ICE in simplify_plus_minus when called from loop.c

[Richard Henderson]

On Tue, Mar 05, 2002 at 05:22:41PM +0100, Ulrich Weigand wrote:
> Who's at fault?  Should loop not use simplify_gen_binary, or should the
> simplify_plus_minus limitation be lifted?

Hum.  Until I changed things around recently, simplify_plus_minus
had never been called with so many arguments.

I suppose the only question is whether we want to do the sort of
brute-force search that simplify_plus_minus does on arbitrary
numbers of arguments.  If we don't think that number will ever
be REALLY big, then changing simplify_plus_minus would be best.

Otherwise, we change simplify_gen_binary to support failure in
simplify_plus_minus and just call gen_rtx_PLUS.


r~