On Fri, Oct 03, 2014 at 12:36:37PM -0600, Jeff Law wrote:
> rtx_cost and its friends have always been a problem and it's always felt 
> like a design problem.   The true cost of something is so context 
> dependent I'm not really sure how to build an API to do this in a sane way.

In many places it already would help if we had an rtx_insn_cost that
gets a full insn as input.  Maybe an rtx_set_src_cost for the other
cases where "cost of an RTX" makes any sense at all.


Segher

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