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Re: RFC: Multiple Java Source Files - Combine Inputs By Default


Ranjit Mathew writes:
While "gcc" doesn't let me specify "-o" with "-S" or "-c" if
multiple input files are present, "gcj" does. And "gcj" creates
something that is neither of "foo.o" or "bar.o".  I'm guessing that
this file then is an object file containing code from *both*
"foo.java" and "bar.java".

To quote Andrew Haley:


Exactly: they're compiled together, allowing us to do inlining,
interprocedural optimization, etc.

Ranjit Mathew writes:
What happens is that java_parse_file() in jcf-parse.c
first iterates through all source files calling parse_source_file_1()
on them. It then calls parse_source_file_2() on each file
and finally parse_source_file_3() on each file (separate loops).

On the other hand, read_class() in jcf-parse calls
parse_source_file_1/2/3() when it reads a source file.

I don't know if this is correct. I believe read_class would be called in pass 2 (i.e. during parse_source_file_2). If so, it probably shouldn't be doing parse_source_file_3. However, it's been so long and I don't even remember why parse_source_file_3 is a separate pass. -- --Per Bothner per@bothner.com http://per.bothner.com/


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