PATCH:[darwin] fix load of a misaligned double word

[Bradley Lucier]

Alan:

Thank you for your patch.  It bootstrapped and regtested on 
powerpc-apple-darwin7.2.0; I compared it with make check results from a 
few days earlier and found these differences, but I don't know if this 
is just version skew (<: with patch, >: without patch):

> < /Users/lucier/programs/gcc/gcc/objdir/gcc/xgcc version 3.4.0 
> 20040304 (prerelease)
> ---
> > /Users/lucier/programs/gcc/3.4/objdir/gcc/xgcc version 3.4.0 
> 20040301 (prerelease)
> 584a586,588
> > FAIL: final_int execution - gij test
> > FAIL: indirect execution - gij test
> > FAIL: indirect execution - gij test
> 586,588d589
> < FAIL: inner1 execution - gij test
> < FAIL: inner3 execution - gij test
> < FAIL: inner3 execution - gij test
> 591a593,594
> > FAIL: tmi execution - gij test
> > FAIL: update_outer execution - gij test
> 595,596c598,599
> < # of expected passes          3229
> < # of unexpected failures      16
> ---
> > # of expected passes          3225
> > # of unexpected failures      18

I compiled my large project at its usual optimization level (-O1 
-fschedule-insns2 are the main options) and there were no errors that I 
could see.

Brad