Martin Wiebusch wrote:
Hi,
I'm having trouble compiling generated code, which results in very
large function bodies. The structure of the function is quite simple;
just a long list of variable = expression assignments, where each
expression is at most 30 lines or so. The entire sourcefile can be up
to 10MB. (Yes, it's a beast of a calculation.) Even without
optimization, gcc uses all my 2Gig of memory and eventually quits with
a "cc1plus: out of memory" message.
I have had limited success with splitting up the code into several
smaller functions. What puzzles me is that, if I put all functions
into the same source file, gcc still uses much more memory than when I
put them in separate files (and eventually dies for the 10MB source).
Basically, I'm wondering whether there is a way to tell gcc to just
compile (and maybe even optimize?) one assignment at a time and not
try to keep the entire function in memory (assuming that that's what
it does now).
Try -fno-unit-at-a-time ?
Alternatively, just put the different functions in different files (e.g.
func1.c, func2.c, func3.c, etc), and generate your makefile
automatically so you don't need to keep track of the names.
Tom
