note BrowserUk <blockquote><i> No, not in the slightest. I think this is the fundamental impedence mismatch between you and me on this subject. </i></blockquote> <p>Having spent the last 9 hours to produce what I posted, having you dismiss it in under 10 minutes -- barely enough time to read the post, never mind look at the code with any attention to detail -- is ... well ... let's just say, disappointing and leave it at that. <blockquote><i> You keep asserting that if LLVM can only be given a full picture of the program, it will be able to do (unspecified) wonderful things with it. </i></blockquote> <p>Firstly, I said <i>may</i>, not "will". It is "(unspecified)" because -- as I've been at pains to state often & clearly -- noone yet knows. I've provided a long list of possibilities, cited documents with examples of them. But I am not a computer and cannot possibly be expected to mentally run hundreds of thousands of lines of Perl sources through a dozen or more optimisation techniques and pick out salient examples to satisfy your demands for the instant gratification of "a concrete example". <p>All I've sought from you, is your knowledge and expertise of and with the existing codebase, to enable the investigations to get a quick, clean start. <blockquote><i> PS I completely fail to understand the the point of your showing how run.c gets converted to IR. run.c just contains a single trivial C function, operating on a few args and variables of particular types, and the IR knows the types of those args. So what? </i></blockquote> <P>The "what" is, that if it can encapsulate and annotate the <i>entire internal (data) structure of Perl</i>, in 100 lines of language independent, platform independent, eminently human readable, metadata, then it can also rewrite those structures and the function trees that use them in ways that neither a C compiler, nor a C programmer -- no matter how experienced -- could ever imagine doing. <div class="pmsig"><div class="pmsig-171588"> <hr /> <font size=1 > <div>With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'</div> <div>Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.</div> <div>"Science is about questioning the status quo. Questioning authority". </div> <div>In the absence of evidence, opinion is indistinguishable from prejudice. <p align=right> [http://thebottomline.cpaaustralia.com.au/|RIP Neil Armstrong]</p></div> </font> </div></div> 990666 991045