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

[Andrew Cagney]

> 
> 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.

Well that excludes me.

Andrew