From: Matt Wette <matt.wette@gmail.com>
To: guile-devel@gnu.org
Subject: flow-analysis and Offner's notes
Date: Fri, 8 Jun 2018 17:17:55 -0700 [thread overview]
Message-ID: <8755be82-8386-f778-1c24-5e2a1db5b717@gmail.com> (raw)
Hi All,
Andy Windo's blog on flow-analysis in Guile references Offner's "Notes on Graph
Algorithms Used in Optimizing Compilers"? Anyone read this manuscript? Lemma
2.2 says, in a flow-graph, if x>>z and y>>z, then either x>>y or y>>x. The proof
uses the argument that the path from s, the start, to z has to include both x and y.
I'm not seeing that. Consider a graph s->x, s->y, x->z and y->z. What am I missing?
(another example, in figure 2.1 C>>K and B>>K but C and B are not ordered.)
Ref: http://www.cs.umb.edu/~offner/files/flow_graph.pdf
Matt
next reply other threads:[~2018-06-09 0:17 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-06-09 0:17 Matt Wette [this message]
2018-06-09 13:34 ` flow-analysis and Offner's notes Matt Wette
2018-06-09 15:20 ` Matt Wette
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
List information: https://www.gnu.org/software/guile/
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=8755be82-8386-f778-1c24-5e2a1db5b717@gmail.com \
--to=matt.wette@gmail.com \
--cc=guile-devel@gnu.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).