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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="API documentation for the Rust `flowgraph` mod in crate `cranelift_codegen`."><meta name="keywords" content="rust, rustlang, rust-lang, flowgraph"><title>cranelift_codegen::flowgraph - Rust</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="../../dark.css"><link rel="stylesheet" type="text/css" href="../../light.css" id="themeStyle"><script src="../../storage.js"></script><noscript><link rel="stylesheet" href="../../noscript.css"></noscript><link rel="shortcut icon" href="../../favicon.ico"><style type="text/css">#crate-search{background-image:url("../../down-arrow.svg");}</style></head><body class="rustdoc mod"><!--[if lte IE 8]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><div class="sidebar-menu">☰</div><a href='../../cranelift_codegen/index.html'><div class='logo-container'><img src='../../rust-logo.png' alt='logo'></div></a><p class='location'>Module flowgraph</p><div class="sidebar-elems"><div class="block items"><ul><li><a href="#structs">Structs</a></li><li><a href="#types">Type Definitions</a></li></ul></div><p class='location'><a href='../index.html'>cranelift_codegen</a></p><script>window.sidebarCurrent = {name: 'flowgraph', ty: 'mod', relpath: '../'};</script><script defer src="../sidebar-items.js"></script></div></nav><div class="theme-picker"><button id="theme-picker" aria-label="Pick another theme!"><img src="../../brush.svg" width="18" alt="Pick another theme!"></button><div id="theme-choices"></div></div><script src="../../theme.js"></script><nav class="sub"><form class="search-form js-only"><div class="search-container"><div><select id="crate-search"><option value="All crates">All crates</option></select><input class="search-input" name="search" autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"></div><a id="settings-menu" href="../../settings.html"><img src="../../wheel.svg" width="18" alt="Change settings"></a></div></form></nav><section id="main" class="content"><h1 class='fqn'><span class='out-of-band'><span id='render-detail'><a id="toggle-all-docs" href="javascript:void(0)" title="collapse all docs">[<span class='inner'>−</span>]</a></span><a class='srclink' href='../../src/cranelift_codegen/flowgraph.rs.html#1-350' title='goto source code'>[src]</a></span><span class='in-band'>Module <a href='../index.html'>cranelift_codegen</a>::<wbr><a class="mod" href=''>flowgraph</a></span></h1><div class='docblock'><p>A control flow graph represented as mappings of extended basic blocks to their predecessors
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and successors.</p>
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<p>Successors are represented as extended basic blocks while predecessors are represented by basic
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blocks. Basic blocks are denoted by tuples of EBB and branch/jump instructions. Each
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predecessor tuple corresponds to the end of a basic block.</p>
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<pre><code class="language-c"> Ebb0:
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... ; beginning of basic block
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...
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brz vx, Ebb1 ; end of basic block
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... ; beginning of basic block
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...
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jmp Ebb2 ; end of basic block
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</code></pre>
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<p>Here <code>Ebb1</code> and <code>Ebb2</code> would each have a single predecessor denoted as <code>(Ebb0, brz)</code>
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and <code>(Ebb0, jmp Ebb2)</code> respectively.</p>
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</div><h2 id='structs' class='section-header'><a href="#structs">Structs</a></h2>
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<table><tr class='module-item'><td><a class="struct" href="struct.BasicBlock.html" title='cranelift_codegen::flowgraph::BasicBlock struct'>BasicBlock</a></td><td class='docblock-short'><p>A basic block denoted by its enclosing Ebb and last instruction.</p>
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</td></tr><tr class='module-item'><td><a class="struct" href="struct.ControlFlowGraph.html" title='cranelift_codegen::flowgraph::ControlFlowGraph struct'>ControlFlowGraph</a></td><td class='docblock-short'><p>The Control Flow Graph maintains a mapping of ebbs to their predecessors
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and successors where predecessors are basic blocks and successors are
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extended basic blocks.</p>
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</td></tr><tr class='module-item'><td><a class="struct" href="struct.PredIter.html" title='cranelift_codegen::flowgraph::PredIter struct'>PredIter</a></td><td class='docblock-short'><p>An iterator over EBB predecessors. The iterator type is <code>BasicBlock</code>.</p>
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</td></tr></table><h2 id='types' class='section-header'><a href="#types">Type Definitions</a></h2>
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<table><tr class='module-item'><td><a class="type" href="type.SuccIter.html" title='cranelift_codegen::flowgraph::SuccIter type'>SuccIter</a></td><td class='docblock-short'><p>An iterator over EBB successors. The iterator type is <code>Ebb</code>.</p>
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