This is the mail archive of the gcc@gcc.gnu.org mailing list for the GCC project.


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]
Other format: [Raw text]

Re: ICE in change_address at emit_rtl.c


On Sun, Nov 25, 2001 at 09:23:28AM -0500, Richard Kenner wrote:
> However, my question is what do we gain by removing SAVE_EXPR if we add
> temporaries that have exactly the same semantics?

Being able to optimize at the tree level.  I disbelieve we'll
be able to do that properly given the less than precise
semantics of SAVE_EXPR.

The *only* thing that is good for is holding a temporary during
conversion of *one* expression into rtl.  In any other context
we have to play distinctly ugly games.


r~


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]