<commit_before>===========================================
LLVM Loop Terminology (and Canonical Forms)
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.. contents::
   :local:

Introduction
============

Loops are a core concept in any optimizer.  This page spells out some
of the common terminology used within LLVM code to describe loop
structures.

First, let's start with the basics.  In LLVM, a Loop is a set of basic
blocks that form a strongly connected component (SCC) in the Control
Flow Graph (CFG) where there exists a dedicated entry/header block that<commit_msg>[docs][FIX] Add missing word to documentation in terms of SCCs<commit_after>===========================================
LLVM Loop Terminology (and Canonical Forms)
===========================================

.. contents::
   :local:

Introduction
============

Loops are a core concept in any optimizer.  This page spells out some
of the common terminology used within LLVM code to describe loop
structures.

First, let's start with the basics. In LLVM, a Loop is a maximal set of basic
blocks that form a strongly connected component (SCC) in the Control
Flow Graph (CFG) where there exists a dedicated entry/header block that
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