SIMPLE: A language-independent tree IR

[Diego Novillo]

On Mon, 2002-01-07 at 04:45, Fergus Henderson wrote:
> Just to clarify:
> 
> 	The idea of a language-independent tree IR in which all side-effects
> 	are *_STMT nodes rather than *_EXPR nodes ("SIMPLE trees") sounds fine,
> 	but I don't think language front-ends should use that tree IR;
> 	instead they should generate a different form of tree IR
> 	which allows *_EXPR nodes with side effects ("INITIAL trees")
> 	and then some language-independent pass can convert from
> 	INITIAL trees to SIMPLE trees.
> 
> Is that what you all had in mind?
> 
Absolutely.

Front-ends generate their own trees.  A subsequent pass converts those
into li-trees.  This pass will be very similar to the current tree->rtl
pass.


Diego.