From d6f048959a8a747f7b8a2fe830e8589a106f090e Mon Sep 17 00:00:00 2001 From: Preston Briggs Date: Wed, 21 Nov 2012 18:53:19 +0000 Subject: test commit: added a few comments git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168445 91177308-0d34-0410-b5e6-96231b3b80d8 --- include/llvm/Analysis/DependenceAnalysis.h | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'include') diff --git a/include/llvm/Analysis/DependenceAnalysis.h b/include/llvm/Analysis/DependenceAnalysis.h index 39f57208ee..1983c00c57 100644 --- a/include/llvm/Analysis/DependenceAnalysis.h +++ b/include/llvm/Analysis/DependenceAnalysis.h @@ -18,6 +18,16 @@ // of memory references in a function, returning either NULL, for no dependence, // or a more-or-less detailed description of the dependence between them. // +// This pass exists to support the DependenceGraph pass. There are two separate +// passes because there's a useful separation of concerns. A dependence exists +// if two conditions are met: +// +// 1) Two instructions reference the same memory location, and +// 2) There is a flow of control leading from one instruction to the other. +// +// DependenceAnalysis attacks the first condition; DependenceGraph will attack +// the second (it's not yet ready). +// // Please note that this is work in progress and the interface is subject to // change. // -- cgit v1.2.3