From 190f4d6e78070ca62b57ad7726dc09d85e4a8f58 Mon Sep 17 00:00:00 2001 From: Sven Verdoolaege Date: Mon, 24 Oct 2011 10:05:06 +0200 Subject: [PATCH] doc: explain direction of dependence relations from the start Reported-by: Yi Zhang Signed-off-by: Sven Verdoolaege --- doc/user.pod | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/doc/user.pod b/doc/user.pod index f282bdab..dd1e47f9 100644 --- a/doc/user.pod +++ b/doc/user.pod @@ -3752,11 +3752,13 @@ for each iteration of the sink access, which iteration of which of the source access relations was the last to access the same data element before the given iteration of the sink access. +The resulting dependence relations map source iterations +to the corresponding sink iterations. To compute standard flow dependences, the sink should be a read, while the sources should be writes. If any of the source accesses are marked as being I -accesses, then there will be a dependence to the last -I access B to any I access that follows +accesses, then there will be a dependence from the last +I access B from any I access that follows this last I access. In particular, if I sources are I accesses, then memory based dependence analysis is performed. -- 2.11.4.GIT