1 ! Copyright (C) 2008, 2009 Slava Pestov.
2 ! See http://factorcode.org/license.txt for BSD license.
3 USING: kernel accessors namespaces make
7 compiler.cfg.instructions
8 compiler.cfg.linear-scan.numbering
9 compiler.cfg.linear-scan.live-intervals
10 compiler.cfg.linear-scan.allocation
11 compiler.cfg.linear-scan.assignment ;
12 IN: compiler.cfg.linear-scan
16 ! Linear Scan Register Allocation
17 ! by Massimiliano Poletto and Vivek Sarkar
18 ! http://www.cs.ucla.edu/~palsberg/course/cs132/linearscan.pdf
20 ! Linear Scan Register Allocation for the Java HotSpot Client Compiler
22 ! and http://www.ssw.uni-linz.ac.at/Research/Papers/Wimmer04Master/
24 ! Quality and Speed in Linear-scan Register Allocation
25 ! by Omri Traub, Glenn Holloway, Michael D. Smith
26 ! http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.34.8435
28 : (linear-scan) ( rpo -- )
29 dup number-instructions
30 dup compute-live-intervals
31 machine-registers allocate-registers assign-registers ;
33 : linear-scan ( cfg -- cfg' )
35 dup reverse-post-order (linear-scan)
36 spill-counts get >>spill-counts