Xref: utzoo comp.compilers:1544 comp.software-eng:4492 Path: utzoo!utgpu!watserv1!watmath!att!ima!spdcc!iecc!compilers-sender From: turpin@cs.utexas.edu (Russell Turpin) Newsgroups: comp.compilers,comp.software-eng Subject: Re: Cost/Benefit of compiler optimization techniques? Summary: It depends on the application. Keywords: optimize, design Message-ID: <15198@cs.utexas.edu> Date: 28 Nov 90 21:58:11 GMT References: <9011280511.aa16546@ICS.UCI.EDU> Sender: compilers-sender@iecc.cambridge.ma.us Reply-To: turpin@cs.utexas.edu (Russell Turpin) Organization: U. Texas CS Dept., Austin, Texas Lines: 20 Approved: compilers@iecc.cambridge.ma.us In article <9011280511.aa16546@ICS.UCI.EDU> Ira Baxter writes: > I am interested in finding out the "most useful" optimizations > (at both levels) for conventional procedural languages (FORTRAN, > C, etc.), by comparing average quantitative payoffs which rank > them ... to some measure of the average effort > to implement that optimization ... I think that you will find that such studies are almost always focused on an application area and a particular kind of architecture. For example, I have seen several papers on the effectiveness of various kind of automatic vectorization techniques when applied to fluid flow (or FEA or ...) programs on the Cray. It is not clear what information would be useful unless the application area and target architecture are somehow constrained. Russell -- Send compilers articles to compilers@iecc.cambridge.ma.us or {ima | spdcc | world}!iecc!compilers. Meta-mail to compilers-request.