[gambit-list] '-expansion' code doesn't match .c file
Marc Feeley
feeley at iro.umontreal.ca
Thu Nov 17 21:26:41 EST 2011
On 2011-11-17, at 3:02 PM, Bradley Lucier wrote:
> It's OK with me that the compiler removes this code; what I find troubling is that it's still in the "expansion" of the scheme code---it appears that there are optimizations done after the expansion but before code generation.
>
> I'd like to rely on the output of '-expansion' more and to rely on reading the C code (or the resulting assembly code in extreme cases) less in trying to figure out how gsc will compile my code.
>
> Can the '-expansion' be emitted later in the compilation process, after all code-visible optimizations have been made?
These optimizations are done in _front.scm after the source-to-source rewrites in _ptree[12].scm . So there is no moment in time where the AST represents these optimizations. Moving these optimizations to _ptree[12].scm is conceivable but would require a fair amount of refactoring.
Marc
More information about the Gambit-list
mailing list