Path: utzoo!mnetor!uunet!husc6!mailrus!umix!umich!mibte!gamma!ulysses!mhuxo!mhuxu!mhuxi!mhuxh!mhuxt!att-ih!att-cb!clyde!rutgers!iuvax!bsu-cs!dhesi
From: dhesi@bsu-cs.UUCP (Rahul Dhesi)
Newsgroups: comp.lang.c
Subject: Re: Pascal --> C question
Message-ID: <2351@bsu-cs.UUCP>
Date: 13 Mar 88 14:45:07 GMT
References: <12340@brl-adm.ARPA>
Reply-To: dhesi@bsu-cs.UUCP (Rahul Dhesi)
Organization: CS Dept, Ball St U, Muncie, Indiana
Lines: 19
Summary: Highly optimizing compilers

In article <12340@brl-adm.ARPA> TLIMONCE%DREW.BITNET@CUNYVM.CUNY.EDU writes:
>Actually, the only version of Pascal that I will use is VaxPascal under
>VMS (what's that?) because it has some [excellent] optimizations....
...
>Why can't popular C compilers do that?

Another interesting optimization done by a VMS compiler, that competing
vendors never thought of doing, is this.  If your C program contains

     fflush(stdout);

the VMS C compiler will optimize this into:

     if (F$MODE == INTERACTIVE)       /* if interactive run */
        fflush(stdout);
     else
        printf("\n");                 /* if batch run */
-- 
Rahul Dhesi         UUCP:  <backbones>!{iuvax,pur-ee,uunet}!bsu-cs!dhesi