Re: [RFT/RFA] Fix AIX fallout from PR/19653 patch

[Dale Johannesen <dalej at apple dot com>]

On Apr 5, 2006, at 8:38 PM, David Edelsohn wrote:

> 	Paolo's patch, this suggestion, and limiting the SYMBOL_REF test
> to just legitimize_reload_address all work.  However, GCC now produces
> worse code with many more memory accesses for FP constants on PowerPC.
>
> 	Was the performance impact of the original patch ever tested on
> anything other than x86?  Reload changes can have significant  
> performance
> impact on all GCC architectures and this patch should have been tested
> much more extensively.

This has been in Apple's branch for months, and is neutral or  
beneficial on Darwin PPC (SPEC and a lot of in-house code).
We aren't seeing the same kind of problems you are on AIX.  I'll see  
if I can get an AIX cross compiler built (don't have an AIX machine  
though)....