[M3devel] optimizer problems

[Tony Hosking]

You should be able to mark it as used.

On 4 Jun 2010, at 12:29, Jay K wrote:

> 
> Just a note that I have found at least two pieces of code that fail to compile with optimization enabled, even in the release branch.
> 
> One is a simple case involving unused nested functions.
> One is a complicated not really understood case.
> 
> 
> To fix these I have pessimized the optimizer in the release branch but turning off two optimizations.
> 
> 
> It would be nice to find a better fix for the first.
> Even something sleazy like having the front end report up front to the backend if there are any nested functions in the unit, and only pessimizing such units.
> There is probably also a fix to gcc around preserving nested functions. I thought code in varasm.c was suspicious but couldn't get it to work quickly.