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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`."><title>mod.rs - source</title><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../static.files/SourceSerif4-Regular-46f98efaafac5295.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../static.files/FiraSans-Regular-018c141bf0843ffd.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../static.files/FiraSans-Medium-8f9a781e4970d388.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../static.files/SourceCodePro-Regular-562dcc5011b6de7d.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../static.files/SourceCodePro-Semibold-d899c5a5c4aeb14a.ttf.woff2"><link rel="stylesheet" href="../../../static.files/normalize-76eba96aa4d2e634.css"><link rel="stylesheet" href="../../../static.files/rustdoc-17e279919966e8e4.css"><meta name="rustdoc-vars" data-root-path="../../../" data-static-root-path="../../../static.files/" data-current-crate="llvm_kaleidoscope_rs" data-themes="" data-resource-suffix="" data-rustdoc-version="1.75.0 (82e1608df 2023-12-21) (built from a source tarball)" data-channel="1.75.0" data-search-js="search-8fbf244ebcf71464.js" data-settings-js="settings-74424d7eec62a23e.js" ><script src="../../../static.files/storage-fec3eaa3851e447d.js"></script><script defer src="../../../static.files/src-script-3280b574d94e47b4.js"></script><script defer src="../../../src-files.js"></script><script defer src="../../../static.files/main-9dd44ab47b99a0fb.js"></script><noscript><link rel="stylesheet" href="../../../static.files/noscript-5d8b3c7633ad77ba.css"></noscript><link rel="alternate icon" type="image/png" href="../../../static.files/favicon-16x16-8b506e7a72182f1c.png"><link rel="alternate icon" type="image/png" href="../../../static.files/favicon-32x32-422f7d1d52889060.png"><link rel="icon" type="image/svg+xml" href="../../../static.files/favicon-2c020d218678b618.svg"></head><body class="rustdoc src"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"></nav><main><nav class="sub"><form class="search-form"><span></span><input class="search-input" name="search" aria-label="Run search in the documentation" autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"><div id="help-button" title="help" tabindex="-1"><a href="../../../help.html">?</a></div><div id="settings-menu" tabindex="-1"><a href="../../../settings.html" title="settings"><img width="22" height="22" alt="Change settings" src="../../../static.files/wheel-7b819b6101059cd0.svg"></a></div></form></nav><section id="main-content" class="content"><div class="example-wrap"><div data-nosnippet><pre class="src-line-numbers"><a href="#1" id="1">1</a>
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</pre></div><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></section></main></body></html>
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