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Add a comment describing natural loops.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82859 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman 2009-09-26 15:09:53 +00:00
parent c8e9314a41
commit b7532e2548
1 changed files with 2 additions and 1 deletions
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include/llvm/Analysis/LoopInfo.h
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@ -8,7 +8,8 @@
//===----------------------------------------------------------------------===// //===----------------------------------------------------------------------===//
// //
// This file defines the LoopInfo class that is used to identify natural loops // This file defines the LoopInfo class that is used to identify natural loops
// and determine the loop depth of various nodes of the CFG. Note that natural // and determine the loop depth of various nodes of the CFG. A natural loop
// has exactly one entry-point, which is called the header. Note that natural
// loops may actually be several loops that share the same header node. // loops may actually be several loops that share the same header node.
// //
// This analysis calculates the nesting structure of loops in a function. For // This analysis calculates the nesting structure of loops in a function. For