41 lines
1.3 KiB
Factor
41 lines
1.3 KiB
Factor
! Copyright (C) 2008, 2010 Slava Pestov.
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! See http://factorcode.org/license.txt for BSD license.
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USING: accessors assocs compiler.cfg.linear-scan.allocation
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compiler.cfg.linear-scan.assignment
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compiler.cfg.linear-scan.live-intervals
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compiler.cfg.linear-scan.numbering
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compiler.cfg.linear-scan.resolve cpu.architecture kernel locals
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sequences ;
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IN: compiler.cfg.linear-scan
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! References:
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! Linear Scan Register Allocation
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! by Massimiliano Poletto and Vivek Sarkar
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! http://www.cs.ucla.edu/~palsberg/course/cs132/linearscan.pdf
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! Linear Scan Register Allocation for the Java HotSpot Client Compiler
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! by Christian Wimmer
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! and http://www.ssw.uni-linz.ac.at/Research/Papers/Wimmer04Master/
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! Quality and Speed in Linear-scan Register Allocation
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! by Omri Traub, Glenn Holloway, Michael D. Smith
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! http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.34.8435
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! SSA liveness must have been computed already
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:: (linear-scan) ( cfg machine-registers -- )
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cfg number-instructions
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cfg compute-live-intervals machine-registers allocate-registers
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cfg assign-registers
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cfg resolve-data-flow
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cfg check-numbering ;
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: admissible-registers ( cfg -- regs )
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machine-registers swap frame-pointer?>> [
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[ [ frame-reg = not ] filter ] assoc-map
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] when ;
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: linear-scan ( cfg -- )
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dup admissible-registers (linear-scan) ;
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