20 lines
927 B
Factor
20 lines
927 B
Factor
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USING: help.markup help.syntax math sequences ;
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IN: compiler.cfg.representations.selection
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HELP: costs
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{ $var-description "Maps vreg to representation to cost." } ;
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HELP: increase-cost
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{ $values { "rep" "representation symbol" } { "scc" "?" } { "factor" integer } }
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{ $description "Increase cost of keeping vreg in rep, making a choice of rep less likely. If the rep is not in the cost alist, it means this representation is prohibited." } ;
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HELP: init-costs
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{ $description "Initialize cost as 0 for each possibility." } ;
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HELP: minimize-costs
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{ $values { "costs" sequence } { "representations" sequence } }
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{ $description "For every vreg, compute preferred representation, that minimizes costs." } ;
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HELP: tagged-vregs
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{ $var-description "Vregs which must be tagged at the definition site because there is at least one usage that is not int-rep. If all usages are int-rep it is safe to untag at the definition site." } ;
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