14 Aug
2024
14 Aug
'24
3:11 a.m.
... of course it is serialized, there has to be some convention on
writing a tree out in some order to a file ... well anyway I'm sure they
can tell you what that product is and does.
On 08/13/2024 02:08 PM, Luther Johnson wrote:
I don't know if you've seen this, but:
https://www.edg.com/
Edison Design Group has produced many compiler front ends, this part
of a compiler scans and parse the input language, and emits an
intermediate representation, the first representations in the chain of
compiler phases are usually a parse tree, then a cleaned-up version of
the parse tree that has removed all sorts of contingent data, tied to
the the original program, but not necessary for further processing -
this is usually called the 'abstract syntax tree'. I've never used EDG
products in my work, but I have talked with them a couple of times. I
imagine if you have an EDG front end, in addition to that output you
describe, it probably is meant to write some (possibly serialized)
version of an abstract syntax tree to some file somewhere (perhaps
with the right options on invocation).
You could call them and ask them, they seemed very friendly and
helpful a couple of years ago when I talked to them.
On 08/13/2024 12:41 PM, Henry Bent wrote:
Hi all,
I was working with my IRIX 4 machine recently and noticed a
mysterious file - /usr/lib/ecfe. It turns out that this is the
Edison Design Group C (not C++) Front End, included almost certainly
by accident with the last release of the Developer Toolkit for IRIX
4. No other piece of the compiler toolchain references the EDG
product in any way and there is no documentation for it whatsoever.
The research that I did seems to indicate that this is a source to
source translator, akin to the contemporary Kuck & Associates product
- is that correct? I also found a reference to EDG's tool being used
in the Apogee C compiler. I have a copy of Apogee C for SunOS and it
does appear that "cfe" is the same EDG product. Unfortunately there
is no documentation specific to the C front end, and I don't have a
license for Apogee C so I can't run the compiler to see how it's
calling cfe. Just running a C file "blah.c" through the IRIX front
end with no switches results in a transformed file "blah.int.c".
Unfortunately running anything even moderately complex through the
front end results in code that either doesn't compile or doesn't run,
so I feel that I must be missing some flags or basic options.
Does anyone have any information about SGI's use of this software, or
any documentation/information in general about the EDG product? My
usual sources came up empty.
-Henry