18 lines
1.0 KiB
Factor
18 lines
1.0 KiB
Factor
USING: compiler.cfg compiler.cfg.registers cpu.architecture
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help.markup help.syntax ;
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IN: compiler.cfg.representations
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HELP: select-representations
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{ $values { "cfg" cfg } }
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{ $description "Entry point for the representation selection compiler pass. After this word hasn run, the " { $link representations } " hashtable has been filled with vregs and what their preferred representations are." } ;
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ARTICLE: "compiler.cfg.representations" "Virtual register representation selection"
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"Virtual register representation selection. This is where decisions about integer tagging and float and vector boxing are made. The appropriate conversion operations inserted after a cost analysis."
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$nl
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"Good representation selection is very important for Factor because it uses tagged pointers. If the best representations are selected, then the number of conversions between " { $link int-rep } " and " { $link tagged-rep } " is minimized."
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$nl
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"Entry point:"
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{ $subsections select-representations } ;
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ABOUT: "compiler.cfg.representations"
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