mod </span>module;
<span class="kw">mod </span>pass_manager;
<span class="kw">mod </span>type_;
<span class="kw">mod </span>value;
<span class="kw">pub use </span>basic_block::BasicBlock;
<span class="kw">pub use </span>builder::IRBuilder;
<span class="kw">pub use </span>lljit::{LLJit, ResourceTracker};
<span class="kw">pub use </span>module::Module;
<span class="kw">pub use </span>pass_manager::FunctionPassManager;
<span class="kw">pub use </span>type_::Type;
<span class="kw">pub use </span>value::{FnValue, PhiValue, Value};
<span class="kw">struct </span>Error<<span class="lifetime">'llvm</span>>(<span class="kw-2">&</span><span class="lifetime">'llvm </span><span class="kw-2">mut </span>libc::c_char);
<span class="kw">impl</span><<span class="lifetime">'llvm</span>> Error<<span class="lifetime">'llvm</span>> {
<span class="kw">fn </span>from(err: LLVMErrorRef) -> <span class="prelude-ty">Option</span><Error<<span class="lifetime">'llvm</span>>> {
(!err.is_null()).then(|| Error(<span class="kw">unsafe </span>{ <span class="kw-2">&mut *</span>LLVMGetErrorMessage(err) }))
}
<span class="kw">fn </span>as_str(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="kw-2">&</span>str {
<span class="kw">unsafe </span>{ CStr::from_ptr(<span class="self">self</span>.<span class="number">0</span>) }
.to_str()
.expect(<span class="string">"Expected valid UTF8 string from LLVM API"</span>)
}
}
<span class="kw">impl </span>Drop <span class="kw">for </span>Error<<span class="lifetime">'_</span>> {
<span class="kw">fn </span>drop(<span class="kw-2">&mut </span><span class="self">self</span>) {
<span class="kw">unsafe </span>{
LLVMDisposeErrorMessage(<span class="self">self</span>.<span class="number">0 </span><span class="kw">as </span><span class="kw-2">*mut </span>libc::c_char);
}
}
}
<span class="doccomment">/// Initialize native target for corresponding to host (useful for jitting).
</span><span class="kw">pub fn </span>initialize_native_taget() {
<span class="kw">unsafe </span>{
<span class="macro">assert_eq!</span>(LLVM_InitializeNativeTarget(), <span class="number">0</span>);
<span class="macro">assert_eq!</span>(LLVM_InitializeNativeAsmParser(), <span class="number">0</span>);
<span class="macro">assert_eq!</span>(LLVM_InitializeNativeAsmPrinter(), <span class="number">0</span>);
}
}
<span class="doccomment">/// Deallocate and destroy all "ManagedStatic" variables.
</span><span class="kw">pub fn </span>shutdown() {
<span class="kw">unsafe </span>{
LLVMShutdown();
};
}
</code></pre></div>
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