[RFA] convert blocks to dictionaries, phase 1, main part

[Daniel Berlin]

On Tuesday, September 17, 2002, at 03:49  PM, Andrew Cagney wrote:
>>> ndamental data structures and algorithms completly replaced.
>> I think this is just as true of GDB.
>
> Can you expand.  GCC is getting an entirely new tree representation.  
> I don't see GDB getting anything that fundamental.
>
No it isn't.
The IR is being changed, but the changes are not revolution, they are 
evolution, as you put it.

This is not some major data structure change, it involves changing some 
enums and macro names, and changing the functions as appropriate for 
new semantics.

Of course, i'm summarizing a large amount of code (I work on the branch 
in question every day :P) in one sentence, so someone may take issue 
with it.
But in terms of "how deep it goes", this is as fundamental as the 
changes GDB needs in the areas i mentioned.
No more, no less.

It may seem more fundamental to someone who doesn't work on the 
internals of compilers, but trust me, it's not.

--Dan