Re: [lto]: PATCH: Add output of functions.

[Mark Mitchell <mark at codesourcery dot com>]

Kenneth Zadeck wrote:
> This patch is the first cut at writing the gimple function bodies into
> the asm file.  This is a rewrite of my last patch with all of the dwarf3
> removed and many issues addressed.  This is now writing to the assembly
> file and a lot more of it is table driven, which will also be used on
> the reading side. 

Exciting.

> The interface with CodeSourcery's symbol table code to get references to
> the global types and decls is there but is ifdef'ed out with the
> preprocessor symbol GIMPLE_SYMBOL_TABLE_WORKS.

> Right now the symbol table code has little behind it except calls to abort.

Well, types (are supposed to) work -- so you might as well turn that bit 
on. :-)  And, since CONST_DECLs have no semantics, I don't expect that 
we'll ever provide an API for writing them out, so you can drop that bit 
too.  I think that it's great that you're trying to make sure you can 
push lots of input code through your code, but it's going to be a while 
before we can get all of that working on both sides, so I think you'll 
need to work with toy programs at first.

> One piece of the api that has slipped through the cracks is what am I to
> name the sections that the output is in. 

I suggest ".lto_$name", where $name is the function's 
DECL_ASSEMBLER_NAME.  We should also select an ELF section type number 
from the reserved portion of the number space, but that's a detail we 
can postpone.

If you agree, Sandra and I will wire up enough bits to read a 
FUNCTION_DECL, call the reader, using the API previously agreed, and 
generate code within a few days.  Theoretically, that should allow us to 
round-trip small programs.

--
Mark Mitchell
CodeSourcery
mark@codesourcery.com
(650) 331-3385 x713