illegally shared subreg

[Kaveh R. Ghazi]

Geoff/Stuart,

This patch:

 > 2002-10-10  Stuart Hastings  <stuart@apple.com>
 > 
 > 	* cse.c (struct cse_reg_info): Add subreg_ticked.
 > 	(SUBREG_TICKED): New.
 > 	(get_cse_reg_info): Initialize SUBREG_TICKED.
 > 	(mention_regs): Use it.
 > 	(invalidate): Set SUBREG_TICKED.
 > 	(invalidate_for_call): Likewise.
 > 	(addr_affects_sp_p): Likewise.

can't be right.  It causes these new warnings:

 > cse.c:1226: warning: comparison between pointer and integer
 > cse.c:1233: warning: assignment makes integer from pointer without a cast

because you've got an int on one side and an rtx on the other.
(Irix6-cc gets a hard error on these lines instead of a warning.)

		--Kaveh

PS: I wish the regression checker would notice warning regressions to
catch things like this.  I.e. things that don't cause a bootstrap or
testsuite failure, but which are clearly bugs.  We've discussed
strategies for implementing this without too much trouble in the past,
I hope this example will encourage you to see that it's worthwhile. :-)

--
Kaveh R. Ghazi			ghazi@caip.rutgers.edu