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Re: Improve VRP, remove DOM nonzero property tracking


Steven Bosscher wrote:
On Friday 17 February 2006 05:14, Jeffrey A Law wrote:
Here's the next installment in ripping out those bits in DOM which
are implemented better elsewhere in the compiler.

Yay, very nice. Bonus: I think your patch makes PHI_ARG_NONZERO unused...?

Very nice indeed, but I don't like the ping-pong of function calls between VRP and fold. Can't we have a function in tree-vrp that does


if (TREE_CODE (t) == SSA_NAME)
  blah-blah-query-the-ranges
else
  return tree_expr_nonzero_p (t);

instead?

Paolo


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